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Chemical Industry Standard of the People's Republic of China
Annular BOP Rubber Core
1 Subject Content and Scope of Application
HG2292-92
This standard specifies the type and size, technical requirements, test methods, inspection rules and marking, packaging, transportation and purchase and storage of annular BOP rubber core.
This standard applies to the sealing rubber core of annular BOP for petroleum exploration, drilling, oil testing, well repair and oil and gas well control, and its working temperature is 23℃~～100℃.
2 Reference standards
Determination of tensile properties of vulcanized rubber
(GB/T529 Determination of tear strength of vulcanized rubber (trouser-shaped, right-angled and crescent-shaped test specimens) GB531
Rubber Shore A hardness test method
GB 1682
GB 1690
GB2828
GB3512
GB 3672
GB5721
GB5722
GB6031
GB7759
GB 7760
Test method for brittle temperature of vulcanized rubber
Test method for liquid resistance of vulcanized rubber
Count sampling procedure and sampling table for batch inspection (applicable to inspection of continuous batches)Test method for hot air aging of rubber
Dimensional tolerances of solid molded and extruded rubber productsGeneral provisions for marking, packaging and transportation of rubber sealing productsGeneral provisions for storage of rubber sealing products
Determination of international hardness of vulcanized rubber (30~~85IRHD) Conventional test method
Vulcanized Determination of permanent deformation of rubber under constant deformation at room temperature and high temperature Determination of adhesion between vulcanized rubber and metal Single plate method 3 Types and sizes
3.1 The basic types of rubber cores are divided into type A (conical) and type B (spherical), as shown in Figure 1. If other types of rubber cores are required, the supply and demand parties shall negotiate and resolve the issue on the premise of meeting the requirements of this standard. Approved by the Ministry of Chemical Industry of the People's Republic of China on June 1, 1992 and implemented on October 1, 1993 www.bzxz.net
Working surface
Working surface
HG 2292--92
Type of rubber core
3.2 Dimension series see Table 1 + its dimensions and tolerances are in accordance with the M3F grade regulations in GB3672, Table 1
FH 180-21
Product code
FH180-35A
FH180-70
FH230-21A
FH230-35A
FH 230-70
Outer diameter D
Support ribs
Support ribs
Nominal inner diameter d
FH 280-21
FH280-35A
FH280-353
FH280-70
Product code
FH346-21A
FH 346-35R
FH426-14||t t | 2292-92
Continued Table 1
Outer diameter D
Nominal inner diameter d
Note: In the product code column, the products with A and B codes are finalized products. 3.3 Use Chinese phonetic letters and numbers to mark the products with "product name, nominal inner diameter, rated working pressure, manufacturing unit, standard number".
Example:
4 Technical requirements
280-35
4.1 The physical properties of rubber materials
shall comply with the provisions of Table 2.
HG2292
Standard No.
Manufacturing Unit Code
Rated Working Pressure, MPa
Product Specifications (Nominal Inner Diameter, mm)
Annular BOP Rubber Core
Hardness, Dole A or IRHD
Tensile Strength, MPs
Elongation at Break, %
Compression Set (100℃×22h, B Specimen), %HG2292-92
Liquid resistance (No. 1 standard oil 100℃×24h) Volume change rate, % Hot air aging (100C×24h)
Low brittleness (23C)
Tear strength, kN/m
Adhesion strength between rubber and metal, kN/m
Appearance quality
Tensile strength change rate, %
Elongation at break change rate, %, Reduce
The product appearance should be regular, the rubber on the supporting ribs should be removed, and the metal surface should be coated with anti-rust oil. 4.2.2
The planes on the supporting ribs of the product must be evenly distributed on the same plane, and the spacing tolerance shall not exceed 3mm. The parting surface shall not be set on the working surface.
4.2.4Other appearance qualities of the product shall comply with the provisions of Table 3. Table 3
Defect name
Convex defect
Trimming mark
4.3 Product performance
4.3.1 Drill pipe sealing performance:
4.3.1.1 The drill pipe specifications are listed in Table 4. Nominal inner diameter d, m
≥280
The diameter is not greater than 10mm, and there shall be no more than 3 convex points. The depth or height shall not exceed 5mm
Shear penetration or height shall not exceed 3mm
Drill seed diameter, mm
4.3.1.2 Apply well pressure to 70% and 100% of the rated working pressure of the blowout preventer respectively, and maintain the pressure for 3 minutes without leakage. 4.3.2 Drill pipe sealing performance: Apply well pressure to 50% of the rated working pressure of the blowout preventer, stabilize the pressure for 3 minutes without leakage, 4.3.3 Fatigue performance
10～+5
20-+10
4.3.3.1 Use drill pipe specifications according to the provisions of Table 4. 4.3.3.2 Apply well pressure to 70% of the rated working pressure of the blowout preventer, stabilize the pressure for 3 minutes and then release the pressure, forming a cycle, repeat 365 cycles without leakage.
5 Test method
Product size and tolerance measurement
Measurement is carried out using a measuring tool with an accuracy of 0.05mm. 204
5.2 Physical property measurement of rubber materials
HG 2292--92
5.2.1 Hardness test, according to GB6031 or GB531, GB6031 is the stretch cutting method. 5.2.2 Tensile strength and tear elongation test, according to GB528. 5.2.3 Compression set test, according to GB7759. 5.2.4 Liquid resistance test, according to GB1690. 5.2.5 Hot air aging test, according to GB3512. 5.2.6 Low temperature test, according to GB1682. 5.2.7 Tear strength test, according to GB/T529. 5.2.8 Rubber and metal adhesion strength test, according to GB7760. 5.3 Appearance quality
Inspect with a moon sight or a measuring tool with an accuracy of 0.02mm. 5.4 The sealing performance and fatigue performance tests of the products shall be in accordance with the provisions of Appendix A
6 Inspection rules
6.1 The dimensions and tolerances of the products shall be sampled in accordance with the provisions of GB2828, using the general inspection level 1 and the AQL value of 4. 6.2 The physical performance tests of the 15 items of rubber materials in Table 2 shall be conducted at least once a month, and the full test in Table 2 shall be conducted at least once a quarter. If the test result is unqualified, double-borrowed samples shall be taken for re-inspection. If one item is still unqualified after the re-inspection, the batch of materials shall be unqualified. 6.3 The appearance quality inspection of each product shall be carried out. 6.4 There is a drill pipe sealing test.
6.4.1 The product shall be subjected to a sealing test at a test pressure of 70% of the rated working pressure of the blowout preventer. 6.4.2 Products of the same type are grouped into batches of no more than 30 pieces, and one piece is sampled from each batch for testing. The pressure is 100% of the rated working pressure of the blowout preventer for sealing test. If the sampling result is unqualified, double the sample should be taken for re-testing. If it is still unqualified after re-testing, the batch is unqualified. 6.5 Products of the same type are grouped into batches of no more than 30 pieces, and one piece is sampled from each batch for sealing test without drill pipe. If the test result is unqualified, double the sample should be taken for re-testing. If it is still unqualified after re-testing, the batch is unqualified. 6.6 Before new products of various types and sizes are put into production, fatigue tests are required. After production, the manufacturer and the user can negotiate to conduct tests.
7 Marking, packaging, transportation, storage
7.1 The marking, packaging and transportation of products refer to the provisions of GB5721. 7.2 The storage of products shall comply with the provisions of GB5722.
7.3 Under the conditions of complying with the above provisions, the storage period of the product is years from the date of manufacture. 205
A1 Test device
HG2292-92
Appendix A
Annular blowout preventer rubber core sealing test and fatigue test method (supplement)
It consists of annular blowout preventer, hydraulic control system and booster pump, as shown in Figure A1. Stop valve
Hydraulic control system
777777
Annular BOP
Pressure gauge
Pressure pump
777777
Figure A1 Annular BOP rubber core sealing performance and fatigue test device A2 Test procedure
A2.1 Drill pipe sealing test
A2.1.1 Apply oil to the rubber core, install it into the BOP housing, and then install the drill pipe (the drill pipe specifications are specified in Table 4). A2.1.2 Fill the inner cavity of the BOP body with water. A2.1.3 Close the BOP according to the closing pressure recommended by the main engine manufacturer. A2.1.4 Apply pressure to the bottom of the rubber core to the specified well pressure (70% of the rated working pressure or 100% of the rated working pressure), and stabilize the pressure for 3 minutes. A2.2 Sealing test without drill pipe
A2.2.1 Apply oil to the rubber core and install it into the BOP housing. A2.2.2 Fill the inner cavity of the BOP body with water. A2.2.3 Close the BOP according to the closing pressure recommended by the main engine manufacturer. A2.2.4 Apply pressure to the bottom of the rubber core to the specified well pressure (50% of the rated working pressure) and stabilize the pressure for 3 minutes. A2.3 Fatigue test
A2.3.1 Apply oil to the rubber core and install it into the BOP housing, and then install the drill pipe (the drill pipe specifications are specified in Table 4). A2.3.2 Close the BOP according to the closing pressure recommended by the main engine manufacturer. A2.3.3 Apply pressure to 70% of the rated working pressure of the BOP at the bottom of the rubber core, stabilize the pressure for 3 minutes and then release the pressure, which constitutes a cycle. A2.3.4 After every 20 cycles, open the BOP, observe the changes in the rubber core, and measure the inner diameter of the rubber core. Measure the inner diameter every 5 minutes until 30 minutes, and record the situation and the inner diameter values. A2.3.5 Repeat steps A2.3.2, A2.3.3, and A2.3.4 until 365 cycles. A3 Test results
No leakage is qualified.
A4 Test report
A4.1 The sealing test report is shown in Table A1. 206
Specimen specifications
Drill pipe specifications·mm
With drill pipe
Sealing
Without drill pipe
Sealing
Closing force, MPa
HG 2292—92
Table A1 Annular blowout preventer rubber core sealing test report Sample number
Test pressure (simultaneous pressure) MPa
Test result
Closing pressure·MPa
Test force (well pressure), MPa
Test result
Tester:
Reviewer:
A4.2 The fatigue test report is shown in Table A2. Production date
Fatigue test report of annular blowout preventer rubber core
Table A23
Specimen specifications
Tester:
Number of pressure cycles
81~100
101~～120
121140
141~~160
161~180
Additional instructions:
Specimen number
Reviewer:
Production date
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Northwest Rubber Industrial Products Research Institute. This standard was drafted at the expense of Shanghai Rubber Products Factory No. 1. The main drafters of this standard are Qiu Peijin, Su Guirong, Wei Mingyang, Liu Guozhu and Wang Linbin. Pressure cycle number
181~200
201~220
221~240
241~260
261~280
281~300
301-320
321~340
341365
Submitter
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