SY/T 5587.20-1994 Procedure for fishing rods and other objects in conventional well repair work in oil and water wells
Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T 5587.2094
Oil and Water Combined Conventional Repair and Renovation Operation
Technical Practice for Salvaging Rods
Published on January 18, 1995
China National Petroleum Corporation
Implementation on July 1, 1995
1 Subject Content and Scope of Application
Petroleum and Natural Gas Industry Standard of the People's Republic of China Oil and Water Combined Conventional Repair and Renovation Operation
Technical Practice for Salvaging Rods
SY/T 5587.20-94
This standard specifies the technical requirements for the design and preparation, construction preparation, salvage procedures, safety, quality control, data collection and construction summary of salvaging rods.
This standard is applicable to salvaging various types of sucker rods. 2 Reference standards
SY/T5292 Specification for measuring instruments for downhole operations in oil and gas fields SY/T5587.3 Conventional well repair operations for oil and water wells, well pressure replacement and blowdown operation procedures SY/T5587.7 Conventional well repair operations for oil and water wells, well washing operation procedures SY/T5791 Hydraulic well repair rig vertical derrick operation procedures 3 Construction design
3.1 Well survey
3.1.1 "Understand the geological and drilling data, and make clear the well structure and casing integrity 3.1.2 Understand the production situation of the oil well, including the liquid production, water content, gas-oil ratio, oil pressure, casing pressure, static pressure and other information. Understand the connection between the oil well and the surrounding water injection wells
3.1,3 Find out whether the fallen objects are in the casing or in the tubing. Find out the cause of the fallen objects, type, length, shape of the fish top and the depth of the color top in the well.
3.2 Construction design preparation
3.2.1 Formulate specific measures according to the operation requirements and the actual investigation: The construction unit shall prepare the construction design book. The design content shall comply with the provisions of Appendix A (Supplement).
3.2.2 The data shall be complete, the process shall be concise, the handwriting shall be neat, and the layout shall be tidy. 4 Construction preparation
4.1 The vertical well frame shall be carried out in accordance with the provisions of SY/T5791. 4.2 The well pressure shall be carried out in accordance with the provisions of SY/T5587.3. 4.3 See Table 1 for salvage tools.
5 Salvage procedures
·5.1 Salvage in the oil pipe
5.1,1 Double-clamp salvage
5.1.1.1 Applicable to the tripped wells with intact fish top threads and fish top depth less than 500m. Select sucker rod joints or coupling double-clamp salvage according to the internal fish top. 5.1.1.2
Lower the sucker rod double-clamp column, and manually buckle it smoothly when the bottom joint contacts the fish top. Try to lift it several times. If the hanging weight increases and the rod is lowered, China National Petroleum Corporation approved on January 18, 1995 and implemented on July 1, 1995
The column is pulled out after being buckled tightly.
SY/ T 5587.2094
5.1.1.4 If the salvage by buckling is unsuccessful, salvage tools should be used for salvage. 5.1.2 Salvage by salvage tools
5.1.2.1 Select salvage tools according to the fish top situation in the well. First, select a retractable salvage tool to lower the sucker rod string with the salvage tool into the oil pipe for salvage. The operation methods of various salvage tools are shown in Appendix C (reference). 5.1.2.2)
Table 1 Rod-type salvage tools
Tool name
Retractable sucker rod salvage tube
Non-retractable sucker rod salvage tube
Combined sucker rod salvage cylinder
Loose-leaf salvage cylinder
Three-ball rolling device
Eccentric sucker rod coupling fishing rod
Sucker rod coupling fishing spear
5.2 Salvage in casing
Salvage of broken sucker rod in tubing or casingSalvage of broken sucker rod in tubing or casingApplicable scope
Without changing slips, salvage the sucker rod body or sucker rod shoulder and coupling in tubingUsed to salvage small diameter objects with shoulder or coupling in large annular spaceSalvage sucker rod coupling or thickened shoulder of sucker rod in casingSmall salvage tube used to salvage sucker rod couplingSalvage bent sucker rod in pipe
Tools used to salvage fish tops in tubing or casing5.2.1Select salvage tools according to the fish top situation. The outer diameter of the tool for salvaging in casing should be 8-10mm smaller than the inner diameter of casing. Connect the selected salvage tool to the drill pipe or tubing and lower it into the well. 5.2.23
When the tool is lowered to the vicinity of the fish top, it should be turned slowly and gently to prevent the fish top from deforming. 5.2.4 The well washing shall be carried out in accordance with the provisions of SY/T5587.7. 5.2.5 The operation method of the salvage tool is shown in Appendix C (reference). 5.3 If the salvage is unsuccessful once, a lead mold should be lowered to print, and after the color top situation is clarified, an appropriate tool should be selected to continue the salvage. 5.4 After the salvage operation is completed, the well should be washed and replaced by spraying to resume production. 6 Salvage quality control
The metering instruments shall be equipped in accordance with the provisions of SY/T5292. 6.2
Avoid the salvage tool from being lowered too deep to prevent it from getting stuck below the color top and complicating the accident. 6.3
When salvaging in the casing, the salvage tool lowered should have water holes and be able to circulate. 6.4
When hydraulically pressing a well, timely adjust the well pressure and fluid performance according to the changes of gas invasion, overflow and density. The tool string combination should minimize the transition joints, and the strength of the matching joints shall not be lower than the strength of the string. 6.5
The size and performance of the salvage tool shall meet the requirements and have a certificate of conformity. A sketch should be drawn before use: indicate the size for future reference. 6.7
Select the tool according to the falling object situation, and first choose the retractable salvage tool. Safety requirements
It is strictly forbidden to operate overload, and it is not allowed to lift or release violently. 7.2 Take safety measures such as anti-smoke, fire prevention, and anti-freeze. 7.3 The well site should use electricity safely. The electrical facilities should be managed by a dedicated person and comply with relevant regulations. 7.4 The parallel ports should be tightly covered to prevent new objects from falling.
Data collection and construction summary
8.1 Data collection
SY/ T 5587.20-94
8.1.1． Name, specification, length, name of the salvaged objects. Specification, length, remaining problems, lead mold specification, man-in depth, and imprints.
8.1.2 Other data should be collected according to the requirements of the operation design, construction summary and relevant regulations. 8.2 Construction summary
The construction summary shall be filled in by the construction unit within five days of well completion, and the technical person in charge shall review it and submit it to the competent department. The construction summary shall comply with the provisions of Appendix B (Supplement).
Format of construction design document
SY/ T 5587.2094
Appendix A
Format of design document for salvaging rod-type fallen objects operation
(Supplement)
The format of construction design document is 265m1m×203m1m. Format of cover of construction design document
See Figure A1 for the cover format of construction design document. Oilfield
Factory (mine)
Design of fishing rod and other falling objects
Design unit:
Designer:
Approving person:
Approving person:
A3 design book content format
Basic data
Well completion method
Drilling completion date
Casing compensation distance.m
Cement return height m
Oil production,/d
Perforation section
SY/ T 5587,2094
Completion well depth.m
Current artificial well bottom,m
Slot height,m
Hole density, hole/m
Liquid production,m / d
Water content, %
Main measures and abnormal situation tips in the past 3. Purpose and effect prediction
4. Preparation before construction
5. Key points of process design and implementation
6. Cost budget
7. Schematic diagram of underground accident string
8. Safety precautions and measures
SY/ T 5587.2094
Artificial merging
Construction summary report format
SY/ T 5587.20-94
Appendix B
Construction summary report format for salvaging rod-like fallen objects (supplement)
The format of the construction summary report is 265m1m×20311mB2 Cover format of construction summary report
The cover format of the construction summary report is shown in Figure B1.
Factory (mine)
Construction summary for salvaging rod-like fallen objects
Construction unit:
Form filler:
Reviewer:
Construction summary content format
Year and month country
Basic data
Date of submission
Removing oil rods
Well depth after repair
SY/ T 5587:20—94
Day: Completion date
m; Actual work of this well
Operation timeliness and timeliness analysis
3. Operation effect analysis
4. Detailed description of construction and problems found during construction and their original history of downhole tools and salvaged objects
Tool name
Tool specifications
6. Record of parameter changes and remaining problems
7. Cost accounting of a single well|| tt||Tool size
Name of falling objects
Specifications of falling objects
Tool namebZxz.net
Retractable sucker rod hitter
Non-retractable sucker support
Overshot tube
Combined sucker rod hitter
Eccentric sucker rod joint
Hoop fishing tube
Sucker rod joint fishing spear
Loose-leaf fishing merchant
Three-ball fishing device
SY/ T 5587.20--94
Appendix C
Operation method of common fishing rod type falling object tools (reference)
Operation method
Used for fishing in tubing or casing
After the tool is lowered to the vicinity of the expected fish top, slowly turn and gently lower it to fish. When the weight indicator shows a reduction, lift the fishing pipe string. If the hanging weight increases, pull out the drill and fish out the falling object. After the sucker rod is caught and traced, once it is stuck, the maximum pulling force shall not exceed the allowable load of the sucker rod. If it cannot be unstuck, you can first hit it slightly, then slowly rotate right, lift and withdraw. The tool is used to salvage the sucker rod in the tubing or casing. When the tool is lowered to the vicinity of the expected fish top, it should be rotated right slowly and gently to allow the sucker rod to enter the cylinder. When the indicator weight shows a reduction, stop lowering and then lift the pipe column to fish out the fallen objects. It is used to salvage the sucker rod in the tubing or casing arm. When the tool is lowered to the vicinity of the expected fish top, slowly turn and gently release it to introduce the fallen objects. When the indicator weight shows a reduction, stop lowering and lift the pipe column. If the hanging weight increases, start drilling and fish out the fallen objects in the oil pipe. Fishing the sucker rod in the pipe or casing
Lower the fishing string with a suitable eccentric sleeve into the well. When it reaches the expected fish top depth, slowly rotate and gently lower it. When the weight indicator shows a lightening, continue to lower it by 0.5-0.6m. Lift and lower it 2-3 times. After confirming that the fallen fish is caught, lift the tool and hold the fallen object out. Used to fish the sucker rod in the tubing or casing. When the tool is lowered to the vicinity of the expected fish top, slowly rotate and lower it. When the weight indicator shows a lightening, lift the tool string and fish out the fallen object. Used to fish the sucker rod in the casing
When the tool is lowered to the vicinity of the expected fish top, slowly rotate and gently lower it to allow the fallen fish to enter the guide shoe. Pay attention to the weight indicator. If there is a slight change in the hanging weight, stop lowering immediately, lift the pipe, and pull out the fallen objects. Used for fishing sucker rods in casing. After the tool passes the fish head fishing position, stop lowering and slowly lift it up. If the hanging weight on the weight indicator increases, lift the pipe column to pull out the fallen objects. Used for fishing sucker rods in casing. Put the fishing hook through the upper joint of the second sucker rod, rotate the sucker rod into the hook, and lift the pipe column to fish out the fallen objects. 9. Additional instructions: SY/ T 5587.20-94. This standard is proposed and managed by the Oil and Gas Production Professional Standardization Committee. This standard was drafted by the Second Downhole Operation Engineering Company of Jilin Oilfield Administration. The main drafters of this standard are Li Jingyao, Zhou Dianqi, and Ban Jinghong. 10
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