SY/T 5339-2000 Recommended practices for sand control of artificial wellbore walls
Some standard content:
1CS 75.020
Registration No.: 68262000
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY/T 53392000
Recommended practice for
sand control technology of artificial borehole wall2000—03—10Published
State Petroleum and Chemical Industry Bureau
2000－10-01Implementation
SY/T 5339-2000
2 Reference standards
Preparatory work before sand control construction
Design of process parameters for artificial wall sand control
Joint preparation
Sand control construction procedure
Quality control
Summary of sand control construction
9 Health, safety and environmental protection requirements
Appendix A (suggestive appendix)
Appendix B (suggestive appendix)
Appendix C (suggestive appendix)|| tt||Appendix D (suggested appendix)
Appendix E (suggested appendix)
Format of sand control well design commission
Format of sand control technology design for artificial well wall
Format of sand control construction design for artificial well wall
Recommended methods for selecting filling sand particle sizeRecommended methods for sand control of artificial well wallSummary format of sand control constructionH
SY/T53392000
This standard is a revision of SY/T5339-88. The revised standard retains the contents of the original standard that are still applicable today, incorporates several commonly used artificial well wall sand control technologies, and revises some construction procedures, design parameters, etc., to make this standard more universal and practical.
This paragraph amends the following items: I) The name of the standard is changed to "Recommended Practice for Artificial Wall Sand Control"; II) The scope of application is expanded; III) The "Terms" chapter is deleted; I) The construction parameters are adjusted; V) "Health, safety and environmental protection requirements" are added;) The appendix adds "Sand Control Design Commission Format" and "Manhole Wall Sand Control Process Design Format". From the month of entry into force, this standard will replace SY/T5339-88 at the same time. Appendix A, Appendix H, Appendix C, Appendix D, Appendix F of this standard are all informative appendices. This standard is proposed by China National Petroleum Corporation. This standard is under the jurisdiction of the Oil and Gas Production Professional Standardization Committee. This standard was drafted by: Dagang Oil and Gas Group Drilling and Production Technology Research Institute. The main drafters of this standard are Zeng Qinguo, Ma Jianmin and Huai Chunsheng. This standard was first issued in February 1989. This is the first revision. 1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Recommended practice for
sand control technology of artificial horchnle wailSY^T 5339--2(0
Replace SY/T 5339—88
This standard specifies the design parameters of the sand control process for artificial well walls, downhole operation preparation for sand control wells, sand control construction procedures and quality requirements
This standard is applicable to all types of conventional oil wells and water wells for sand control (steam injection thermal recovery wells can be used as a reference for sand control). 2 Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. SY/T51102000 Casing scraper
SY51832000 Evaluation method for sand control effect in oil wellsSY Men 5335—88 Blast hole flusher
SY/T5341-88 Sesbania fracturing fluid
SY5587.5-93 Conventional well repair operations for oil and water wells Sand surface exploration and sand flushing operation procedures for oil and water wellsSY/T 5587.16-93 Procedures for routine well repair operations for oil and water wells, well clearing and casing scraping SY63621998 Guide to health, safety and environmental management system for underground operations in petroleum and natural gas 3 Preparations before sand control construction
3.1 Collect information
Before sand control construction, the process design unit shall collect information after receiving the sand control design entrustment letter from Party A [see Appendix A (suggestive appendix)] and the geological design, and shall pay special attention to the integrity of the casing before the date. 3.2 Prepare sand control engineering and construction design
The process design unit shall prepare the sand control engineering design book according to Party A’s entrustment requirements and the geological data provided. The format is shown in Appendix B (suggestive appendix). The construction unit shall prepare the construction design book according to the engineering design requirements. The format is shown in Appendix C (suggestive appendix). Each design book shall be reviewed and approved according to the technical undertaking responsibility system Construction can be carried out only after the delay. 3.3 Selection of formation pretreatment fluid, well killing fluid, sand flushing, and blasthole flushing 3.3.1 According to the results of formation sand sample analysis and the specific situation of the sand control well, determine the acidification and plugging solution plan, and consider chemical treatment such as anti-emulsification and prevention of new sedimentation.
3.3.2 Determine the type of well killing fluid used according to the formation and fluid material data of the construction. The well killing fluid is required to be clean and have little damage to the oil layer. It is required to design the four main parameters of density, solid content, filtration loss and viscosity. 3.3.3 The sand flushing fluid and blasthole flushing fluid should be a fluid that has little damage to the oil layer and good sand carrying performance. 1) Artificial well wall refers to the process of carrying consolidable granular materials with specific physical and chemical properties through the blasthole into the nearby formation outside the casing by the sand collecting fluid, and forming a well wall with certain strength and permeability after solidification to block the formation sand. Approved by the State Administration of Petroleum and Chemical Industry on March 10, 2000, implemented on 20H0-10-01
3.4 Water-based sand-carrying fluid
SY/T 5339--2000
Select the formula of sand-carrying fluid according to the special requirements of various artificial well wall consolidation. The sand-carrying fluid is required to be clean and have little damage to the oil layer. The parameters such as solid content, filtration loss and viscosity should be designed well. The technical indicators of the thickener used refer to SY5341.3.5 Downhole tools used in sand control operations
a) Well clearance gauge: its outer diameter should be 6-8mm smaller than the inner diameter of the casing, and the length should be greater than 1msb) Casing scraper should comply with the provisions of SY/T5110;c) Blasthole flusher should comply with the provisions of SY/T5335;d) Hydraulic pressure differential sand control packer;
e) Drilling plug drilling tool.
3.6 Ground equipment
alLiquid preparation container:
b) Special construction vehicle group: including cement truck, sand mixing truck, mixer truck, etc.: c) High-pressure manifold.
4 Design of process parameters for artificial well wall sand control
4.1 Selection of artificial well wall sand control materials
4.1.1 Allowable sand particle size
4.1.1.1 Analysis of formation sand particle size
Collect sand samples with representative properties in the sand control layer for screening, draw the formation sand particle size cumulative mass distribution curve, mark the corresponding particle size ds0 (called the median formation sand particle size) at the point of 50% cumulative mass, and calculate the formation sand mean square coefficient C using formula (1): C-dao
Wherein: d40——the corresponding particle size at the point of 40% cumulative mass on the formation sand particle size cumulative mass distribution curve, mm; u90——the corresponding particle size at the point of 90% cumulative mass on the formation sand particle size cumulative mass distribution curve, mrn. 4.1.1.2 Selection of filling sand
For uniform formation sand with a C value between 3 and 5, the median size of the filling sand should be 4 to 8 times the median size of the formation sand: If the C value of the formation sand is greater than 5, the selected filling sand size should be smaller. The recommended selection of several filling sand sizes is shown in Appendix I) (Suggested Appendix).
4.1.1,3 Selection of filling sand particle size in multi-layer section construction In the construction of multi-layer sections, the minimum median value of the formation sand particle size is used as the basis, and the filling sand is selected according to the description in 4.1.1.2. 4.1,2 Selection of filling sand roundness and sphericity
The roundness and sphericity of the filling sand are required to be no less than 0.6. 4.1.3 Requirements for bonding strength and permeability
The performance of the selected artificial well wall sand control material must meet the performance index requirements of the industry standard or enterprise standard of each product, and the curing temperature, bonding strength and permeability of the selected material are required to meet the needs of normal production of sand control eyebrow oil and water river. 4.2 Selection of amount
4.2.1 Design of sand quantity for construction difficulties
When the person cannot test the volume of the deficit after the formation sand, it is recommended that: the design sand filling quantity is reported according to the cumulative sand volume flushed out of the sand control layer in previous operations minus the cumulative filling sand volume, and the sand content and particle size of the crude oil are considered for estimation. The calculation formula of the sand quantity for L design is:
V- Vk+ Vd+ Vr
Where: V.——Design sand quantity. m;
Vk——Sand filling quantity of formation deficit, m;
V——The maximum amount of sand accumulated in the well casing, m;
SY/T 53392000
Vf——Design additional quantity, generally 20% of the sand filling quantity of formation deficit, m3,4.2.2 Design of liquid preparation for construction
In order to keep the performance of the liquid used in the operation consistent, it is recommended that the pre-flushing liquid, sand-carrying liquid and displacement liquid are the same liquid. 4.2.2.1 The amount of pre-flushing liquid is determined according to the designed displacement and the absorption of the oil layer, and is generally not less than 10m2. 4.2.2.2 The amount of water-based sand-carrying liquid is calculated according to formula (3): V.
Where: V,——Sand-carrying liquid quantity, m;
V——Design sand quantity, m;
The minimum sand-carrying ratio designed.
4.2.2.3 The amount of displacement fluid is generally 1.0 to 1.3 times the volume of the pipe string and the surface pipe. Considering the residual volume when using the liquid distribution device, it is necessary to add 8-10m according to the designed total liquid volume. 4.3 Selection of construction parameters
4.3.1 Construction pump pressure
The construction pump is determined by the process designer according to different process methods and formation characteristics. 4.3.2 Construction displacement
The construction displacement is generally 600 to 1000L/min. If the thickness of the sand control layer is greater than 10m, the displacement can be increased accordingly. 4.3.3 Sand carrying ratio
The design volume fraction is between 10% and 30%, generally 15% to 20%. 5 Preparation for well drilling
5.1 Well killing and pulling out production pipe
During well drilling, the bottom hole pressure caused by the well drilling should be 1.05 to 1.10 times of the current formation pressure. After well drilling, pull out the production pipe. 5.2 Leakage test of tubing and casing
In order to avoid the sand mortar returning to the surface and burying the pipe during the sand prevention process, the tubing and casing should be tested for leakage before construction. 5.3 Sand surface detection and sand flushing
Sand surface detection and sand flushing shall be carried out in accordance with SY5587.5. 5.4 Well cleaning and casing scraping
Well cleaning and casing scraping shall be carried out in accordance with SY/T5587.16. 5.5 Blast hole flushing
The blast hole flusher is lowered to 4m below the bottom of the oil layer, and the pipeline is observed to be unobstructed in positive circulation. The ball is dropped to test the pressure of 6MTa. After the leather cup is confirmed to be sealed, it is lifted to the bottom of the oil layer for flushing. See Table 1 for the parameters of blasthole flushing. Table 1 Parameters of blasthole flushing
Flushing method
Downward and upward stop cycle
Length of each flushing section
0.3 --t.5
Flushing plate
0 -- 50Kh
Flushing time
SY/T5339-2000
When flushing to the top of the oil layer, lift the soil by 5m, test the pressure at 6MP, check the sealing of the leather cup again, open the buffer, clean the wellbore, and replace the pressure liquid with performance that meets the design requirements. Then, slowly pull out the blasthole flusher and carefully check the leather cup. 5.6 Verify the sand surface
Use a sand pipe to verify the sand surface. If it does not meet the design requirements, it is still necessary to flush the sand to meet the requirements. 5.7 Complete the construction string of sand control
Sand control in the whole well, the tail of the oil pipe is lowered to 5-20m above the top of the oil layer (5-10m is recommended for the 7in casing hip. 10-20m is recommended for the 5in casing); segmented sand control, the sand control string with packer is lowered according to the design requirements. 6 Sand control construction procedures
6.1 Arrange the construction site and connect the manifold
Prepare the marrow, prepare the fluid, arrange the construction vehicles, and connect the backwash pipelines of the construction inlet and outlet manifolds according to the construction design requirements. 6.2 Equipment test run and pipeline pressure test
Test the ground equipment to ensure normal operation, and the gates and pipelines should be unobstructed. The test pressure value is 1.5 times the design construction pressure, and no leakage is considered a closure.
6.1 Squeeze pre-fluid
6.3.1 Test squeeze
Open the casing gate, inject sand-carrying fluid into the tubing, fill the well casing, close the casing gate, and test squeeze. When the displacement does not meet the design requirements, it is necessary to consider additional injection measures.
6.3.2 Correction
After the trial squeeze reaches the design requirements. Squeeze pre-fluid according to the design requirements. 6.4 Sand filling construction
6.4.1 After squeezing the pre-fluid sheet, add the filling sand to the sand mixing truck according to the designed sand-carrying ratio and mix it with the sand-carrying fluid, and pump it into the formation evenly. 6.4.2 During the sand filling construction process, record the sand-carrying fluid displacement, construction pump pressure, sand-carrying ratio and other parameters every 3 minutes. 6,4.3 During the sand filling construction process, the designed displacement and sand-carrying ratio should be ensured to be evenly matched, and the pressure changes should be observed at any time. It is strictly forbidden to stop the pump when the sand filling pressure does not exceed the designed maximum pressure.
6.5 Displacement
6.5.1 After squeezing out the sand, continue squeezing out the displacement fluid, the amount of which is 1.0 to 1.3 times the volume of the construction string and the surface manifold. 6.5, 2 For the pieces that need to be plugged, the sand ratio should be increased in the later stage of the sand filling construction, and the displacement should be reduced until the pump is pumped. The operation should be continuous and the measurement should be accurate.
6.6 Backwashingwww.bzxz.net
6.6.1 During the squeezing or displacement process, the pump pressure should be stopped immediately when the design maximum pressure is reached, and backwashing should be performed. 6.6.2 At the beginning of backwashing, use a small displacement to push through. After the oil pipe returns normal liquid, gradually increase the backwashing displacement, and control the oil pipe outlet at the same time so that the outlet displacement is less than the displacement displacement.
6.6.3 Backwashing must be thorough, until there is no sand at the backwash outlet on the first day of the test, and the amount of backwashing liquid used should be at least twice the volume of the construction string. 6.6.4 The consolidation sand backwashed out should be collected and measured to calculate the actual amount of sand filled. 6.6.5 If backwashing is not smooth, the movable pipe machine should be lifted in time and the blockage should be handled in time until it is unblocked. It is strictly forbidden to wash and clean directly. 6, 6.6 The original data should be recorded during construction. 6.7 Preparation for production
6.7.1 Backwashing, 1 lift 3 to 5 pipes, close the casing valve, install the pressure gauge, observe the pressure change, and wait for solidification. 6.7.2 Wait for solidification for 48 to 72 hours and then lift and explore the sand surface. 6.7.3 Lower the drill bit to drill plugs and follow the drilling plug operation procedures. During the drilling plugging process, observe the return of the outlet at any time and record the quantity. 6.7.4 According to the requirements of the well repair service, the production string should be put into production. The first two uses after production should be continuously produced to ensure the discharge of the well viscera. 4
Quality Control
SY/T 5339--2000
7.1 To ensure that the quality of sand control construction meets the design requirements, each process should be subject to quality inspection. 7.2 After each process is inspected, the quality inspection card should be filled in carefully. 7.3 After the sand control operation is completed, the sand control construction and sand control effect shall be evaluated technically and effectively. The artificial wall foundation protection effect of single well, block and the entire oil field shall be evaluated according to the provisions of SY5183. 8 Summary of sand control construction
The construction unit shall timely prepare the summary of sand control construction, and archive it after review according to the technical system. The summary format is shown in Appendix E (Suggested Appendix)
9 Health, safety and environmental protection requirements
The requirements for health, safety and environmental protection shall be implemented in accordance with SY/T6362. The design (scheme) is now sent to you. Entrustment requirements: Receiving unit comments: Entruster Receiving unit SY/T 5339—2000 Appendix A (shown in Appendix) Sand control well design entrustment form Sand control well design entrustment and design (scheme) entrust your unit. Please entrust your unit with the design (scheme) after receiving the entrustment and geological design.
Design completed by Ouchi Masayuki (Party
Signature of the authorized reviewer:
Seal of the authorized unit:
Date of authorization
Date of acceptance
Contact number
Contact number
Format of design document
SY/T 53392000
Appendix B
(Suggested appendix)
Format of design document for sand control technology of artificial well wall
Printing design document adopts A4 The size of the standard paper. Cover of the design book
The cover format of the design book is shown in Figure B1.
Min Gao Nei Gao is the inner self-centered
Design unit:
Designer:
Artificial well wall sand control technology design
Oilfield (Petroleum Pipeline Bureau)
Cover format of the design book
The design format of the fan page is shown in Figure R2.
Review and approval:
Approval opinion:
Party A's approval opinion:
Construction department feedback:
SY/T 5339—2000
Design format of warehouse
B4 Design book format
, Process technology optimization selection
2. Construction parameter selection and steps
Material name
Connecting ground pipeline pressure test
Cleaning anti-swelling liquid
Sand carrying liquid
Sand carrying blanket
Sand carrying liquid
Sand bombing liquid
Displacing liquid
3. Construction raw materials
SY/T 5339—2000
Table B2
Construction liquid
Construction steps and parameters
Table B3 Construction raw materials table
Sand filling quantity
Sand carrying ratio
Total liquid volume
Quality index requirements
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