HG/T 2701-1995 Compression (YS) type packer rubber cartridge for oil and gas fields
Some standard content:
Chemical Industry Standard of the People's Republic of China
Compression (YS) type packer rubber cylinder for oil and gas fields 1. Subject content and scope of application
HG / T 2701-95
Replaces HG4--1420-81
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. for compression (YS) type packer rubber cylinders for oil and gas fields.
This standard is applicable to compression (YS) type packer rubber cylinders for stratified production, testing, water injection, acidizing and fracturing in oil and gas fields. 2 Reference standards
GB/T528 Determination of tensile properties of vulcanized rubber and thermoplastic rubber GB/T531 Test method for Shore A hardness of vulcanized rubber GB/T1690 Test method for liquid resistance of vulcanized rubber GB/T3512 Test method for hot air aging of rubber GB／T5721 General provisions for marking, packaging, transportation and storage of rubber sealing products Determination of permanent deformation of vulcanized rubber at room temperature and high temperature Determination of permanent compression set GB/T 7759
3 Terms
3.1 Sealing force
The axial compressive force required to make the compression rubber cylinder seal the annular space of the oil casing (i.e., seat seal) and withstand the specified working pressure difference. 3.2 Shrinkage
The axial compressed length of the rubber cylinder when it is seated. 3. 3 Working pressure difference
The pressure difference that the two ends of the rubber cylinder can withstand under the working state after the rubber cylinder seals the annular space of the oil casing. 3. 4 Stabilization time
After the rubber tube seals the oil casing, the time to maintain the working pressure difference as required. 3.5 Fatigue times
The number of times the rubber tube can repeatedly withstand the specified pressure difference applied from both ends of the oil casing in sequence. 3.6 Residual deformation
The ratio of the increase in the outer diameter of the rubber tube after the test to the outer diameter before the test. 4 Classification
4.1 Product code
The code of the compression (YS) type packer rubber tube for oil and gas fields is composed of its outer diameter, working temperature and working pressure difference. Example:
Approved by the Ministry of Chemical Industry of the People's Republic of China on May 5, 1995 and implemented on January 1, 1996
4.2 Category
HG /T 2701—95
Working pressure difference, MPa
Working overflow (×10c)
Outer diameter of rubber cylinder, mm
Compression type packer rubber cylinder
Compression (YS) type packer rubber cylinder is classified according to working temperature and working pressure difference, see Table 1Table 1
4.3 Type and size
Working temperature, t
Working pressure difference, MPa
4.3.1 Type: The positive contraction (YS) type packer rubber cylinder is made of pure rubber injection or molding, and its type is shown in the figure L
4.3.2 Size: The size of the compression (YS) type packer rubber cylinder shall comply with the provisions of Table 2Table 2
YS 94-7-8
YS 100-12-25
YS113--12-15
YS 113-12-25
Y$ 139-7-8
YS 146-12-25
YS 146-7-8
5 Technical requirements
HG/T 2701—95
Continued Table 2
Physical property requirements of rubber materials for rubber sheets shall comply with the provisions of Table 3. 5. 1
Tensile strength
Elongation at break
MPa, not less than
%, not less than
(Shore A)
The performance requirements of rubber sheets shall comply with the provisions of Table 4. 94-7-8
YS 100-12-25
YS 113-12-15
YS 113-12-25
YS 139-7-8
YS 146-12-25
YS 146-7-8
5.3 Appearance quality
Seating force
Hot air aging
90c×24h
Elongation change rate
%, not more than
Jade shrinkage
55 ~65
60 ~70
60 ~70
60 ~75
60 ~ 70
60 ~ 70
10# diesel
90cx24h
Volume change rate
%, not more than
Adaptable casing
101~107
108~112
124~127
124-127
148-154
154~162
Band temperature×24 h
Volume change tide
Compression permanent deformation
90×22h
%, not more than
Set up oil property hall
Verify casing
Fatigue force
53.1 The surface of rubber tube is not allowed to have holes or cracks, HG/T 270195
5.3.2 The surface of the rubber sheet shall not have defects exceeding the limits specified in Table 5. Table 5
Defect NamebzxZ.net
6 Test Method
6.1 Appearance
Inspect by visual method,
62 Dimensions
Depression Requirements
Length shall not exceed 2 mm, width shall not exceed 1 mm, height or depth shall not exceed 0.5 mm, and shall not exceed 3 locations. Length, width shall not exceed 2 mm, height or depth shall not exceed 0.5 mm, and height shall not exceed 3 locations. Width shall not exceed 1.5 mm, and length shall not exceed 1/3 of the circumference. Measure with a measuring tool with a graduation value of 0.05 mm. 6.3 Physical Properties of Rubber Materials
6.3.1 Tensile strength and elongation at break shall be carried out in accordance with GB/T528. 6.3.2 Determination of hardness shall be carried out in accordance with GB/T 531. 6.3.3 Hot air aging, in accordance with GB/T3512 6.3.4 Resistance to No. 10 diesel and acid, in accordance with GB/T1690. The composition and preparation method of the acid mixture are shown in Appendix B 6.3.3 Compression permanent deformation, in accordance with GB/T7759. 4 Finished product performance test
In accordance with Appendix A,
7 Inspection rules
7.1 Rubber materials
Rubber materials for production should be fully inspected in accordance with the provisions of Table 3, not less than once every 10 series. When one of the test results is unqualified, double samples should be taken for re-inspection of the item. If the re-test fails, the rubber material is allowed to be re-tested once, and then the full test is carried out again. If one of the items is still unqualified, the rubber material of this batch is unqualified. At the same time, the rubber material that has not been tested should be selected for full test. 7.2 Finished product performance
7.2.1 The finished product shall be no more than 300 groups as a batch, and 3 groups of each batch shall be sampled, with 3 pieces in each group. 7.2.2 Sealing performance: Among the test samples, the sealing force of one group of samples is allowed to be higher than the specified index, but it shall not exceed 20% of the specified index. Otherwise, double samples shall be taken for re-test. If it still fails, the batch of products shall be unqualified. 7.2.3 Oil-free performance: For the samples that have passed the seat sealing performance test, the oil-immersion performance test is carried out. If all three groups of samples of the oil-immersion performance test are qualified, the batch of products is qualified. If all three groups of samples are unqualified, the batch of products is unqualified. If one or two groups of samples are unqualified, then take two or four groups of samples for retest. If they are still unqualified, the batch of products is unqualified. 7.3 Appearance of finished products
The appearance of finished products is checked piece by piece.
7.4 Dimensions
Measure with vernier calipers and internal and external calipers. 8 Marking, packaging, transportation and storage
Follow the provisions of GR/T5721
A1 Test instruments and test media
HG/T2701-95
Appendix A
Compression (YS) type rubber cartridge finished product performance test method (supplement)
A1.1 Test pump, corresponding packer steel body and oil immersion test, A1.2 Pressure gauge: accuracy is 1.3 level, the range is selected according to the test pressure. A1.3 Ordinary caliper and steel ruler.
A1.4 No. 10 light diesel or No. 0 light diesel
A2 Test specimen
Before the test, the specimen must be parked at room temperature (18-28℃) for more than 4 hours. 3 Test conditions
A3.1 Sealing and pressure resistance test, at room temperature with clean water as the pressurizing medium, A3.2 Fatigue performance test, at the specified temperature and working pressure difference, in 0 and 10 light diesel medium, A4 Test procedure
A4.1 Sealing performance test
A4.1.1 Assemble the packer and record the original data of the rubber tube. A4.1.2 Install the packer into the casing and pressurize the center tube to the specified sealing force. Make the rubber tube seat and record the sealing force and compression distance.
A4.2 Sealing performance test
After the rubber tube is seated, pressurize the upper and lower ends of the rubber bar to the specified working pressure difference in turn, and maintain the pressure for 5 minutes each time. If there is no stringing or leakage, it is considered tight expansion. Then unseal and replace the medium (transformer oil), raise the temperature to the specified test temperature (if the working temperature is below 100C, the test temperature is 20C higher than the working temperature; if the working temperature is above 100C, the working temperature is the test temperature), and then keep the temperature constant for 30 minutes, and then seal the rubber tube again with the specified sealing force. A4.3 Fatigue performance test
Add the working pressure difference from one end of the casing, stabilize it for 4 hours, release the casing pressure to zero, and then add the working pressure difference from the other end, and still maintain the pressure for 4b. The two ends are subjected to pressure once, which is one fatigue test. The test is carried out to the specified number of fatigue times. A4.4 Measurement and calculation of residual deformation
A4.4.1 Before assembling the packer, measure the outer diameter of the rubber cylinder. After the oil immersion fatigue test, take out the packer from the steel body and remove the rubber cylinder immediately. Wait for the packer to be taken out of the steel body for 2 hours before measuring the outer diameter of the packer. A4.4.2 The outer diameter change rate A (%) is calculated as follows: AD
Wherein: D-outer diameter of the rubber cylinder after the fatigue test, mm; d.
-outer diameter of the cylinder before assembly, mm.
B1 Components
The components of the acid mixture are shown in Table B1.
Proportion, %
B2 Preparation method
Formaldehyde solution
HG/T 2701 -95
Appendix B
Composition of acid mixture and its preparation method
(Supplement)
(CH,O total content more than 36%)
(HCl content more than 36%)
(Glacial acetic acid)
(Distilled water)
Prepare 1000mL mixed solution of hydrochloric acid, acetic acid, formaldehyde and water: measure 352mL of hydrochloric acid, 19mL of glacial acetic acid and 51mL of formaldehyde solution respectively, pour them into a 1000mL measuring cylinder, and dilute with distilled water to the maximum scale line. Additional notes:
This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Northwest Rubber Industry Products Research Institute of the Ministry of Chemical Industry. This standard was drafted by Tieling Rubber Products Factory. The main drafters of this standard are Yan Xinglin, Zhao Wanrong, Cao Yuanli and Zhang Bingqiang. From the date of implementation of this standard, the original standard HG4-1420-81 "Compression Packer Rubber Cylinder for Oil and Gas Fields" of the Ministry of Chemical Industry of the People's Republic of China shall be used as the standard.
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