Some standard content:
ICS75.180.10
Registration No.: 6845—2000
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T 5068—2000
Overshot for drilling and servicing
Overshot for drilling and servicing2000-03-10 Issued
State Petroleum and Chemical Industry Bureau
2000-10-01 Implementation
SY/T 5068—2000
This standard is a revision of SY The six standards of SY/T 5068--91
"Repairable and retractable salvage tube", SY/T5151-93 "Retractable inverted salvage tube", SY/T5196--1995 "Sucker rod salvage tube", SY5438.1-92 "Sucker rod and coupling salvage tube three-ball salvage tube", SY/T 5959-94
"Repairable and retractable elbow salvage tube" are combined and revised into "Submersible electric pump salvage tube" and SYT6116--94.
This standard absorbs the contents of six standards such as SY5068-91 that can meet the requirements of production, use and inspection, and revises the following contents:
1. The classification and naming are unified;
2. The allowable tensile force and torque values of some salvage cylinders are modified; 3. The 2 times allowable tensile force test and 2 times allowable torque test are modified to 1.5 times allowable tensile force test and 1.5 times allowable torque test; 4. The requirements for the accuracy of the performance test equipment of the overshot cylinder are increased. This standard is based on meeting the needs of drilling and repairing salvage operations, and stipulates the minimum performance requirements for salvage tubes. It is applicable to various types of salvage tubes:
This standard will replace SY5068--91, SYT5151-93, SY7T5196-1995, SY5438.1-92, SY/T5959--94, SY/T 6116-94 from the date of entry into force. This standard is proposed and managed by the National Technical Committee for Standardization of Petroleum Drilling and Production Equipment and Tools. The responsible drafting unit of this standard: Drilling Technology Research Institute of North China Petroleum Administration Bureau The participating drafting unit of this standard: Tonghua Petroleum Industry Co., Ltd. The drafters of this standard are Zhang Hulin, Wang Limei, Su Xuebin, Lv Yanjiang, and Tian Xiaoyan. Standard SY5068 was first issued in 1985, revised for the first time in 1991, and this is the second revision. 1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Overshot for drilling and servicing
Overshot for drilling and servicingSY/T5068—20001)
This standard specifies the classification and naming, parameters, technical requirements, test methods, inspection rules and marking, packaging, storage and transportation of overshot for drilling and servicing (hereinafter referred to as overshot). This standard applies to the design, manufacture, inspection and use of overshot for oil drilling and servicing operations. 2 Referenced 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. GB/T228-1987 Metal tensile test method
GB/T 229-1994
Metal Charpy notched impact test method
GB/T230-1991 Metal Rockwell hardness test method GB/T231-1984 Metal Brinell hardness test method GB/T531-1992 Vulcanized rubber Part A hardness test method GB/T9253.1-1999 Petroleum drill pipe joint thread (GB/T9253.2-1999 Petroleum and natural gas industry casing, tubing and pipeline thread T, measurement and inspection SY 5029—1995 Sucker rod (sucker rod short joint, polished rod, coupling and reducing coupling) SY/T5290—91 Oil drill pipe joint
JB/4730—1994 Pressure vessel nondestructive testing
3 Classification and naming
3.1 Classification
According to the purpose, the carrying tube is divided into inverted type and non-inverted type; according to the use characteristics, it is divided into retractable type and non-retractable type. 3.2 Naming (model compilation)
OC T-03x0
Nominal outer diameter of the salvaged pipe, IIII; the maximum outer diameter of the salvage tube with multiple sets of slips, mm
Use characteristic code: T for retractable type, abbreviated for non-retractable type "battery tube" Chinese pinyin -th character
Purpose classification code: D for inverted type overshot tube, abbreviated for non-inverted type Salvage object code: B for submersible pump salvage tube: W for bent fish head salvage tube; C for sucker rod overshot tube (G for salvage sucker rod coupling): Others abbreviated 1) Replace SY5068-9 1, SY/T5151-93, SY/T519-1995, SY5438.1-92, SY/T5959-94, SY/T6116-94 Approved by the State Administration of Petroleum and Chemical Industry on March 10, 2000 and implemented on October 1, 2000
Example:
SY/T5068-2000
CLT-92×25: indicates a maximum outer diameter of 92mm, used to salvage a sucker rod with a nominal outer diameter of 25mm. GLT-105×60: indicates a maximum outer diameter of 105mm, used to salvage a sucker rod coupling with a nominal outer diameter of 60mm. DLT-T105×60: indicates a retractable inverted salvage with a maximum outer diameter of 105mm, used for salvaging a pipe with a nominal outer diameter of 60mm. LT-T127: indicates a retractable salvage with a maximum outer diameter of 127mm, equipped with multiple sets of salvage slips, and its salvage range is determined by the slips equipped.
4 Technical requirements
4.1 The basic parameters of the bent fish head salvage tube shall comply with the provisions of Table 1. The basic parameters of the sucker rod (sucker rod coupling) salvage tube shall comply with the provisions of Table 2, the basic parameters of the submersible electric pump salvage tube shall comply with the provisions of Table 3, the basic parameters of the retractable inverted salvage tube shall comply with the provisions of Table 4, and the basic parameters of the retractable salvage tube shall comply with the provisions of Table 5. For the salvage tube equipped with multiple sets of slips, the outer diameter size of the salvage pipe string equipped with the slips shall be specified by the supply and demand parties in the contract. Table 1 Bend fish head overshot tube
Overhaul range
WLT-95X48
WLT-107X60
WLT-118×73
WLT-136×89
WL.T-150X102
WLT-165×114
CLT-55×
CLT-72×
CLT-□92X□
CLT-112X口
GLT-95X
GLT-□105×| |tt||GLT-117×
GLT-140X
GLT-150×60
Nominal outer diameter of pipe string
Maximum size of long axis of fish head
Allowable tension
Sucker rod (sucker rod coupling) overshot
Salvage pipe string
Outer diameter range
Allowable tension
Connector thread code
Connector thread code
236TBG
BLT-120×
11T195×48
DLT - 7105 × 60
7114×73
ILT -7134 × 89
IDLT - TH5 102
160×114
DLT -1185× 127
.TT2[0×140
1I~176 ×
1T T86×
LT~ T89
1T T92×
LT-TS×
LT T102×L
LT-T105×
IT - T1O8 ×_
LT-TI4×
LT-T118×
LT-Tf20 ×
LT-T124 ^bZxz.net
1T-I127×
[T - F130 ×
Rolling pipe column
Outer diameter range
60 ~62
72 - 75
101-104
113--115
126~129
1.39 - 142
SY/T 5068—2000
Table 3 Submersible electric pump overshot
Overshot pipe
Outer diameter range
93·~101
Allowable tension
Table 4 Retractable inverted overshot
Allowable tension
Inverted tension and allowable torque
Table 5 Retractable overshot
Overshot pipe
Outer diameter range
32 - 50
32 ---60
48 ~73
48 -73
48·-73
60 ~ 89
60 ~ 95
Allowable tensile force
Connector thread code
Connector thread code
Connector thread code
NC26, 23g TRG
NC26, 2%REG, 2%TBG
23 RFG, 2%TR
NE31. 2TEG
NC31, 2%RFG
MC31. NC38
NC31: NC38
NC31, N38
N31, 3THG
LT-T134×
LT-T140×
LT-T143×
LT-T145×
LT-T150×
LT-T152×
LT-T156×
LT-T159×
LT-T162×
LT-T168×
LT-T170×|| tt||LT-T178X
LT-T187×
LT-T190×
LT-T194×
LT-T200×
LT-T20 3×
LT-1206×
LT-T213×
LT-T216×
LT-T219×
LT-T225X
LT- T232×
LT-T238×
LT-T241×
LT-T245×
LT-T254×
LT-T260×||tt| |LT-T263×
LT-T270×E
LT-T273×
LT-T279×
LT-T286×□
SY/T506 8—2000
Table 5 (continued)
Salvage string
Outer diameter range
60~105
65~115
65~115
6 5~115
65~121
89~127
89-127
89-127
111~159
111~159|| tt||111-159
111~159
111-159
111~168
124~178
124~178||tt ||124~178
127~178
127178
127~178
127-178
127~203
1 27~203
127~219
127~219
127~229
127~229
127~229
127~245
Allowable tension
Connector thread code
NC31,NC38
NC31,NC38
NC31 ，NC38
NC31，NC38
NC31,NC38
NC31，NC38
NC38，NC46
LT-T295×
LT-T298X
LT-T302×
LT-T340×
SY/T5068—2000
Table 5 (end)
Salvage string
Outer diameter range
127~245
127~245
229-280
Allowable tensile force
Joint thread code
4.2The sealing material used for the salvage tube is oil-resistant rubber, the temperature resistance shall not be lower than 120℃, and the hardness (Shore A) is 80±54.3The mechanical properties of the main parts such as the upper joint, cylinder, and slips shall comply with the provisions of Table 6. Table 6 Mechanical properties of main parts
Upper joint
Tensile strength.
≥1080
Yield strength 00.2
Elongation 8s
Shrinkage of area flat
Impact energy Asv
4.4For parts that need to be tempered and heat treated, the hardness after tempering shall not be less than 260HB; slips need to be surface treated, the treatment layer depth is 0.5~0.9mm, and the surface hardness is 55~62HRC4.5Main parts such as upper joints, cylinders, slips, etc. shall be non-destructively inspected, and the defect level shall not be lower than the single defect level II, wave bottom reduction level I, dense area defect level I specified in the ultrasonic inspection of pressure vessel forgings in JB/T4730, and the cumulative length level I specified in the magnetic particle inspection of pressure vessel forgings:
4.6The drill pipe joints on the salvage tube comply with the provisions of SY/T5290. The joint threads on the overshot tube should adopt the types and specifications specified in Table 1, Table 2, Table 3, Table 4, and Table 5, and the thread size should comply with the relevant requirements of GB/T9253.1, GB/T9253.2, and SY/T5029. 4.7 The welds of the welding parts of the overshot tube parts should be flat and smooth. 4.8 After the overshot tube is assembled, the movable parts should move flexibly and reliably, and there should be no steps in the inner cavity that affect the introduction of the fish. 4.9 The outer surface of the overshot tube is painted with anti-rust paint or blackened. 4.10 Performance of the whole machine:
The sealing pressure of the overshot tube that needs to be pumped and circulated after the fish is caught should be greater than 10MPa. After the fish is caught, the overshot tube should be reliably grasped when subjected to the allowable tensile force specified in Table 1, Table 2, Table 3, Table 4, and Table 5, and there should be no slipping. When subjected to 1.5 times the allowable tensile force, the parts should not be damaged or plastically deformed. The retractable overshot tube should be flexible and free of obstruction when retracting the fish.
The inverted overshot tube should be able to withstand the permissible torque specified in Table 4 under the inverted tension specified in Table 4, and there should be no slippage. When subjected to 1.5 times the permissible torque, the parts should not be damaged or plastically deformed. The fish should be retracted flexibly without obstruction. 5 Test methods
5.1 The mechanical properties of the main parts of the product shall be tested in accordance with the provisions of GB/T228 and GB/T229. 5.2 The hardness of the sealing rubber parts shall be tested in accordance with the provisions of GB/T531. 5.3 Non-destructive testing shall be carried out in accordance with the relevant provisions of non-destructive testing of pressure vessel forgings in JB/T4370. SY/T 5068—200
5.4 The inspection of the joint thread shall be carried out in accordance with the relevant provisions of GB/T9253.1, CB/T9253.2, and SY/T5029. 5.5 The hardness test of the parts subjected to quenching and tempering treatment shall be carried out in accordance with the relevant provisions of GB/T231; the hardness test of the parts subjected to annealing treatment shall be carried out in accordance with the relevant provisions of GI3/T230.
5.6 Performance test of the whole machine:
5.6.1. The performance test of the whole machine shall be carried out on a simulated test device with an indication accuracy of not less than 1%. 5.6.2 According to the specifications of the test salvage tube, a pipe column of corresponding specifications shall be selected as the fish to be salvaged, and it shall be fixed on the base of the test device: Connect the salvage tube to the pull head of the test device, slowly feed the fish and keep the salvage tube in a salvaging state. 5.6.3 Tightness test:
After completing the operation in 5.6.2, pump clean water from the upper end of the overshot tube. When the pressure rises to 10MPa, maintain the pressure for 3 minutes. The pressure drop shall not be greater than IMPac
5.6.4 Permissible tension test:
Repeat the operation in 5.6.2, gradually apply axial tension to the permissible tension value, maintain it for 3 minutes, then unload, exit the color, and check the salvage according to the requirements of 4.10.
5.6.5 1.5 times the permissible tension test:
Repeat the operation in 5.6.2, gradually apply axial tension to 1.5 times the permissible tension, maintain it for 3 minutes, then unload, exit the color, and check the salvage according to the requirements of 4.10.10.
5.6.6 Permissible torque test:
Repeat the operation of 5.6.2, then gradually apply axial tension to the reverse tension value, then slowly apply torque to the permissible torque value, keep for 3min, then unload, withdraw the fish, and check the salvage tube according to the requirements of 4.10. 5.6.71.5 times permissible torque test:
Repeat the operation of 5.6.2, gradually apply axial tension to the reverse tension value, then slowly apply torque to 1.5 times the permissible torque, keep for 3min, then unload, withdraw the fish, and check the salvage tube according to the requirements of 4.10. 6 Inspection rules
6.1 Factory inspection
Products must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by product qualification certificates before they can leave the factory. The factory inspection items are:
a) Connecting thread:
b) Heat treatment hardness:
c) Flexibility of moving parts;
d) Non-destructive testing of main parts;
e) Sealing test
6.2 Type inspection
6.2.1 Type inspection is required in any of the following situations: a) Prototype trial production:
b) After formal production, there are major changes in materials and processes: c) Normal production is stopped, and the annual or cumulative continuous production reaches 1H) sets; d) The national or industry quality supervision agency proposes a type inspection. 6.2.2 Type inspection items:
a) Joint thread:
b) Heat treatment hardness;
c) Flexibility of moving parts:
d) Nondestructive testing of key parts
—6—
e) Hardness of rubber seals;
f) Mechanical properties of main parts;
g) Sealing test;
h) Performance of the whole machine.
6.3 Judgment rules
SY/T5068—2000
6.3.1 Factory inspection: 5% of items 6.1b) and 6.1e) shall be sampled for inspection, and the rest items shall be inspected piece by piece. If one of the indicators is unqualified, the product is deemed unqualified. If the sampling items are found to be unqualified, the product shall be inspected piece by piece. 6.3.2 Type inspection, the number of samples shall not be less than 2 sets, and each set of samples shall be inspected according to the items specified in 6.2.2. If one of the indicators is unqualified, the type inspection shall be deemed to be unqualified.
7 Marking, packaging, purchase, storage and transportation
7.1 Marking
The following markings shall be printed in the marking slot of the product: a) Product model and joint thread code:
b) Salvage range, for salvage tubes equipped with multiple sets of slips, the outer diameter of the salvage pipe column shall be marked on the slips equipped; c) Manufacturer code or registered trademark;
d) Product number or date of manufacture.
7.2 Packaging
7.2.1 After the product is assembled, the joint threads shall be coated with anti-rust grease and protected with thread protectors. 7.2.2 The packaging box should be marked with the manufacturer's name, address, product name and model, and date of manufacture. The accompanying documents include:
a) Product inspection certificate;
b) Product instruction manual;
c) Packing list.
The above documents must be packed in plastic bags and placed in the packaging box. 7.3 Storage and transportation
The product should be kept in a clean, dry, ventilated warehouse and avoid contact with corrosive substances. It should be placed horizontally during storage and transportation, and it is strictly forbidden to drop, bump or squeeze.
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