SY 6354-1998 Safety technical regulations for heavy oil thermal recovery by steam injection
Some standard content:
People's Republic of China Petroleum and Natural Gas Industry Standard SY 6354-1998
Safety technology rules for steam injection producing heayy oil1998-06-23 Issued
China National Petroleum Corporation
1998-11-01 Implementation
SY6354-1998
With the expansion of steam injection thermal production and the in-depth development of technology, the standardization of its safety technology is imperative. This standard takes into account the characteristics of heavy oil thermal production and makes unified requirements for safety technology in the production process. This standard is proposed and approved by the Petroleum Industry Safety Professional Standardization Technical Committee. This standard is originated from: Shuguang Oil Production Plant and Safety Supervision Department of Liaohe Petroleum Exploration Bureau. Drafters of this standard are Han Yongxue, Zhu Ting, Li Tanyao, Geng Xinsheng, Zhang Ruohuohuai, Wang Haoliang.|tt||Petroleum and Natural Gas Industry Standard of the People's Republic of China Safety Technology Rules for Steam Injection Producing Heavy OilSY 6354-1998
This standard specifies the safety technology requirements for surface steam injection system, oil production and gathering, thermal production operation, high temperature and high pressure test, and production increase measures in steam injection thermal production of heavy oil.
This standard is applicable to equipment, wells, downhole tools, steam production, thermal production operations and measures used in steam injection production of heavy oil onshore under rated working pressure less than or equal to 18.1MPs and rated working pressure less than or equal to 357T. 2 Referenced Standards
The provisions contained in the following standards are incorporated into the text of this standard by citing them in this standard. When this standard is published, the versions shown are valid: All standards are subject to revision and parties using this standard should explore the possibility of using the latest editions of the following standards. GI3/T4272—1992General technical rules for thermal insulation of equipment and pipelinesGH/T8174—1987Testing and evaluation of thermal insulation effect of equipment and pipelinesSY0027—94Current design standard for heavy oil gathering and hot steam injection systemSY/T0422—97Specification and acceptance standard for oilfield gathering and transportation pipelineSY/T4041-95Specification for installation and acceptance of special wet steam generator for oilSY/T5324-94Prestressed insulated oil pipes
SY/T5328—1996Wellhead equipment for thermal recovery
SY/T 5587.1---93
SY/T 5587.2—93
Routine well repair work for oil and water wells
Procedure for semi-adjustment of water injection
Routine well repair work for oil and water wells
Routine well repair work for water injection wells
SY/T 5587.3 93
SY/T 5587.4--93
SY/T 5587.5
Regular well repair for oil and water wells
Conventional well repair for oil and water wells
SY/T 5587.6—93
Regular well repair for oil and water wells
SY/T 5587.7—93
Conventional well repair for oil and water wells
SY/T 5587.8—93
SY/I 5587.9—93
Conventional well repair for oil and water wells
SY/T 5587.10-—93
Regular well repair for oil and water wells
SY/T 5587.11—93
Routine well repair operation for oil and water wells
SY/T5587.12—93Routine well repair operation for oil and water wellsSY/T 5587.1393
Routine well repair operation for oil and water wellsSY/T5587.14-—93Routine well repair operation for oil and water wellsSY/T5587.15—93Routine well repair operation for oil and water wellsNo-pressure operation process specification
Well pressure replacement and blowout operation specification
Oil layer casing packer leak detection operation procedure
Oil well sand surface exploration and sand flushing operation specification
Operation specification for tearing and swearing
Operation specification for hospital wells
Operation specification for finding strings, sealing strings, and verifying and applying
Replacing wellhead Device operation procedures
Hydraulic sandblasting perforation operation procedures
Drillable special spacer drilling and milling process
Pushing oil system fishing operation method
And small falling objects sweeping and fishing operation method
Cement plug injection operation procedures
Drilling cement plug operation procedures
SY/75.587.16-93 Oil and water routine repair bucket operation well clearing and scraping casing price industry regulations
SY/T5587.17-93 Oil and water well routine repair and lifting operation rope falling objects operation procedures
SY/T 5587.18-93 Oil and water belt repair and lifting operation China National Petroleum Corporation 1998-06-23 approved drillable bridge plug drilling and milling operation procedures
1998-11-01 implementation
SY 6354-1998
SY/T5587.19-94 Oil and water well routine repair operation salvage pipe and other objects technology practice SY/T 5587.20--94 Oil and water well routine repair and lifting operation fighting rod and other objects technology practice SY5727-1995 Underground operation well site electricity safety requirements SY5854-93 Oil dedicated wet steam generator safety regulations SY/T5991-94 Casing, tubing and conveying steel pipe thread protector SY6023-94 Shibo underground operation team safety production inspection regulations SY6024-94 Oilfield dedicated wet steam generator safety operation procedures SY/T SY/T 6081-94 Specification for the design and preparation of oil production engineering schemesSY/T 6089-94 Hot steam spring spitting operation proceduresSY1 Engineering 6120--1995 Technical regulations for blowout prevention of oil wells5 Steam injection well parameter testing and steam absorption surface interpretation methodSY/T 6130-1995
SY61861996 Safety regulations for petroleum and natural gas pipelines3 Ground steam injection system
3.1 Sealing and pressure level
3.1.1 The ground steam injection system includes: oil-specific wet steam generator, steam injection pipeline, etc. 3.1.2 The design, construction and use of the ground steam injection system should be at the same pressure level. 3.2 Special steam generator for oil field
3.2.1 The design, manufacture, installation, repair, use management, regular inspection and other safety regulations of special wet steam generator for oil field (hereinafter referred to as generator) shall be implemented in accordance with SY 5851. 3.2.2 The installation, test, trial operation and acceptance of the generator shall be implemented in accordance with SY/T.4041. 3.2.3 The safety operations such as generator startup, operation, shutdown and accident handling shall be implemented in accordance with SY6024. 3.2.4 The transportation of the generator shall generally be implemented in accordance with the relevant regulations on automobile transportation of large goods. 3.3 Steam injection pipeline
3.3.1 The design of the steam injection pipeline shall be undertaken by a unit with corresponding design qualifications. 3.3.2 The design of the steam injection pipeline shall comply with the requirements of 5Y 0027. 3.3.3 The construction team of the steam injection pipeline shall have the qualification of high-speed pipeline construction. 3.3.4 The construction and acceptance of steam injection pipelines shall be carried out in accordance with the provisions of SY/T0422. 3.3.5. The inspection of the insulation of ground steam injection pipelines shall be carried out in accordance with the provisions of GB/T8174. 3.3.6 The connection between the ground steam injection pipeline and the thermal recovery wellhead shall eliminate the influence of tension. 3.3.7 The safety requirements for steam injection in the ground steam injection pipeline shall be carried out in accordance with the provisions of 5.2 of SY/T6089-94. 3.3.8 The use of steam injection pipelines shall be stopped if there are any of the following problems: a) The steam injection pipeline is uniformly corroded, worn, and the wall thickness is less than the allowable thickness; b) The steam injection pipeline is seriously damaged; c) The compensator on the steam injection pipeline does not meet the requirements of SY/T 0422-97 after inspection: The insulation structure of the steam injection pipeline has been damaged, and the heat loss does not meet the requirements of GB/T4272. d) The connectors of the ground steam injection pipeline shall meet the needs of steam injection production. 3.3.9
The inspection of the steam injection valve shall be carried out in accordance with the provisions of 3.4 of SY/T 0422-97. The installation of the steam injection valve shall be carried out in accordance with the provisions of SY/T 0422-9745.6. 3.3.11
The steam injection valve shall not be used for flow limiting. The opening and closing of the steam injection valve shall be smooth, and the operator shall stand on the side of the valve body. The steam injection pipe network shall not be damaged during the maintenance of the steam injection valve. 3.3.14
The steam injection valve shall be stopped if it has the following conditions after inspection: 3.3.15
SY 6354-199B
a) The pressure end of the valve body is corroded and worn, and the thickness is less than the designed thickness; b) The lubricant is seriously damaged, affecting the normal steam injection production. 4 Oil production and collection
4.1 Oil production
4,1.1 The sequence of steam injection and blowout shall be carried out in accordance with the provisions of 4.4 of SY/T G089-94. 4.1,2 When the pumping well with self-flowing ability is shut down, the pump head should be stopped at the upper dead center and the packing should be tightened. +.1.3 The pump is turned on and the steam drive is effective. The anti-blowout box should be equipped with a high-temperature wear-resistant disc. 4.1.4 When the outlet temperature is higher than the rated temperature of the pump, it should be put into the tank for production. 4.2 Delivery
4.2.1 The selection of heating method for heavy oil transportation shall be carried out in accordance with the provisions of 4.5 of SY 0027-94. 4.2.2 Safety in the design, construction, use, burial and construction of heavy oil pipelines shall comply with the provisions of SY6186.
5 Thermal recovery operations
5.1 General provisions
5.1.1 Casings and wellhead devices of heavy oil thermal recovery wells shall be repaired and pressure tested with clean water according to design requirements. 5.1.2 Conventional well repair operations after heavy oil thermal recovery shall comply with the provisions of SY/T 5587.1~5587.20. 5.1.3
Operation sites, equipment, lighting, workshop operations and safety management of heavy oil wells shall comply with the provisions of SY6023. 5.1.4
Electricity for oil transfer operations shall comply with the provisions of SY5727. 5.1.5 The working procedures and safety requirements of steam injection well parts shall be implemented in accordance with the provisions of SY/T 6089. 5.2 Wellhead equipment, downhole tools and operations
5.2.1 Thermal recovery parallel port equipment
5.2.1.1 The thermal recovery parallel port equipment shall meet the needs of thermal development in Chouchi Oilfield. 5.2.1.2 The manufacture, testing, inspection, packaging, transportation and storage of thermal recovery parallel port equipment shall be implemented in accordance with the provisions of SY/T5328. 5.2.1.3 The thermal recovery open port equipment (including repeated use) shall be tested for pressure with clean water as a whole. The test pressure shall be 1.5 times the working pressure. The pressure shall be stabilized for more than 5minin, without leakage, and the reverse pressure test shall still be qualified before use. 5.2.1.4 The valves of the thermal recovery folding device shall be flexible to open and close, and the total smoke shall be tested and qualified as required. 5.2.1.3 When dismantling the wellhead device, there should be no excess bed in the well casing. 5.2.1.6 When dismantling the ground steam injection pipeline, there should be no excess bed. 5.2.2 Prestressed thermal insulation oil pipe production and product quality inspection shall be carried out in accordance with the provisions of SY/T5324. 5.2.2.2 The transportation and storage of prestressed thermal insulation oil pipes during use shall be carried out in accordance with the provisions of 6.3.8.4 of SY/T5324-94. 5.2.2.3 When the prestressed thermal insulation oil pipe is lowered, high-humidity sealing grease shall be applied to the threaded part. 5.2.2.4 The thread protector shall be used when lifting and lowering the prestressed thermal insulation oil pipe. The thread protector shall be in accordance with the provisions of SY/T 5991. 5.2.2.5
More, 2.2.6 Stress insulation shaft pipes with any of the following conditions shall not be used; a)
The apparent thermal conductivity is higher than 1.2 times of the new pipe;
Straightness, local tendency exceeds 0.1%, and the total length exceeds 0.6%; h)
Thread sampling inspection fails;
) The standard female bar gauge cannot pass through it.
5.2.3 Telescopic pipe
The telescopic pipe shall meet the mechanical properties required by various working conditions of the steam injection well and the sealing performance under high temperature and high pressure conditions. 5.2.3.1
SY 6354-1998
5.2.3.2 The effective telescopic extension of the selected telescopic pipe shall be equal to the calculated value of the pipe string extension and located in a reasonable position. 5.2.3.3 The expansion tube should be stored on the tool rack, should not be heavy, and should be protected from rain and contact with corrosive substances such as acid and alkali. 5.2.4 Thermal Packer
5.2.4.1 The performance of the thermal recovery packer should meet the design requirements. It should be qualified in the inspection and have a factory certificate. 5.2.4.2 The operation of setting and unsealing of mechanical thermal recovery packers should comply with the provisions of 5Y/T6089. 5.2.4.3 The operation of thermal recovery packer should comply with the relevant provisions of SY/T5587.20: 5.2.4.4 The speed of thermal recovery packer downhole should be implemented in accordance with the provisions of 4.2.3 of SY/T6089-94. 5.2.4.5 The thermal recovery packer seal should not be downhole if it is scratched or deformed. 5.2.4.6 The replacement of seals of mechanical and thermal sensitive thermal recovery packers shall not exceed the number of times, and the thermal expansion type thermal recovery packer can only be used once.
5.3 Treatment of blowout
5.3.1 During the oil adjustment and thermal recovery underground operation, the prevention of blowout shall be carried out according to the provisions of SY/T6120. 5.3,2 The thermal recovery wellhead equipment shall be knocked and rectified under pressure during the steam injection process. 5.3.3 During the small steam injection operation, the positive circulation balance well should be opened to avoid the vaporization of the well killing fluid. 5.3.4 Start the steam injection with a packer, and seal it first. 5.3.5 During the operation of the lower system pumping, attention should be paid to the changes in the liquid level at the river mouth. When the liquid level drops, the non-liquid should be pressed in time; when the overflow speed of the stop mouth accelerates, anti-blowout measures should be taken immediately. 5.3.6 The lower pumping industry should be continuously constructed. When it is necessary to stop work, a control valve should be installed. 5.3.7 During the steam injection, attention should be paid to the relevant oil production and transfer liquid volume, overflow, and pressure to prevent blowout. 6 High temperature and high pressure test
6.1 General provisions
6.1.1 The test items should be determined in the geological and process plans, and the test should be based on the test notice. 6.1.2 The road to the well site to be tested should be solid and flat, and the site should be able to park engineering vehicles, cranes, instruments, etc. at the same time, and there should be a self-powered supply for testing.
.1.3 The wind force during the test construction should not exceed level 5 and should be carried out during the day. 6.1.4 The steam injection production valve and the main valve should not be closed during the test construction. 6.1.5 The test construction personnel must wear anti-scalding clothes, gloves, work shoes and protective glasses. 6.2 Simultaneous test
.2.1 The blowout preventer, well entry wire, cable, instruments and instruments should meet the test conditions. 6.2.2 Simultaneous tests should be carried out in accordance with the provisions of SY/T6130. 7 Production increase measures
7.1 General provisions
7.1.1 Production increase measures include: steam injection, sand control, plugging removal, profile adjustment, river steam expansion additives and river selection and production. 7.1.2 All downhole tools should match the grade of the steam injection string. 7.1.3 Chemical products that have passed the inspection by the department with national certification can be used. 7.1.4 Chemical products used in the well should be stable, non-flammable and non-explosive under the conditions of the well. 7.1.5 Chemical products with excessive chlorine and sulfur content should not be used. 7.1.6 The fluid composition of the injection fluid should match the production layer and can be used after passing the inspection: 7.1.7 The design of measures should be carried out in accordance with the provisions of SY/T 6081. 7.1.8 The construction design shall have safety technical plans. 7.2 On-site construction
SY 63541998
7.2.1 The construction site shall implement various safety production measures according to the design requirements. 7.2.2 The ground and port connecting pipes and high-pressure manifolds must be in place and have reliable reinforcement measures. When overpressure [25MPa or more] is applied, protective measures shall be taken for the island and oil. 7.2.3
7.2.4 The cut-off pressure of the safety pin of the high-pressure pump shall not exceed the rated pressure, and shall not be greater than 1.5 times the design construction pressure. 7.2.5
When equipment fails and pipes leak, it should not be processed under pressure. The high-pressure pipelines, elbows, valves and flexible joints equipped with the high-pressure pump truck shall be subjected to non-destructive testing as required. On-site construction personnel should wear labor protection products. 7.2.75.2 Wellhead equipment, downhole tools and operation
5.2.1 Thermal wellhead equipment
5.2.1.1 Thermal wellhead equipment should meet the needs of thermal development in Chouchi Oilfield. 5.2.1.2 The manufacture, test, inspection, packaging, transportation and storage of thermal wellhead pipes should be carried out in accordance with SY/T5328. 5.2.1.3 The thermal wellhead (including repeated use) should be tested with clean water as a whole. The test pressure should be 1.5 times the working pressure. The pressure should be maintained at more than 5minin, without leakage. It can only be used if the reverse pressure test is still qualified. 5.2.1.4 The valves of the thermal wellhead equipment should be flexible to open and close, and the total smoke should be tested and qualified as required. 5.2.1.3 When dismantling the thermal wellhead equipment, there should be no excess bed in the wellhead. 5.2.1.6 There should be no excess when dismantling the ground steam injection pipeline. 5.2.2 Prestressed heat insulation oil pipe
S.2.2.1 The production and product quality inspection of prestressed heat insulation oil pipe shall be carried out in accordance with the provisions of SY/T5324. 5.2.2.2 The transportation and storage of prestressed heat insulation oil pipe during use shall be carried out in accordance with the provisions of 6.3.8.4 of SY/T5324-94. 5.2.2.3 When the prestressed heat insulation oil pipe is lowered, high-humidity sealing grease shall be applied to the threaded part. 5.2.2.4 The thread protector shall be used when the prestressed heat insulation oil pipe is lowered. The thread protector shall be in accordance with the provisions of SY/T 5991. 5.2.2.5
More, 2.2.6 Stress insulation shaft pipes with any of the following conditions shall not be used; a)
The apparent thermal conductivity is higher than 1.2 times of the new pipe;
Straightness, local tendency exceeds 0.1%, and the total length exceeds 0.6%; h)
Thread sampling inspection fails;
) The standard female bar gauge cannot pass through it.
5.2.3 Telescopic pipe
The telescopic pipe shall meet the mechanical properties required by various working conditions of the steam injection well and the sealing performance under high temperature and high pressure conditions. 5.2.3.1
SY 6354-1998
5.2.3.2 The effective telescopic extension of the selected telescopic pipe shall be equal to the calculated value of the pipe string extension and located in a reasonable position. 5.2.3.3 The expansion tube should be stored on the tool rack, should not be heavy, and should be protected from rain and contact with corrosive substances such as acid and alkali. 5.2.4 Thermal Packer
5.2.4.1 The performance of the thermal recovery packer should meet the design requirements. It should be qualified in the inspection and have a factory certificate. 5.2.4.2 The operation of setting and unsealing of mechanical thermal recovery packers should comply with the provisions of 5Y/T6089. 5.2.4.3 The operation of thermal recovery packer should comply with the relevant provisions of SY/T5587.20: 5.2.4.4 The speed of thermal recovery packer downhole should be implemented in accordance with the provisions of 4.2.3 of SY/T6089-94. 5.2.4.5 The thermal recovery packer seal should not be downhole if it is scratched or deformed. 5.2.4.6 The replacement of seals of mechanical and thermal sensitive thermal recovery packers shall not exceed the number of times, and the thermal expansion type thermal recovery packer can only be used once.
5.3 Treatment of blowout
5.3.1 During the oil adjustment and thermal recovery underground operation, the prevention of blowout shall be carried out according to the provisions of SY/T6120. 5.3,2 The thermal recovery wellhead equipment shall be knocked and rectified under pressure during the steam injection process. 5.3.3 During the small steam injection operation, the positive circulation balance well should be opened to avoid the vaporization of the well killing fluid. 5.3.4 Start the steam injection with a packer, and seal it first. 5.3.5 During the operation of the lower system pumping, attention should be paid to the changes in the liquid level at the river mouth. When the liquid level drops, the non-liquid should be pressed in time; when the overflow speed of the stop mouth accelerates, anti-blowout measures should be taken immediately. 5.3.6 The lower pumping industry should be continuously constructed. When it is necessary to stop work, a control valve should be installed. 5.3.7 During the steam injection, attention should be paid to the relevant oil production and transfer liquid volume, overflow, and pressure to prevent blowout. 6 High temperature and high pressure test
6.1 General provisions
6.1.1 The test items should be determined in the geological and process plans, and the test should be based on the test notice. 6.1.2 The road to the well site to be tested should be solid and flat, and the site should be able to park engineering vehicles, cranes, instruments, etc. at the same time, and there should be a self-powered supply for testing.
.1.3 The wind force during the test construction should not exceed level 5 and should be carried out during the day. 6.1.4 The steam injection production valve and the main valve should not be closed during the test construction. 6.1.5 The test construction personnel must wear anti-scalding clothes, gloves, work shoes and protective glasses. 6.2 Simultaneous test
.2.1 The blowout preventer, well entry wire, cable, instruments and instruments should meet the test conditions. 6.2.2 Simultaneous tests should be carried out in accordance with the provisions of SY/T6130. 7 Production increase measures
7.1 General provisions
7.1.1 Production increase measures include: steam injection, sand control, plugging removal, profile adjustment, river steam expansion additives and river selection and production. 7.1.2 All downhole tools should match the grade of the steam injection string. 7.1.3 Chemical products that have passed the inspection by the department with national certification can be used. 7.1.4 Chemical products used in the well should be stable, non-flammable and non-explosive under the conditions of the well. 7.1.5 Chemical products with excessive chlorine and sulfur content should not be used. 7.1.6 The fluid composition of the injection fluid should match the production layer and can be used after passing the inspection: 7.1.7 The design of measures should be carried out in accordance with the provisions of SY/T 6081. 7.1.8 The construction design shall have safety technical plans. 7.2 On-site construction
SY 63541998
7.2.1 The construction site shall implement various safety production measures according to the design requirements. 7.2.2 The ground and port connecting pipes and high-pressure manifolds must be in place and have reliable reinforcement measures. When overpressure [25MPa or more] is applied, protective measures shall be taken for the island and oil. 7.2.3
7.2.4 The cut-off pressure of the safety pin of the high-pressure pump shall not exceed the rated pressure, and shall not be greater than 1.5 times the design construction pressure. 7.2.5
When equipment fails and pipes leak, it should not be processed under pressure. The high-pressure pipelines, elbows, valves and flexible joints equipped with the high-pressure pump truck shall be subjected to non-destructive testing as required. On-site construction personnel should wear labor protection products. 7.2.75.2 Wellhead equipment, downhole tools and operation
5.2.1 Thermal wellhead equipment
5.2.1.1 Thermal wellhead equipment should meet the needs of thermal development in Chouchi Oilfield. 5.2.1.2 The manufacture, test, inspection, packaging, transportation and storage of thermal wellhead pipes should be carried out in accordance with SY/T5328. 5.2.1.3 The thermal wellhead (including repeated use) should be tested with clean water as a whole. The test pressure should be 1.5 times the working pressure. The pressure should be maintained at more than 5minin, without leakage. It can only be used if the reverse pressure test is still qualified. 5.2.1.4 The valves of the thermal wellhead equipment should be flexible to open and close, and the total smoke should be tested and qualified as required. 5.2.1.3 When dismantling the thermal wellhead equipment, there should be no excess bed in the wellhead. 5.2.1.6 There should be no excess when dismantling the ground steam injection pipeline. 5.2.2 Prestressed heat insulation oil pipe
S.2.2.1 The production and product quality inspection of prestressed heat insulation oil pipe shall be carried out in accordance with the provisions of SY/T5324. 5.2.2.2 The transportation and storage of prestressed heat insulation oil pipe during use shall be carried out in accordance with the provisions of 6.3.8.4 of SY/T5324-94. 5.2.2.3 When the prestressed heat insulation oil pipe is lowered, high-humidity sealing grease shall be applied to the threaded part. 5.2.2.4 The thread protector shall be used when the prestressed heat insulation oil pipe is lowered. The thread protector shall be in accordance with the provisions of SY/T 5991. 5.2.2.5
More, 2.2.6 Stress insulation shaft pipes with any of the following conditions shall not be used; a)
The apparent thermal conductivity is higher than 1.2 times of the new pipe;
Straightness, local tendency exceeds 0.1%, and the total length exceeds 0.6%; h)
Thread sampling inspection fails;
) The standard female bar gauge cannot pass through it.
5.2.3 Telescopic pipe
The telescopic pipe shall meet the mechanical properties required by various working conditions of the steam injection well and the sealing performance under high temperature and high pressure conditions. 5.2.3.1
SY 6354-1998
5.2.3.2 The effective telescopic extension of the selected telescopic pipe shall be equal to the calculated value of the pipe string extension and located in a reasonable position. 5.2.3.3 The expansion tube should be stored on the tool rack, should not be heavy, and should be protected from rain and contact with corrosive substances such as acid and alkali. 5.2.4 Thermal Packer wwW.bzxz.Net
5.2.4.1 The performance of the thermal recovery packer should meet the design requirements. It should be qualified in the inspection and have a factory certificate. 5.2.4.2 The operation of setting and unsealing of mechanical thermal recovery packers should comply with the provisions of 5Y/T6089. 5.2.4.3 The operation of thermal recovery packer should comply with the relevant provisions of SY/T5587.20: 5.2.4.4 The speed of thermal recovery packer downhole should be implemented in accordance with the provisions of 4.2.3 of SY/T6089-94. 5.2.4.5 The thermal recovery packer seal should not be downhole if it is scratched or deformed. 5.2.4.6 The replacement of seals of mechanical and thermal sensitive thermal recovery packers shall not exceed the number of times, and the thermal expansion type thermal recovery packer can only be used once.
5.3 Treatment of blowout
5.3.1 During the oil adjustment and thermal recovery underground operation, the prevention of blowout shall be carried out according to the provisions of SY/T6120. 5.3,2 The thermal recovery wellhead equipment shall be knocked and rectified under pressure during the steam injection process. 5.3.3 During the small steam injection operation, the positive circulation balance well should be opened to avoid the vaporization of the well killing fluid. 5.3.4 Start the steam injection with a packer, and seal it first. 5.3.5 During the operation of the lower system pumping, attention should be paid to the changes in the liquid level at the river mouth. When the liquid level drops, the non-liquid should be pressed in time; when the overflow speed of the stop mouth accelerates, anti-blowout measures should be taken immediately. 5.3.6 The lower pumping industry should be continuously constructed. When it is necessary to stop work, a control valve should be installed. 5.3.7 During the steam injection, attention should be paid to the relevant oil production and transfer liquid volume, overflow, and pressure to prevent blowout. 6 High temperature and high pressure test
6.1 General provisions
6.1.1 The test items should be determined in the geological and process plans, and the test should be based on the test notice. 6.1.2 The road to the well site to be tested should be solid and flat, and the site should be able to park engineering vehicles, cranes, instruments, etc. at the same time, and there should be a self-powered supply for testing.
.1.3 The wind force during the test construction should not exceed level 5 and should be carried out during the day. 6.1.4 The steam injection production valve and the main valve should not be closed during the test construction. 6.1.5 The test construction personnel must wear anti-scalding clothes, gloves, work shoes and protective glasses. 6.2 Simultaneous test
.2.1 The blowout preventer, well entry wire, cable, instruments and instruments should meet the test conditions. 6.2.2 Simultaneous tests should be carried out in accordance with the provisions of SY/T6130. 7 Production increase measures
7.1 General provisions
7.1.1 Production increase measures include: steam injection, sand control, plugging removal, profile adjustment, river steam expansion additives and river selection and production. 7.1.2 All downhole tools should match the grade of the steam injection string. 7.1.3 Chemical products that have passed the inspection by the department with national certification can be used. 7.1.4 Chemical products used in the well should be stable, non-flammable and non-explosive under the conditions of the well. 7.1.5 Chemical products with excessive chlorine and sulfur content should not be used. 7.1.6 The fluid composition of the injection fluid should match the production layer and can be used after passing the inspection: 7.1.7 The design of measures should be carried out in accordance with the provisions of SY/T 6081. 7.1.8 The construction design shall have safety technical plans. 7.2 On-site construction
SY 63541998
7.2.1 The construction site shall implement various safety production measures according to the design requirements. 7.2.2 The ground and port connecting pipes and high-pressure manifolds must be in place and have reliable reinforcement measures. When overpressure [25MPa or more] is applied, protective measures shall be taken for the island and oil. 7.2.3
7.2.4 The cut-off pressure of the safety pin of the high-pressure pump shall not exceed the rated pressure, and shall not be greater than 1.5 times the design construction pressure. 7.2.5
When equipment fails and pipes leak, it should not be processed under pressure. The high-pressure pipelines, elbows, valves and flexible joints equipped with the high-pressure pump truck shall be subjected to non-destructive testing as required. On-site construction personnel should wear labor protection products. 7.2.76 The replacement seals of mechanical and thermal-sensitive thermal recovery packers shall not be used more than once, and thermal expansion thermal recovery packers can only be used once.
5.3 Treatment of co-blowout
5.3.1 During the oil adjustment thermal recovery downhole operation, the prevention of blowout shall be carried out in accordance with the provisions of SY/T6120. 5.3,2 The thermal recovery wellhead installation shall be knocked and rectified under pressure during the steam injection process. 5.3.3 During the small steam injection operation, the positive circulation balance well pressure should be opened to avoid the vaporization of the well pressure fluid. 5.3.4 Start the steam injection with the packer, and seal it first. 5.3.5 During the lower system transfer operation, pay attention to the changes in the liquid level at the river mouth. When the liquid level drops, it should be promptly pressurized to prevent liquid; when the overflow speed of the stop mouth accelerates, anti-blowout measures should be taken immediately. 5.3.6 The lower pumping industry should be continuously constructed. When it is necessary to stop work, a control valve should be installed. 5.3.7 When injecting steam, attention should be paid to the relevant oil production and conversion liquid volume, overflow, and pressure to prevent blowout. 6 High temperature and high pressure test
6.1 General provisions
6.1.1 The test items should be determined in the geological and process plans, and the test should be based on the test notice. 6.1.2 The road to the well site of the tested well should be solid and flat, and the site should be able to park engineering vehicles, cranes, instruments, etc. at the same time, and there should be a self-powered supply for testing.
.1.3 The wind force during the test construction should not exceed level 5 and should be carried out during the day. 6.1.4 The steam injection production valve and the main valve should not be closed during the test construction. 6.1.5 The test construction personnel must wear anti-scalding clothes, gloves, work shoes and protective glasses. 6.2 Simple test
.2.1 The blowout preventer, well entry wire, cable, instruments and instruments should meet the requirements of the test conditions. 6.2.2 The test of the well shall be carried out in accordance with the provisions of SY/T6130. 7 Production increase measures
7.1 General provisions
7.1.1 Production increase measures include: steam injection, sand control, plugging removal, profile adjustment, river steam expansion additives and river selection and production. 7.1.2 All downhole tools shall match the grade of the steam injection string. 7.1.3 Chemical products that have passed the test of the department with national certification and testing qualifications can be used in the well. 7.1.4 The chemical products used in the well shall be stable, non-flammable and non-explosive under the conditions of the well. 7.1.5 Chemical products with excessive chlorine and sulfur content shall not be used in the well. 7.1.6 The fluid composition of the well shall match the production layer and shall be tested and qualified before it can be used in the well: 7.1.7 The design of measures shall be carried out in accordance with the provisions of SY/T 6081. 7.1.8 The construction design shall have safety technical plans. 7.2 On-site construction
SY 63541998
7.2.1 The construction site shall implement various safety production measures according to the design requirements. 7.2.2 The ground and port connecting pipes and high-pressure manifolds must be in place and have reliable reinforcement measures. When overpressure [25MPa or more] is applied, protective measures shall be taken for the island and oil. 7.2.3
7.2.4 The cut-off pressure of the safety pin of the high-pressure pump shall not exceed the rated pressure, and shall not be greater than 1.5 times the design construction pressure. 7.2.5
When equipment fails and pipes leak, it should not be processed under pressure. The high-pressure pipelines, elbows, valves and flexible joints equipped with the high-pressure pump truck shall be subjected to non-destructive testing as required. On-site construction personnel should wear labor protection products. 7.2.76 The replacement seals of mechanical and thermal-sensitive thermal recovery packers shall not be used more than once, and thermal expansion thermal recovery packers can only be used once.
5.3 Treatment of co-blowout
5.3.1 During the oil adjustment thermal recovery downhole operation, the prevention of blowout shall be carried out in accordance with the provisions of SY/T6120. 5.3,2 The thermal recovery wellhead installation shall be knocked and rectified under pressure during the steam injection process. 5.3.3 During the small steam injection operation, the positive circulation balance well pressure should be opened to avoid the vaporization of the well pressure fluid. 5.3.4 Start the steam injection with the packer, and seal it first. 5.3.5 During the lower system transfer operation, pay attention to the changes in the liquid level at the river mouth. When the liquid level drops, it should be promptly pressurized to prevent liquid; when the overflow speed of the stop mouth accelerates, anti-blowout measures should be taken immediately. 5.3.6 The lower pumping industry should be continuously constructed. When it is necessary to stop work, a control valve should be installed. 5.3.7 When injecting steam, attention should be paid to the relevant oil production and conversion liquid volume, overflow, and pressure to prevent blowout. 6 High temperature and high pressure test
6.1 General provisions
6.1.1 The test items should be determined in the geological and process plans, and the test should be based on the test notice. 6.1.2 The road to the well site of the tested well should be solid and flat, and the site should be able to park engineering vehicles, cranes, instruments, etc. at the same time, and there should be a self-powered supply for testing.
.1.3 The wind force during the test construction should not exceed level 5 and should be carried out during the day. 6.1.4 The steam injection production valve and the main valve should not be closed during the test construction. 6.1.5 The test construction personnel must wear anti-scalding clothes, gloves, work shoes and protective glasses. 6.2 Simple test
.2.1 The blowout preventer, well entry wire, cable, instruments and instruments should meet the requirements of the test conditions. 6.2.2 The test of the well shall be carried out in accordance with the provisions of SY/T6130. 7 Production increase measures
7.1 General provisions
7.1.1 Production increase measures include: steam injection, sand control, plugging removal, profile adjustment, river steam expansion additives and river selection and production. 7.1.2 All downhole tools shall match the grade of the steam injection string. 7.1.3 Chemical products that have passed the test of the department with national certification and testing qualifications can be used in the well. 7.1.4 The chemical products used in the well shall be stable, non-flammable and non-explosive under the conditions of the well. 7.1.5 Chemical products with excessive chlorine and sulfur content shall not be used in the well. 7.1.6 The fluid composition of the well shall match the production layer and shall be tested and qualified before it can be used in the well: 7.1.7 The design of measures shall be carried out in accordance with the provisions of SY/T 6081. 7.1.8 The construction design shall have safety technical plans. 7.2 On-site construction
SY 63541998
7.2.1 The construction site shall implement various safety production measures according to the design requirements. 7.2.2 The ground and port connecting pipes and high-pressure manifolds must be in place and have reliable reinforcement measures. When overpressure [25MPa or more] is applied, protective measures shall be taken for the island and oil. 7.2.3
7.2.4 The cut-off pressure of the safety pin of the high-pressure pump shall not exceed the rated pressure, and shall not be greater than 1.5 times the design construction pressure. 7.2.5
When equipment fails and pipes leak, it should not be processed under pressure. The high-pressure pipelines, elbows, valves and flexible joints equipped with the high-pressure pump truck shall be subjected to non-destructive testing as required. On-site construction personnel should wear labor protection products. 7.2.7
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.