SY/T 5587.19-1994 Procedure for salvaging pipes and other objects in routine well repair work for oil and water wells
Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/ T 5587.1994
Routine well repair and restoration work for oil and water wells
Technical procedures for salvaging pipes
1995-01-18 Issued
China National Petroleum Corporation
1995-07-01 Implementation
Subject content and scope of application
Petroleum and Natural Gas Industry Standard of the People's Republic of China Routine well repair and restoration work for oil and water wells
Technical procedures for salvaging pipes
SY/ T 5587.19- 94
This standard specifies the requirements for the preparation, safety and quality control of the operation procedures and quality inspection for salvaging pipes (oil pipes, drill pipes and various downhole tools that have fallen into the well). This standard applies to the conventional salvage of pipes that have fallen into oil, gas and water casings, and can be used as a reference for salvaging pipes that have fallen into open holes. 2 Reference standards
SY/T5587.3 Procedure for pressure and replacement spraying in routine well repair for oil and water wellsSY/T5587.5 Procedure for oil and water well routine well repair for oil and water wells, sand surface exploration and sand flushingSY/T5587.6 Procedure for pulling and lowering tubing in routine well repair for oil and water wellsSY/T5587.9 Procedure for replacing wellhead equipment in routine well repair for oil and water wellsSY/T5587.16 Procedure for clearing well and scraping casing in routine well repair for oil and water wells 3 Operation preparation
3.1 Design preparation
The design preparation shall comply with the provisions of Appendix A (supplement): 3.2 Equipment preparation
Install and debug the repair equipment and related instruments and instrument attenuation whose load meets the design requirements. 3.3 Tool preparation
The tools for conventionally salvaging pipes are shown in Table 1 (the preparation should be based on the fish top conditions obtained by the impression or other methods). Table 1
Tool name
Slider slip salvage tool
Retractable spear
Inverted salvage spear
Tubing coupling salvage spear
Hydraulic salvage spear
Retractable slip salvage sleeve
Inverted salvage sleeve
Window salvage tube
Color top band joint or connector
Stuck objects
Objects that need to be inverted after casing milling
Downhole objects that may be stuck
Occurrence Stuck objects or partially dropped objects milled out by casing. The tubing coupling is intact and the lower objects are not stuck.
The inner diameter of the dropped objects is larger and the lower objects are not stuck. The fish top is the tubing, drill pipe body and other tools.
The outer diameter of the fish neck is basically intact and there may be a total of stuck objects. The outer diameter of the fish top is basically intact and some of the dropped objects can be poured out. The outer diameter of the negative top is basically intact and has a coupling or a joint shoulder. No stuck objects. China National Petroleum Corporation. Approved on January 18, 1995. Implemented on July 1, 1995.
Tool name
Open down hammer
Hydraulic up hammer
Casing, milling tools
SY/ T 5587.1994
Continued Table 1
Used when the jamming cannot be solved by moving, pressing and other methods. The jammed objects can be repeatedly shocked to loosen the jamming point and release the jam. It is used to deal with deep well sand jams, sealer jams and small objects, especially when the rack load is small and the jamming cannot be implemented. Use it to inspect the deformation and damage degree of the inner diameter of the casing: depth and depth of the objects, fish top conditions, etc. Preliminary processing tools before salvaging the objects or homemade special salvage tools when they cannot be salvaged. They must be safe and reliable, that is, they can be salvaged when advancing and released when retreating. The casing will not be damaged during the salvage process. It will not cause the drill to get stuck. 3.3.2 Newly purchased tools must be inspected: the instructions and certificates should be complete. 4 Operation procedures
4.1 Pressing and merging. The pressing and merging operation should comply with the provisions of SY/T5587.3. 4.2 Changing the wellhead. The wellhead changing operation should comply with the provisions of SY/T5587.9. 4.3 Lifting out the original downhole pipe string. The lifting and lowering operation shall comply with the provisions of SY/T5587.6. 4.4 Verify the fish top situation (depth, shape, etc.). 4.5 Select tools and check whether they are qualified.
4.6 Lower the connecting tool to the location of the fallen object,
4.7 Perform the salvage operation. The operation method is shown in Appendix C (reference). 4.8 Lift out the tool: Check the salvage situation and formulate the next step until all the fallen objects are recovered. 4.9 Clear the well, flush the sand, and replace the spray (self-flowing well or gas well) in accordance with the provisions of SYT5587.16, SY/T5587.5 and SY/T5587.3.
4.10 Completion shall be carried out according to the requirements of the geological plan. 5 Safety and quality control
5.1 Verify the fish top
5.1.1 The mold should be carefully checked before it is lowered to ensure its quality. 5.1.2 The hanging weight should not drop more than 10-20kN during printing, and it should not be hit twice. 5.1.3 The fish top situation obtained by other methods should be true and accurate. 5.1.4Www.bzxZ.net
When there is a problem with the casing above the fish top, the casing should be repaired first and then salvaged, so that the tool can smoothly go down to the color top position and can work normally. When the fish top is damaged, the fish top should be repaired first to make it ready for salvage. 5.1.5
5.1.6 Sand is produced in the oil layer above the fish top. The settled sand should be flushed away. If the sand is serious, anti-sand measures should be taken before salvaging. 5.2 Tool selection
Select and check whether the tools are qualified: draw a schematic diagram: and indicate the dimensions of each part, buckle type, etc. before going down and conducting ground tests to ensure that the movable parts are flexible and reliable and can successfully complete the salvage operation. 5.2.2
The maximum outer diameter should be 6mm less than the inner diameter of the casing
5.2.4 When the inner diameter of the casing is large, in order to prevent the tool from being inserted into the fish (such as male cones, fishing spears), a simple guide shoe should be brought. 5.2.5 After each salvage work: Check whether the tools are intact and record them in detail. If the tools are damaged, analyze the reasons, study measures and replace the tools.
5.3 Drilling tool assembly
5.3.1 According to the well depth, casing specifications, and salvage nature (whether to make a buckle or not), select the drill pipe or tubing of appropriate specifications and buckle type: 2
SY/T5587.19-94
5.3.2 The drilling tool assembly should reduce transition joints, and the strength of the matching joints should not be lower than that of the drill pipe or tubing. 5.3.3 The threads of the drilling tools downhole should be intact and the flaw detection should meet the standard requirements. 5.3.4 Connect the drilling tools according to the design requirements, calculate the fish-touching square and the salvage square, and make obvious marks on the square drill pipe or the last pipe string. When using drilling and repair equipment, it is recommended to use the following drilling tool assembly (from bottom to top); salvage tool → safety joint → open down-hammer (or hydraulic up-hammer) - accelerator → drill chain → drill pipe. A safety joint should be connected to any salvage pipe string tool on the square drill pipe. Other equipment used shall meet the requirements of salvage. 5.4 Salvage
5.4.1 Before the second salvage, there shall be impression data to select appropriate salvage tools. 5.4.2 During each salvage process, there shall be corresponding safety measures to avoid damage to the top of the position and prevent accidents from recurring. 5.4.3 When the pipe string is stuck and needs to be reversed, the position of the stuck point shall be measured and the reverse load shall be determined according to the depth of the stuck point. 5.4.4 If it is necessary to hit the pipe string to release the jam, when hitting it down, the stroke of lifting the pipe string shall not exceed 1.5m1, and the lowering speed shall be based on the principle that the working wire rope does not jump the groove and the elevator does not hit the port, and the speed shall be fast. When striking upward, the lifting load and stroke are determined based on the shock force after hydraulic shock debugging. After the shock occurs, stop for 2 to 3 minutes and lower the drilling tool: repeat the lifting shock. 5.4.5 When fishing in deep wells and ultra-deep wells, each connection part should be tightened according to the standard regulations, and the drilling pressure should be reasonably controlled according to the tool operation method. 5.4.6 When fishing in gas wells, the tools (pipe clamps, etc.) used at the wellhead should be copper products to avoid fire caused by collision with iron tools. For fishing in open holes, the well diameter curve should be used as a reference. 5.4.7
When inverted, the turntable core is firmly fixed to prevent injury from being pulled out. 5.4.8
Manual inverted is prohibited
When drilling after the fallen objects are fished out: the turntable unloading buckle is not allowed. 5.4.10
5.4.11 The lifting card pin should be tied with a safety rope. The operation of drilling should be smooth, preventing the head, stopping, and falling, and not lifting and releasing violently. 5.5 Others
5.5.1 The number and distance of the working wire rope and the tension rope of the rack and the rope clips meet the requirements: 5.5.2 The weight indicator is installed firmly and is easy to observe, and the indication is sensitive and accurate. 5.5.3 During the process of drilling, the wellhead should be observed at any time. If overflow occurs and gradually increases, anti-blowout measures should be taken. After drilling, the wellhead should be properly seated.
5.5.4 For wells with self-spraying ability, the pressure fluid should be adjusted and injected at any time to prevent blowout. 6 Data collection
6.1 Name, specification, length, salvage depth of salvage tools, circulation flushing conditions, salvage conditions of buckles and inverted buckles, name, specification, length, quantity of salvaged objects, phenomena occurring during the salvage process, etc. The downhole tools should be drawn with a structural diagram, and the printing should have an imprint depicting the diagram 6.2. If there are still fallen objects in the well, there should be a schematic diagram, and the size, specification, length, color top depth, shape, material and connection relationship of each part of the fallen object should be noted.
6.3 Other materials should be collected according to the design and relevant regulations. 7 Quality Inspection
7.1 Salvage operation should meet the design requirements.
7.2 Do not damage the casing. Do not pollute the oil layer and do not add new debris. 7.3 Each process is completed in accordance with the design or specified requirements. 8 Summary
Write a summary within 5 days after construction: its content should comply with the provisions of Appendix B (Supplement) 3
A1 Construction design document format
SY/ T 5587.19-94
Appendix A
Design document format for salvaging pipe debris
(Supplement)
The format of the construction design document is 190min×265mmA2 Construction design document cover format
The cover format of the construction design document is as follows.
Construction team
Designer
Reviewer
Approver
Well salvaging pipe and other fallen objects construction design book
A3 construction design book content format
1. Basic data
Completion depth, m
Artificial bottom of well before month, m
Current reservoir pressure, MPa
Cement return depth, m
Reservoir location
Water content, %
Liquid production, m/d
Oil pressure, MPa
Sand production
Specification, mm
Description of falling objects in the well
SY/ T 5587.1994
Completion method
Oil compensation distance, m
Casing compensation distance, m
Inner diameter, mm
Concrete quality
Wall thickness, mm
Casing integrity
Gas-oil ratio, m/t
Oil production, t/ d
Casing pressure, MPa
(shape, size, material, depth, connection relationship, source of falling objects, etc.)
Wellbore structure diagram
Entry depth, m
II. Process technology design
1. Process technology optimization selection
SY/ T 5587.19-94
2. Construction parameter design and main technical requirements3. Raw material requirements
4. Downhole tool selection
5. Process construction string design
6. Production string design
7. Precautions
III. Construction design
1. Preparation before construction
2. Process design
3. Implementation points
4. Cost budget
5.Safety precautions and measures
6.Review opinions
7.Approval opinions
SY/ T 5587.19--94
Construction summary format
SY/ T 5587.19-94
Appendix B
Summary format of salvaging fallen objects from egrets
(Supplement)
The format of the construction summary is 190mm×265mmConstruction summary cover format
The cover format of the construction summary is as follows.
Construction team
Designer
Auditor
Approver
Construction summary of falling objects such as well drilling and pulling pipes
Construction summary content format
Construction implementation overview
SY/ T 5587.1994
Construction content and main data
SY/ T 5587.19- -94
2. Operation effect analysis (experience, lessons) 3. Operation time analysis
4. Problems found during construction and analysis of causes 5. Schematic diagram of completion string
6. Record of parameter changes
7. Single well cost accounting
8. Audit opinion
Tool name
Male and female cone
Slider slip fishing spear
Retractable fishing spear
Inverted fishing spear fishing shovel
Tubing coupling spear
Hydraulic fishing spear
Retractable slip row shovel
Window fishing shovel
Sleeve milling and grinding
SY/ T 5587.19-94
Appendix C
Operation method of conventional fishing tools
(reference)
Slowly probe down to the fishing side, confirm that the button making side is reached, add drilling pressure of 20-30kN. Make a button at a speed of 1020r/min, make a button 5-1U circle and lift it up. If the hanging weight increases, then pull out the drill. If the hanging weight does not increase: repeat the above operation. After the drill is made, if it is stuck and the measures such as movement, adjustment, rotation, etc. still cannot be unblocked, then lift the drill to the designed inverted load for inverting. If the hanging weight gradually drops to the original hanging weight or slightly larger and the torque decreases, it proves that it has been fished up or reversed. After slowly lifting it to the normal load, the drill is normally pulled up. When it is 1 to 1.5m away from the fish neck, remember to feel the weight and slowly lower it. If there is resistance when touching the fish, rotate the drill at different angles. After the tool enters the fish cavity, slowly lift it up and grab the fallen objects. If the weight increases, fish out the drill. If it is stuck and the measures such as movement still cannot be unblocked, you can take inverted measures. The inverted method is the same as above, flushing, rotating and releasing: when the hanging weight shows a decrease, rotate the drill counterclockwise! ~2 circles (you can turn more circles depending on the specific situation), slowly lift the drill bit: if the hanging weight increases, pull out the drill. If you need to withdraw the tool: strike down with the drill bit, rotate the drill bit 23 clockwise, and slowly lift it up at the same time: you can withdraw
The tool is down to 1~1.5m from the top of the fish, while rotating and lowering, wait for the hanging weight to drop slightly, and go up to the designed load inverted, if the hanging weight gradually drops to the original hanging weight or slightly larger: it proves that it has been reversed and the drill can be pulled out. If you need to withdraw the tool, strike down with the drill bit, while rotating and slowly lifting it up, you can withdraw
When the tool is down to 12m from the top of the fish, rotate, lower and circulate, wait for the hanging weight to drop 10~20kN, the pressure increases, and slowly lift it up If the hanging weight of the drilling tool increases, immediately retrieve the drill and reverse the rotation while lowering it to the person who is responsible for the drilling. Start the system to adjust the pressure. When the pump pressure rises to a certain value and remains unchanged, slowly lift the drill. If the hanging weight increases, then pull the drill. If the well is deep and the weight of the fallen objects is light, which makes it difficult to judge the hanging weight, repeat the above operation 3 to 4 times and then pull the drill close to the top of the well while rotating and lowering it to the person who is responsible for the drilling. Wait for the pump pressure to rise and the hanging weight to drop, and slowly lift the drill. If the hanging weight increases, then retrieve the drill. If you need to withdraw the tool, you can look down at the quality of the drilling tool, rotate it while lifting it, and you can withdraw the tool and lower it to 2 to 3m from the top of the well. Start flushing, slowly rotate it and slowly lower it to the person who is responsible for the drilling. Wait until the hanging weight drops by 10~80kN. , slowly lift the drill bit, when the hanging weight increases, it means the fish has been caught, then pull up the drill. If the length of the fallen object is short and the hanging weight is difficult to break, you can lift the drill bit by 1-2 ml, and repeat the above operation 3-4 times. When it exceeds the fish-touching position, pull up the drill bit when it encounters resistance. When the drill bit is lowered to 2-3m from the top of the fish, start the pump for flushing, slowly lower the drill bit to the top of the fish, increase the drilling pressure by 10-20kN, and control the speed within 50-100t/min. The displacement should be determined according to the annulus size, the depth of the fallen object and the performance of the repair fluid to ensure that the debris is brought out of the ground.
The inner diameter of the milling pipe should be 4-mm larger than the outer diameter of the pipe coupling or joint, and its length should exceed the length of a single piece of the fallen object. The drilling depth is about 0.2m. If a single drill needs to be connected during the milling process and the drill needs to be stopped, the drill must be lifted up to lift the tool away from the falling object and repeatedly move the drill. Before stopping the pump, the circulating displacement should be greater than 300L/min: the time should not be less than 30min. After the casing is blunted, the well is washed and the impurities in the inlet and outlet liquid samples are basically consistent. After the casing milling footage is 2-3m in the drilling well, it should be immediately lifted up to above the fish neck, and the casing milling can be carried out after confirming that the drill is not stuck. The cycle should be maintained during the lifting and lowering process. If there is no footage or serious jumping or reversing occurs in the middle, the cause should be analyzed in time and the next measures should be studied. To protect the casing during milling, add a 23-report drill brace or a centralizer to the drill string in advance-1119-94
Appendix A
Design document format for salvaging pipes and other objects
(Supplement)
The size of the construction design document is 190mm×265mmA2 Construction design document cover format
The cover format of the construction design document is as follows.
Construction team
Designer
Reviewer
Approver
Construction design document for salvaging pipes and other objects
A3 Construction design document content format
1. Basic data
Completion depth, m
Artificial bottom of well before month, m
Current reservoir pressure, MPa
Cement return depth, m
Reservoir location
Water content, %
Liquid production, m/d
Oil pressure, MPa
Sand production
Specification, mm
Description of falling objects in the well
SY/ T 5587.1994
Completion method
Oil compensation distance, m
Casing compensation distance, m
Inner diameter, mm
Concrete quality
Wall thickness, mm
Casing integrity
Gas-oil ratio, m/t
Oil production, t/ d
Casing pressure, MPa
(shape, size, material, depth, connection relationship, source of falling objects, etc.)
Wellbore structure diagram
Entry depth, m
II. Process technology design
1. Process technology optimization selection
SY/ T 5587.19-94
2. Construction parameter design and main technical requirements3. Raw material requirements
4. Downhole tool selection
5. Process construction string design
6. Production string design
7. Precautions
III. Construction design
1. Preparation before construction
2. Process design
3. Implementation points
4. Cost budget
5.Safety precautions and measures
6.Review opinions
7.Approval opinions
SY/ T 5587.19--94
Construction summary format
SY/ T 5587.19-94
Appendix B
Summary format of salvaging fallen objects from egrets
(Supplement)
The format of the construction summary is 190mm×265mmConstruction summary cover format
The cover format of the construction summary is as follows.
Construction team
Designer
Auditor
Approver
Construction summary of falling objects such as well drilling and pulling pipes
Construction summary content format
Construction implementation overview
SY/ T 5587.1994
Construction content and main data
SY/ T 5587.19- -94
2. Operation effect analysis (experience, lessons) 3. Operation time analysis
4. Problems found during construction and analysis of causes 5. Schematic diagram of completion string
6. Record of parameter changes
7. Single well cost accounting
8. Audit opinion
Tool name
Male and female cone
Slider slip fishing spear
Retractable fishing spear
Inverted fishing spear fishing shovel
Tubing coupling spear
Hydraulic fishing spear
Retractable slip row shovel
Window fishing shovel
Sleeve milling and grinding
SY/ T 5587.19-94
Appendix C
Operation method of conventional fishing tools
(reference)
Slowly probe down to the fishing side, confirm that the button making side is reached, add drilling pressure of 20-30kN. Make a button at a speed of 1020r/min, make a button 5-1U circle and lift it up. If the hanging weight increases, then pull out the drill. If the hanging weight does not increase: repeat the above operation. After the drill is made, if it is stuck and the measures such as movement, adjustment, rotation, etc. still cannot be unblocked, then lift the drill to the designed inverted load for inverting. If the hanging weight gradually drops to the original hanging weight or slightly larger and the torque decreases, it proves that it has been fished up or reversed. After slowly lifting it to the normal load, the drill is normally pulled up. When it is 1 to 1.5m away from the fish neck, remember to feel the weight and slowly lower it. If there is resistance when touching the fish, rotate the drill at different angles. After the tool enters the fish cavity, slowly lift it up and grab the fallen objects. If the weight increases, fish out the drill. If it is stuck and the measures such as movement still cannot be unblocked, you can take inverted measures. The inverted method is the same as above, flushing, rotating and releasing: when the hanging weight shows a decrease, rotate the drill counterclockwise! ~2 circles (you can turn more circles depending on the specific situation), slowly lift the drill bit: if the hanging weight increases, pull out the drill. If you need to withdraw the tool: strike down with the drill bit, rotate the drill bit 23 clockwise, and slowly lift it up at the same time: you can withdraw
The tool is down to 1~1.5m from the top of the fish, while rotating and lowering, wait for the hanging weight to drop slightly, and go up to the designed load inverted, if the hanging weight gradually drops to the original hanging weight or slightly larger: it proves that it has been reversed and the drill can be pulled out. If you need to withdraw the tool, strike down with the drill bit, while rotating and slowly lifting it up, you can withdraw
When the tool is down to 12m from the top of the fish, rotate, lower and circulate, wait for the hanging weight to drop 10~20kN, the pressure increases, and slowly lift it up If the hanging weight of the drilling tool increases, immediately retrieve the drill and reverse the rotation while lowering it to the person who is responsible for the drilling. Start the system to adjust the pressure. When the pump pressure rises to a certain value and remains unchanged, slowly lift the drill. If the hanging weight increases, then pull the drill. If the well is deep and the weight of the fallen objects is light, which makes it difficult to judge the hanging weight, repeat the above operation 3 to 4 times and then pull the drill close to the top of the well while rotating and lowering it to the person who is responsible for the drilling. Wait for the pump pressure to rise and the hanging weight to drop, and slowly lift the drill. If the hanging weight increases, then retrieve the drill. If you need to withdraw the tool, you can look down at the quality of the drilling tool, rotate it while lifting it, and you can withdraw the tool and lower it to 2 to 3m from the top of the well. Start flushing, slowly rotate it and slowly lower it to the person who is responsible for the drilling. Wait until the hanging weight drops by 10~80kN. , slowly lift the drill bit, when the hanging weight increases, it means the fish has been caught, then pull up the drill. If the length of the fallen object is short and the hanging weight is difficult to break, you can lift the drill bit by 1-2 ml, and repeat the above operation 3-4 times. When it exceeds the fish-touching position, pull up the drill bit when it encounters resistance. When the drill bit is lowered to 2-3m from the top of the fish, start the pump for flushing, slowly lower the drill bit to the top of the fish, increase the drilling pressure by 10-20kN, and control the speed within 50-100t/min. The displacement should be determined according to the annulus size, the depth of the fallen object and the performance of the repair fluid to ensure that the debris is brought out of the ground.
The inner diameter of the milling pipe should be 4-mm larger than the outer diameter of the pipe coupling or joint, and its length should exceed the length of a single piece of the fallen object. The drilling depth is about 0.2m. If a single drill needs to be connected during the milling process and the drill needs to be stopped, the drill must be lifted up to lift the tool away from the falling object and repeatedly move the drill. Before stopping the pump, the circulating displacement should be greater than 300L/min: the time should not be less than 30min. After the casing is blunted, the well is washed and the impurities in the inlet and outlet liquid samples are basically consistent. After the casing milling footage is 2-3m in the drilling well, it should be immediately lifted up to above the fish neck, and the casing milling can be carried out after confirming that the drill is not stuck. The cycle should be maintained during the lifting and lowering process. If there is no footage or serious jumping or reversing occurs in the middle, the cause should be analyzed in time and the next measures should be studied. To protect the casing during milling, add a 23-report drill brace or a centralizer to the drill string in advance-1119-94
Appendix A
Design document format for salvaging pipes and other objects
(Supplement)
The size of the construction design document is 190mm×265mmA2 Construction design document cover format
The cover format of the construction design document is as follows.
Construction team
Designer
Reviewer
Approver
Construction design document for salvaging pipes and other objects
A3 Construction design document content format
1. Basic data
Completion depth, m
Artificial bottom of well before month, m
Current reservoir pressure, MPa
Cement return depth, m
Reservoir location
Water content, %
Liquid production, m/d
Oil pressure, MPa
Sand production
Specification, mm
Description of falling objects in the well
SY/ T 5587.1994
Completion method
Oil compensation distance, m
Casing compensation distance, m
Inner diameter, mm
Concrete quality
Wall thickness, mm
Casing integrity
Gas-oil ratio, m/t
Oil production, t/ d
Casing pressure, MPa
(shape, size, material, depth, connection relationship, source of falling objects, etc.)
Wellbore structure diagram
Entry depth, m
II. Process technology design
1. Process technology optimization selection
SY/ T 5587.19-94
2. Construction parameter design and main technical requirements3. Raw material requirements
4. Downhole tool selection
5. Process construction string design
6. Production string design
7. Precautions
III. Construction design
1. Preparation before construction
2. Process design
3. Implementation points
4. Cost budget
5.Safety precautions and measures
6.Review opinions
7.Approval opinions
SY/ T 5587.19--94
Construction summary format
SY/ T 5587.19-94
Appendix B
Summary format of salvaging fallen objects from egrets
(Supplement)
The format of the construction summary is 190mm×265mmConstruction summary cover format
The cover format of the construction summary is as follows.
Construction team
Designer
Auditor
Approver
Construction summary of falling objects such as well drilling and pulling pipes
Construction summary content format
Construction implementation overview
SY/ T 5587.1994
Construction content and main data
SY/ T 5587.19- -94
2. Operation effect analysis (experience, lessons) 3. Operation time analysis
4. Problems found during construction and analysis of causes 5. Schematic diagram of completion string
6. Record of parameter changes
7. Single well cost accounting
8. Audit opinion
Tool name
Male and female cone
Slider slip fishing spear
Retractable fishing spear
Inverted fishing spear fishing shovel
Tubing coupling spear
Hydraulic fishing spear
Retractable slip row shovel
Window fishing shovel
Sleeve milling and grinding
SY/ T 5587.19-94
Appendix C
Operation method of conventional fishing tools
(reference)
Slowly probe down to the fishing side, confirm that the button making side is reached, add drilling pressure of 20-30kN. Make a button at a speed of 1020r/min, make a button 5-1U circle and lift it up. If the hanging weight increases, then pull out the drill. If the hanging weight does not increase: repeat the above operation. After the drill is made, if it is stuck and the measures such as movement, adjustment, rotation, etc. still cannot be unblocked, then lift the drill to the designed inverted load for inverting. If the hanging weight gradually drops to the original hanging weight or slightly larger and the torque decreases, it proves that it has been fished up or reversed. After slowly lifting it to the normal load, the drill is normally pulled up. When it is 1 to 1.5m away from the fish neck, remember to feel the weight and slowly lower it. If there is resistance when touching the fish, rotate the drill at different angles. After the tool enters the fish cavity, slowly lift it up and grab the fallen objects. If the weight increases, fish out the drill. If it is stuck and the measures such as movement still cannot be unblocked, you can take inverted measures. The inverted method is the same as above, flushing, rotating and releasing: when the hanging weight shows a decrease, rotate the drill counterclockwise! ~2 circles (you can turn more circles depending on the specific situation), slowly lift the drill bit: if the hanging weight increases, pull out the drill. If you need to withdraw the tool: strike down with the drill bit, rotate the drill bit 23 clockwise, and slowly lift it up at the same time: you can withdraw
The tool is down to 1~1.5m from the top of the fish, while rotating and lowering, wait for the hanging weight to drop slightly, and go up to the designed load inverted, if the hanging weight gradually drops to the original hanging weight or slightly larger: it proves that it has been reversed and the drill can be pulled out. If you need to withdraw the tool, strike down with the drill bit, while rotating and slowly lifting it up, you can withdraw
When the tool is down to 12m from the top of the fish, rotate, lower and circulate, wait for the hanging weight to drop 10~20kN, the pressure increases, and slowly lift it up If the hanging weight of the drilling tool increases, immediately retrieve the drill and reverse the rotation while lowering it to the person who is responsible for the drilling. Start the system to adjust the pressure. When the pump pressure rises to a certain value and remains unchanged, slowly lift the drill. If the hanging weight increases, then pull the drill. If the well is deep and the weight of the fallen objects is light, which makes it difficult to judge the hanging weight, repeat the above operation 3 to 4 times and then pull the drill close to the top of the well while rotating and lowering it to the person who is responsible for the drilling. Wait for the pump pressure to rise and the hanging weight to drop, and slowly lift the drill. If the hanging weight increases, then retrieve the drill. If you need to withdraw the tool, you can look down at the quality of the drilling tool, rotate it while lifting it, and you can withdraw the tool and lower it to 2 to 3m from the top of the well. Start flushing, slowly rotate it and slowly lower it to the person who is responsible for the drilling. Wait until the hanging weight drops by 10~80kN. , slowly lift the drill bit, when the hanging weight increases, it means the fish has been caught, then pull up the drill. If the length of the fallen object is short and the hanging weight is difficult to break, you can lift the drill bit by 1-2 ml, and repeat the above operation 3-4 times. When it exceeds the fish-touching position, pull up the drill bit when it encounters resistance. When the drill bit is lowered to 2-3m from the top of the fish, start the pump for flushing, slowly lower the drill bit to the top of the fish, increase the drilling pressure by 10-20kN, and control the speed within 50-100t/min. The displacement should be determined according to the annulus size, the depth of the fallen object and the performance of the repair fluid to ensure that the debris is brought out of the ground.
The inner diameter of the milling pipe should be 4-mm larger than the outer diameter of the pipe coupling or joint, and its length should exceed the length of a single piece of the fallen object. The drilling depth is about 0.2m. If a single drill needs to be connected during the milling process and the drill needs to be stopped, the drill must be lifted up to lift the tool away from the falling object and repeatedly move the drill. Before stopping the pump, the circulating displacement should be greater than 300L/min: the time should not be less than 30min. After the casing is blunted, the well is washed and the impurities in the inlet and outlet liquid samples are basically consistent. After the casing milling footage is 2-3m in the drilling well, it should be immediately lifted up to above the fish neck, and the casing milling can be carried out after confirming that the drill is not stuck. The cycle should be maintained during the lifting and lowering process. If there is no footage or serious jumping or reversing occurs in the middle, the cause should be analyzed in time and the next measures should be studied. To protect the casing during milling, add a 23-report drill brace or a centralizer to the drill string in advance-1119-94
Appendix B
Summary format of salvaging fallen objects of egrets
(Supplement)
The size of the construction summary is 190mm×265mmConstruction summary cover format
The cover format of the construction summary is as follows.
Construction team
Designer
Auditor
Approver
Construction summary of fallen objects of well drilling and pulling pipes
Construction summary content format
Construction implementation overview
SY/ T 5587.1994
Construction content and main data
SY/ T 5587.19- -94
2. Operation effect analysis (experience, lessons) 3. Operation time analysis
4. Problems found during construction and analysis of causes 5. Schematic diagram of completion string
6. Record of parameter changes
7. Single well cost accounting
8. Audit opinion
Tool name
Male and female cone
Slider slip fishing spear
Retractable fishing spear
Inverted fishing spear fishing shovel
Tubing coupling spear
Hydraulic fishing spear
Retractable slip row shovel
Window fishing shovel
Sleeve milling and grinding
SY/ T 5587.19-94
Appendix C
Operation method of conventional fishing tools
(reference)
Slowly probe down to the fishing side, confirm that the button making side is reached, add drilling pressure of 20-30kN. Make a button at a speed of 1020r/min, make a button 5-1U circle and lift it up. If the hanging weight increases, then pull out the drill. If the hanging weight does not increase: repeat the above operation. After the drill is made, if it is stuck and the measures such as movement, adjustment, rotation, etc. still cannot be unblocked, then lift the drill to the designed inverted load for inverting. If the hanging weight gradually drops to the original hanging weight or slightly larger and the torque decreases, it proves that it has been fished up or reversed. After slowly lifting it to the normal load, the drill is normally pulled up. When it is 1 to 1.5m away from the fish neck, remember to feel the weight and slowly lower it. If there is resistance when touching the fish, rotate the drill at different angles. After the tool enters the fish cavity, slowly lift it up and grab the fallen objects. If the weight increases, fish out the drill. If it is stuck and the measures such as movement still cannot be unblocked, you can take inverted measures. The inverted method is the same as above, flushing, rotating and releasing: when the hanging weight shows a decrease, rotate the drill counterclockwise! ~2 circles (you can turn more circles depending on the specific situation), slowly lift the drill bit: if the hanging weight increases, pull out the drill. If you need to withdraw the tool: strike down with the drill bit, rotate the drill bit 23 clockwise, and slowly lift it up at the same time: you can withdraw
The tool is down to 1~1.5m from the top of the fish, while rotating and lowering, wait for the hanging weight to drop slightly, and go up to the designed load inverted, if the hanging weight gradually drops to the original hanging weight or slightly larger: it proves that it has been reversed and the drill can be pulled out. If you need to withdraw the tool, strike down with the drill bit, while rotating and slowly lifting it up, you can withdraw
When the tool is down to 12m from the top of the fish, rotate, lower and circulate, wait for the hanging weight to drop 10~20kN, the pressure increases, and slowly lift it up If the hanging weight of the drilling tool increases, immediately retrieve the drill and reverse the rotation while lowering it to the person who is responsible for the drilling. Start the system to adjust the pressure. When the pump pressure rises to a certain value and remains unchanged, slowly lift the drill. If the hanging weight increases, then pull the drill. If the well is deep and the weight of the fallen objects is light, which makes it difficult to judge the hanging weight, repeat the above operation 3 to 4 times and then pull the drill close to the top of the well while rotating and lowering it to the person who is responsible for the drilling. Wait for the pump pressure to rise and the hanging weight to drop, and slowly lift the drill. If the hanging weight increases, then retrieve the drill. If you need to withdraw the tool, you can look down at the quality of the drilling tool, rotate it while lifting it, and you can withdraw the tool and lower it to 2 to 3m from the top of the well. Start flushing, slowly rotate it and slowly lower it to the person who is responsible for the drilling. Wait until the hanging weight drops by 10~80kN. , slowly lift the drill bit, when the hanging weight increases, it means the fish has been caught, then pull up the drill. If the length of the fallen object is short and the hanging weight is difficult to break, you can lift the drill bit by 1-2 ml, and repeat the above operation 3-4 times. When it exceeds the fish-touching position, pull up the drill bit when it encounters resistance. When the drill bit is lowered to 2-3m from the top of the fish, start the pump for flushing, slowly lower the drill bit to the top of the fish, increase the drilling pressure by 10-20kN, and control the speed within 50-100t/min. The displacement should be determined according to the annulus size, the depth of the fallen object and the performance of the repair fluid to ensure that the debris is brought out of the ground.
The inner diameter of the milling pipe should be 4-mm larger than the outer diameter of the pipe coupling or joint, and its length should exceed the length of a single piece of the fallen object. The drilling depth is about 0.2m. If a single drill needs to be connected during the milling process and the drill needs to be stopped, the drill must be lifted up to lift the tool away from the falling object and repeatedly move the drill. Before stopping the pump, the circulating displacement should be greater than 300L/min: the time should not be less than 30min. After the casing is blunted, the well is washed and the impurities in the inlet and outlet liquid samples are basically consistent. After the casing milling footage is 2-3m in the drilling well, it should be immediately lifted up to above the fish neck, and the casing milling can be carried out after confirming that the drill is not stuck. The cycle should be maintained during the lifting and lowering process. If there is no footage or serious jumping or reversing occurs in the middle, the cause should be analyzed in time and the next measures should be studied. To protect the casing during milling, add a 23-report drill brace or a centralizer to the drill string in advance-1119-94
Appendix B
Summary format of salvaging fallen objects of egrets
(Supplement)
The size of the construction summary is 190mm×265mmConstruction summary cover format
The cover format of the construction summary is as follows.
Construction team
Designer
Auditor
Approver
Construction summary of fallen objects of well drilling and pulling pipes
Construction summary content format
Construction implementation overview
SY/ T 5587.1994
Construction content and main data
SY/ T 5587.19- -94
2. Operation effect analysis (experience, lessons) 3. Operation time analysis
4. Problems found during construction and analysis of causes 5. Schematic diagram of completion string
6. Record of parameter changes
7. Single well cost accounting
8. Audit opinion
Tool name
Male and female cone
Slider slip fishing spear
Retractable fishing spear
Inverted fishing spear fishing shovel
Tubing coupling spear
Hydraulic fishing spear
Retractable slip row shovel
Window fishing shovel
Sleeve milling and grinding
SY/ T 5587.19-94
Appendix C
Operation method of conventional fishing tools
(reference)
Slowly probe down to the fishing side, confirm that the button making side is reached, add drilling pressure of 20-30kN. Make a button at a speed of 1020r/min, make a button 5-1U circle and lift it up. If the hanging weight increases, then pull out the drill. If the hanging weight does not increase: repeat the above operation. After the drill is made, if it is stuck and the measures such as movement, adjustment, rotation, etc. still cannot be unblocked, then lift the drill to the designed inverted load for inverting. If the hanging weight gradually drops to the original hanging weight or slightly larger and the torque decreases, it proves that it has been fished up or reversed. After slowly lifting it to the normal load, the drill is normally pulled up. When it is 1 to 1.5m away from the fish neck, remember to feel the weight and slowly lower it. If there is resistance when touching the fish, rotate the drill at different angles. After the tool enters the fish cavity, slowly lift it up and grab the fallen objects. If the weight increases, fish out the drill. If it is stuck and the measures such as movement still cannot be unblocked, you can take inverted measures. The inverted method is the same as above, flushing, rotating and releasing: when the hanging weight shows a decrease, rotate the drill counterclockwise! ~2 circles (you can turn more circles depending on the specific situation), slowly lift the drill bit: if the hanging weight increases, pull out the drill. If you need to withdraw the tool: strike down with the drill bit, rotate the drill bit 23 clockwise, and slowly lift it up at the same time: you can withdraw
The tool is down to 1~1.5m from the top of the fish, while rotating and lowering, wait for the hanging weight to drop slightly, and go up to the designed load inverted, if the hanging weight gradually drops to the original hanging weight or slightly larger: it proves that it has been reversed and the drill can be pulled out. If you need to withdraw the tool, strike down with the drill bit, while rotating and slowly lifting it up, you can withdraw
When the tool is down to 12m from the top of the fish, rotate, lower and circulate, wait for the hanging weight to drop 10~20kN, the pressure increases, and slowly lift it up If the hanging weight of the drilling tool increases, immediately retrieve the drill and reverse the rotation while lowering it to the person who is responsible for the drilling. Start the system to adjust the pressure. When the pump pressure rises to a certain value and remains unchanged, slowly lift the drill. If the hanging weight increases, then pull the drill. If the well is deep and the weight of the fallen objects is light, which makes it difficult to judge the hanging weight, repeat the above operation 3 to 4 times and then pull the drill close to the top of the well while rotating and lowering it to the person who is responsible for the drilling. Wait for the pump pressure to rise and the hanging weight to drop, and slowly lift the drill. If the hanging weight increases, then retrieve the drill. If you need to withdraw the tool, you can look down at the quality of the drilling tool, rotate it while lifting it, and you can withdraw the tool and lower it to 2 to 3m from the top of the well. Start flushing, slowly rotate it and slowly lower it to the person who is responsible for the drilling. Wait until the hanging weight drops by 10~80kN. , slowly lift the drill bit, when the hanging weight increases, it means the fish has been caught, then pull up the drill. If the length of the fallen object is short and the hanging weight is difficult to break, you can lift the drill bit by 1-2 ml, and repeat the above operation 3-4 times. When it exceeds the fish-touching position, pull up the drill bit when it encounters resistance. When the drill bit is lowered to 2-3m from the top of the fish, start the pump for flushing, slowly lower the drill bit to the top of the fish, increase the drilling pressure by 10-20kN, and control the speed within 50-100t/min. The displacement should be determined according to the annulus size, the depth of the fallen object and the performance of the repair fluid to ensure that the debris is brought out of the ground.
The inner diameter of the milling pipe should be 4-mm larger than the outer diameter of the pipe coupling or joint, and its length should exceed the length of a single piece of the fallen object. The drilling depth is about 0.2m. If a single drill needs to be connected during the milling process and the drill needs to be stopped, the drill must be lifted up to lift the tool away from the falling object and repeatedly move the drill. Before stopping the pump, the circulating displacement should be greater than 300L/min: the time should not be less than 30min. After the casing is blunted, the well is washed and the impurities in the inlet and outlet liquid samples are basically consistent. After the casing milling footage is 2-3m in the drilling well, it should be immediately lifted up to above the fish neck, and the casing milling can be carried out after confirming that the drill is not stuck. The cycle should be maintained during the lifting and lowering process. If there is no footage or serious jumping or reversing occurs in the middle, the cause should be analyzed in time and the next measures should be studied. To protect the casing during milling, add a 23-report drill brace or a centralizer to the drill string in advance-115m, lower while rotating, wait for the hanging weight to drop slightly, and go up to the designed load cut, if the hanging weight gradually drops to the original hanging weight or slightly larger: it proves that it has been reversed and the drill can be pulled out. If you need to withdraw the tool, use the drill to strike down, rotate and slowly pull up, and you can withdraw
When the tool is 12m away from the top of the fish, rotate, lower and circulate, wait for the hanging weight to drop 10-20kN, the system pressure increases, slowly lift the drill, if the hanging weight increases, immediately fish out the drill, reverse the rotation and lower to rescue the person who hit the carrier, open the system to adjust the pressure, when the pump pressure rises to a certain value and remains unchanged, slowly lift the drill, if the hanging weight increases, then pull out the drill. If the well is deep and the weight of the fallen objects is light, making it difficult to judge the hanging weight, repeat the above operation 3 to 4 times, then pull up the drill bit and approach the top of the well, rotate it, lower it, and circulate it to the salvage party. Wait for the pump pressure to rise and the hanging weight to drop, slowly lift the drill bit, if the hanging weight increases, then salvage and pull up the drill bit. If it is necessary to withdraw the tool, look down at the quality of the drill bit, rotate it and lift it up at the same time, and you can withdraw the tool and lower it to 2 to 3m from the top of the well, start flushing, slowly rotate it and lower it to the salvage party, wait for the hanging weight to drop by 10~50kN, then slowly lift the drill bit, if the hanging weight increases, indicating it has been salvaged, then pull up the drill bit. If the length of the falling object is short and the hanging weight is difficult to break, the drill tool can be lifted up by 1-2 ml, and the above operation can be repeated 3-4 times. When the fish is hit, the drilling tool is lowered to 2-3m from the top of the fish. The pump is turned on for flushing, and the drill tool is slowly lowered to the top of the fish. The drilling pressure is increased by 10-20kN, and the speed is controlled within 50-100t/min. The displacement should be determined according to the size of the annulus, the depth of the falling object and the performance of the repair fluid to ensure that the debris is brought out of the ground.
The inner diameter of the casing milling pipe should be larger than the outer diameter of the pipe coupling or joint by 4-mm, and its length should exceed the length of the single falling object by about 0.2m. If the casing milling is When it is necessary to connect a single drill and stop, the drill must be lifted up to lift the tool away from the falling object and repeatedly move the drill. Before stopping the pump, the circulating displacement should be greater than 300L/min: the time should not be less than 30min. After the casing is blunted, the well is washed and the impurities in the inlet and outlet liquid samples are basically consistent. After the casing milling footage is 2 to 3m in the drilling well, it should be immediately lifted up to above the fish neck, and the casing milling should be carried out after confirming that the drill is not stuck. The cycle should be maintained during the lifting and lowering process. If there is no footage or serious jumping or reversing occurs in the middle, the cause should be analyzed in time and the next step should be studied. The casing should be protected during milling, and a 23-report drill brace or a centralizer should be added to the drill string in advance-115m, lower while rotating, wait for the hanging weight to drop slightly, and go up to the designed load cut, if the hanging weight gradually drops to the original hanging weight or slightly larger: it proves that it has been reversed and the drill can be pulled out. If you need to withdraw the tool, use the drill to strike down, rotate and slowly pull up, and you can withdraw
When the tool is 12m away from the top of the fish, rotate, lower and circulate, wait for the hanging weight to drop 10-20kN, the system pressure increases, slowly lift the drill, if the hanging weight increases, immediately fish out the drill, reverse the rotation and lower to rescue the person who hit the carrier, open the system to adjust the pressure, when the pump pressure rises to a certain value and remains unchanged, slowly lift the drill, if the hanging weight increases, then pull out the drill. If the well is deep and the weight of the fallen objects is light, making it difficult to judge the hanging weight, repeat the above operation 3 to 4 times, then pull up the drill bit and approach the top of the well, rotate it, lower it, and circulate it to the salvage party. Wait for the pump pressure to rise and the hanging weight to drop, slowly lift the drill bit, if the hanging weight increases, then salvage and pull up the drill bit. If it is necessary to withdraw the tool, look down at the quality of the drill bit, rotate it and lift it up at the same time, and you can withdraw the tool and lower it to 2 to 3m from the top of the well, start flushing, slowly rotate it and lower it to the salvage party, wait for the hanging weight to drop by 10~50kN, then slowly lift the drill bit, if the hanging weight increases, indicating it has been salvaged, then pull up the drill bit. If the length of the falling object is short and the hanging weight is difficult to break, the drill tool can be lifted up by 1-2 ml, and the above operation can be repeated 3-4 times. When the fish is hit, the drilling tool is lowered to 2-3m from the top of the fish. The pump is turned on for flushing, and the drill tool is slowly lowered to the top of the fish. The drilling pressure is increased by 10-20kN, and the speed is controlled within 50-100t/min. The displacement should be determined according to the size of the annulus, the depth of the falling object and the performance of the repair fluid to ensure that the debris is brought out of the ground.
The inner diameter of the casing milling pipe should be larger than the outer diameter of the pipe coupling or joint by 4-mm, and its length should exceed the length of the single falling object by about 0.2m. If the casing milling is When it is necessary to connect a single drill and stop, the drill must be lifted up to lift the tool away from the falling object and repeatedly move the drill. Before stopping the pump, the circulating displacement should be greater than 300L/min: the time should not be less than 30min. After the casing is blunted, the well is washed and the impurities in the inlet and outlet liquid samples are basically consistent. After the casing milling footage is 2 to 3m in the drilling well, it should be immediately lifted up to above the fish neck, and the casing milling should be carried out after confirming that the drill is not stuck. The cycle should be maintained during the lifting and lowering process. If there is no footage or serious jumping or reversing occurs in the middle, the cause should be analyzed in time and the next step should be studied. The casing should be protected during milling, and a 23-report drill brace or a centralizer should be added to the drill string in advance-11
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