SY 0466-1997 Specification for construction and acceptance of natural gas gathering and transmission pipelines
Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of China Specification for construction and acceptance of collection and transportation pipeline of natural gasSY 0466--97Editor: Sichuan Petroleum Administration Bureau Oil and Gas Field Construction Engineering CorporationApproval department: China National Petroleum CorporationPetroleum Industry Press1998BeijingInspection of steel pipes, pipe fittings and valvesInspection of steel pipesInspection of pipe fittings··Inspection of valvesPrefabrication and installation of pipelinesPrefabrication of pipelinesPipeline assemblyAssembly of pipe fittings·3.4 Valve installation
Pipeline welding
Welding process assessment
Welder qualification
Welding materials
Preheating before welding and heat treatment after welding
Weld repair
Weld quality inspection
Weld appearance quality inspection
Non-destructive testing
Pipeline anti-corrosion and patching
Measurement and layout, construction zone cleaning and trench excavation T1
Xie measurement and layout ·
Construction zone cleaning
Trench excavation
Anti-corrosion pipe pulling and pipe laying
Pipeline trenching and backfilling
Hydraulic protection and landform restoration·
Hydraulic protection
Landform restoration|| tt||Pipeline cleaning and pressure testing·
Project acceptance:
Explanation of standard words and phrases
Appendix Explanation of the provisions of the Code for Construction and Acceptance of Natural Gas Gathering and Transportation Pipelines·22
China National Petroleum Corporation Document
[97] CNPC Technical Supervision No. 698
Notice on the approval and release of 35 oil and gas industry standards including the "Technical Standard for Fusion-bonded Epoxy Powder External Coating of Steel Pipelines"
To all relevant units:
The 35 oil and gas industry standards (draft) including the "Technical Standard for Fusion-bonded Epoxy Powder External Coating of Steel Pipelines" have been reviewed and approved and are now approved as oil and gas industry standards for release.
The numbers and names of various industry standards are as follows: No.
SY / T 0315--97
SY/ T 0316-97
SY / T 0317-97
SY/T 0407--97
Technical Standard for External Coating of Fusion-bonded Epoxy Powder for Steel Pipe
Recommended Practice for On-site Inspection of New Line Pipe
Building Code for Saline Soil Areas
Specification for Surface Preparation of Steel Materials before Painting (Replaces SYI4007-86)
SY /T 0419-97
SY /T 0420--97
SY.0422-97
SY /T 0442
SY /T 0448-97
SY/T 0449-97
SY/T 0450-97
SY 0466--97
SY/T 05151997
Specification for the manufacture, installation and inspection of water jacket heating furnaces for oil fields (replacing SYJ4019-
Technical standard for petroleum asphalt anticorrosion layer of buried steel pipelines (replacing SYJ4020-88
SYJ.8—84)
Specification for the construction and acceptance of oil field gathering and transportation pipelines
(replacing SYJ 4022---88,SYJ4009
-86. SY 4061-93)
Technical standard for internal coating of fused epoxy powder for steel pipelines (replacing SYJ4042-89)
Construction and acceptance specification for pressure vessels for oil and gas processing (replacing SYJ4048
Construction and acceptance specification for steel pressure vessels for oil and gas fields (replacing SYJ4049--91)
Key-resistant design specification for buried steel pipelines for oil (gas) (replacing SYJ4050-91)
Construction and acceptance specification for natural gas gathering and transportation pipelines (replacing SY4066--93SY/T
4082-95)
Oil and gas separator specification (replacing SY7515
Tapered cylindrical thread for drilling pumps (replacing SY7T 50201997-
SY 5020-80, SY 5021-80)
Beam pumping unit quality classification (replacing
SYT 5212--1997
SY 5212-87)
SY /T 5332--1997
SY / T 5455---1997
SY/T 5595-1997
SY / T 5599-1997
SY/ T 5675--1997
SY /T 5788.21997
SY T 6187-1997
SY/T 6285--1997
SY /T 6286--1997
SYT 6287--1997
SYT 6288--1997
SY/T 6289-1997
SY / T 6290--1997
SY/T 62911997
SY / T 62921997
SY/T 62931997
SY/T 62941997
Technical specification for onshore two-dimensional geological exploration data processing (replaces SY5332-92)
Technical specification for onshore three-dimensional seismic exploration data acquisition (replaces SY545592)
Oilfield chain and sprocket (replaces SY/T 559593)
Specification for the compilation of geological maps for oil and gas exploration and completion (replaces SY559993)
Specification for the compilation of geological summary reports for oil and gas exploration and completion (replaces SY/T5675)
Specification for gas logging in oil and gas exploration wells (replaces SY/T 5788.293]
Use and scrap conditions of 190 series diesel engines for oil drilling rigs
Evaluation methods for oil and gas reservoirs
Detailed description methods for carbonate reservoirs
Determination methods for oil well production index
Selection methods for drill pipes and drill chains
Technical specifications for continuous electromagnetic surface exploration
Auxiliary data format for land three-dimensional geophysical exploration
Technical specifications for dynamic measurement of global satellite positioning system for petroleum geophysical exploration
Interpretation and quality of test data for oil well testing
Specifications for oil testing work
Field sampling specifications for oil and gas exploration well analysis samples
SY/ T 6295--1997
SY/F 7507--1997
SYT 75081997
Reliability prediction method for oil drilling equipment
Determination of water content in natural gas
Method (replacing SY7507-87)
Determination of total sulfur in liquefied petroleum gas in oil and gas fields
Oxidation microcoulometric method (replacing SY 7508-87
This standard shall come into force on June 1, 1998. China National Petroleum Corporation
December 28, 1997
This specification is edited by Sichuan Petroleum Administration Bureau Oil and Gas Field Construction Engineering Company in conjunction with China National Petroleum Corporation Engineering Technology Research Institute based on the requirements of China National Petroleum Corporation (97) Zhongyou Jijianzi No. 42 document, and revised from the original "Natural Gas Gathering and Transportation Pipeline Construction and Acceptance Specification" SY4066-93. This specification is based on the original specification SY4066-93, and integrates the relevant clauses of the original "Gas Field Well Site Equipment and Pipeline Installation Engineering Construction and Acceptance Specification" SY/T4082-95, and refers to the relevant standards currently in force in the country and the oil industry. During the revision process, the opinions of relevant units and experts were widely solicited through letter review and joint review, striving to achieve advanced technology, economic rationality, and ensure quality: taking into account both the current construction level and the future development direction. This specification has been repeatedly discussed Modification, and finally the Petroleum Engineering Construction Professional Standardization Committee will review and finalize it together with relevant departments.
Authorized by China National Petroleum Corporation, this specification is interpreted by Sichuan Petroleum Administration Bureau Oil and Gas Construction Engineering Corporation. In order to improve the quality of this specification, please pay attention to summarizing experience and accumulating information in the process of implementing this specification, and send relevant opinions and suggestions to the Standard Office of the Technical Supervision Department of Sichuan Petroleum Administration Bureau Oil and Gas Field Construction Engineering Corporation, Neijiang City, Sichuan Province (zip code 641003) at any time for reference in future revisions. The main editor of this specification: Sichuan Petroleum Administration Bureau Oil and Gas Field Construction Engineering Corporation. The participating units of this specification: China National Petroleum Corporation Engineering Technology Research Institute. The main drafters of this specification are Tong Mingshi, Yan Keqin, and Zhu Zhengcheng. 1 General Principles
1.0.1 In order to ensure the quality of natural gas gathering and transmission pipeline projects, ensure pipeline safety and reliability, and reduce project costs, this specification is formulated. 1.0.2 This specification is applicable to the construction and acceptance of natural gas gathering and transmission pipelines with a gas transmission design pressure of 1.6~70MPa.
This specification does not apply to the construction and acceptance of long-distance natural gas pipelines and urban natural gas pipeline networks.
1.0.3 Natural gas gathering and transportation pipelines include the following pipelines: 1 Gas production pipelines, gas gathering branch lines, and gas gathering trunk lines from gas wells to natural gas purification plants or external transmission first stations:
2 Pipelines from gas wells directly to user gate stations: 3 Wellhead gas injection pipelines.
1.0.4 Natural gas gathering and transportation pipelines are divided into medium-pressure pipelines and high-pressure pipelines according to design pressure.
1 Medium-pressure pipelines: 1.6<<10MPa;
2 High-pressure pipelines: 10≤w<70MPa
1.0.5 The construction and acceptance of natural gas gathering and transportation pipelines shall comply with the design requirements, and the design modification shall be subject to the consent of the design unit.
1.0.6 The construction and acceptance of natural gas gathering and transportation pipeline crossing projects shall comply with the current "Petroleum and Natural Gas Pipeline Crossing Project Construction and Acceptance Specification" SY/T4079, and the construction and acceptance of crossing projects shall comply with the current "Petroleum and Natural Gas Pipeline Crossing Project Construction and Acceptance Specification" SY4070. 1.0.7 In addition to complying with this specification, the construction and acceptance of natural gas gathering and transportation pipelines shall also comply with the current national mandatory standards. 2 Inspection of steel pipes, pipe fittings and valves
2.1 Inspection of steel pipes
2.1.1 The specifications and materials of steel pipes must meet the design requirements. Substitute materials should be agreed upon by the design unit and a written document should be issued. 2.1.2 Steel pipes must have a factory quality certificate from the manufacturer, and the content of the quality certificate should be complete.
2.1.3 The outer diameter, wall thickness size deviation and technical requirements of the steel pipe shall comply with the provisions of the relevant national standards or relevant technical requirements. 2.1.4 The steel pipe shall be inspected for appearance before use. Its surface shall be free of defects such as cracks, slag, folding and heavy skin, and there shall be no rust and mechanical damage exceeding the negative deviation of the wall thickness.
Steel pipes shall be re-inspected if any of the following conditions occur: The quality certificate does not match the steel grade of the steel pipe received or there is no steel grade on the steel pipe; the quality certificate data is incomplete or there is doubt about it; the steel pipe is a high-pressure steel pipe,
The re-inspection of high-pressure steel pipes shall be carried out in accordance with the following provisions. All steel pipes shall be numbered and hardness shall be checked one by one, and the hardness value shall comply with the provisions of the relevant national standards.
2 One steel pipe with the highest and lowest hardness shall be selected from each batch of steel pipes (6 specimens shall be prepared for each, including 2 tensile specimens, 2 impact specimens, and 2 flattening or cold bending specimens) for mechanical property tests, and the test requirements shall comply with the provisions of the relevant national standards.
Tensile test shall be carried out in accordance with the provisions of the current "Metal Tensile Test Method" GBT228. (When the wall thickness cannot meet the standard test piece, a complete pipe section can be used instead).
Impact test shall be carried out in accordance with the provisions of the current "Metal Charpy Notch Impact Test Method" B/T229 (When the wall thickness is less than 12mm, the test can be exempted) Compression cold bending test: When the outer diameter of the steel pipe is greater than or equal to 35mm: a compression test shall be carried out. The width of the test pipe ring shall be 30-50mm. When the sharp angle is rounded and the inner wall spacing is 0.6 times the nominal diameter, cracks, delamination, etc. shall not appear. When the outer diameter is less than 35mm, a cold test should be performed. The core diameter should be 4 times the outer diameter of the core. When the diameter is 90", there should be no defects such as cracks, breaks, and delamination. 3. Chemical analysis should be performed on the steel pipe or sample used for mechanical property test. The chemical composition should comply with the provisions of the current national standards or technical conditions for supply. 1.7 When re-inspecting high-pressure steel pipes, if there are unqualified items, they should be re-inspected twice. The re-inspection is only carried out on the items that failed the original re-inspection. The re-inspected samples are cut on the original unqualified pipe and another steel pipe with the hardness closest to the steel pipe. When the re-inspection results still have unqualified items, the batch of steel pipes should be thoroughly inspected, and those that fail shall not be used. 2.1.8 High-pressure steel pipes The pipe should have the manufacturer's ultrasonic testing certificate. If there is no manufacturer's flaw detection certificate, ultrasonic testing should be carried out on each pipe. Ultrasonic testing should be carried out in accordance with the current "Ultrasonic Testing of High-Pressure Seamless Steel Pipes" JB1151. 2.1.9 When repairable defects are found in high-pressure steel pipes after inspection, they should be ground gradually until the defects disappear. The actual wall thickness after removing the defects should not be less than 0% of the nominal wall thickness of the steel pipe, and should not be less than the designed wall thickness.
2.2 Inspection of Pipe Fittings
22.1 Pipe fittings should have product certificates, and their specifications, models, and materials should meet the design requirements.
The structural form, size and tolerance of pipe fittings, and welding ends Bevel, product standards and technical requirements shall comply with the provisions of the current national standards. 2.2.3 When inspecting the appearance of pipe fittings, their surface quality shall comply with the following provisions: 1. No cracks, slag, folds, overburning and other defects 2. No rust or depression exceeding the negative deviation of the wall thickness 2.2.4 The quality of bends shall comply with the following provisions
1 The allowable deviation of the structural length of the elbow is 1.5mm, the roundness should be less than 2%, and the allowable deviation of the bend angle should be 1°. The slope of the two end faces of the elbow should be less than 3
1% of the outer diameter of the steel pipe. The ear is not greater than 1.5mm
2. The thinning amount of the elbow wall thickness should be less than 10% of the nominal wall thickness, and the actual wall thickness of the elbow Should not be less than the designed wall thickness. wwW.bzxz.Net
2.2.5 The vertical deviation of the branch pipe of the welded or drawn tee shall not be greater than 1% of its height and not greater than 3mm. The allowable deviation of the vertical length of each end face shall not be greater than 1% of the outer diameter of the steel pipe and not greater than 3mm
2.2.6 The center lines of the two ends of the concentric reducer shall coincide, and the eccentricity value (α, -4)/2 shall not be greater than 1% of the outer diameter of the large end and not greater than 5mm as shown in Figure 226, Figure 2.2.6 Concentric reducer
2.2.7 It is strictly forbidden to use pleated bends or shrimp waist bends in natural gas gathering and transportation pipelines. The pipe heads should adopt round heads or spherical heads: their quality should meet the following 2.2.8
List of regulations:
1 The minimum wall thickness of the head should not be less than 90% of the nominal wall thickness of the head and not less than the design thickness.
2 The allowable deviation of the roundness of the inner diameter or outer diameter of the head should be ±2mm, the allowable deviation of the curved surface height should be ±4mm, and the allowable deviation of the straight edge height should be ±1mm; use a sample with a length of 300mm to check the surface convexity, and the gap shall not be greater than 2mm1112.2.9 The manufacture and inspection of pipe flanges shall comply with the provisions of the current "Technical Conditions for Steel Pipe Flanges" GB/T9125, and the manufacture and inspection of insulating flanges shall comply with the design requirements.
2.2.10 The threads of screws and nuts should be complete, without defects such as scars and burrs, and the bolts and nuts should fit well without looseness or jamming.
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