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GB/T 35053-2018: Sealed coring method for determination of coalbed methane content
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| GB/T 35053-2018 | English | 159 |
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Sealed coring method for determination of coalbed methane content
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Standard similar to GB/T 35053-2018
GB/T 35064 | GB 34170 | GB/T 31426 | GB/T 35058 | GB/T 35062 | Basic data
| Standard ID | GB/T 35053-2018 (GB/T35053-2018) |
| Description (Translated English) | Sealed coring method for determination of coalbed methane content |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | D20 |
| Classification of International Standard | 73.040 |
| Word Count Estimation | 8,848 |
| Date of Issue | 2018-05-14 |
| Date of Implementation | 2018-09-01 |
| Regulation (derived from) | National Standards Announcement No. 6 of 2018 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 35053-2018: Sealed coring method for determination of coalbed methane content
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(CBM content measurement method using sealed coring)
ICS 73.040
D20
National Standards of People's Republic of China
Closed coring method for measuring coalbed methane content
Published on.2018-05-14
2018-09-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Method Summary 1
5 Equipment 1
6 closed coring method 3
7 Quality Review 4
Appendix A (informative appendix) Coal seam sealing coring record table 5
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the China Coal Industry Association.
This standard is under the jurisdiction of the National Coal Standardization Technical Committee (SAC/TC42).
This standard was drafted. China Coal Science and Technology Group Xi'an Research Institute Co., Ltd.
The main drafters of this standard. Zhang Peihe, Sun Siqing, Hei Lei, Long Weicheng, Chen Zhisheng, Jing Xingpeng, Zheng Kaige, Yin Xinsheng, Zhao Jizhan,
Xiao Wenxi.
Closed coring method for measuring coalbed methane content
1 Scope
This standard specifies the method summary, equipment, closed coring method and quality review of the closed coring method for the determination of coalbed methane content.
This standard is applicable to the sealing of coalbed methane content in the exploration and development of coal and coalbed methane. The sampling of shale gas content can be used for sampling.
Test use.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 19559 Determination method of coalbed methane content
GB/T 28753 Determination of coalbed methane content by heating desorption method
GB/T 31537-2015 CBM (mineral gas) terminology
3 Terms and definitions
The following terms and definitions as defined in GB/T 31537-2015 apply to this document. For ease of use, the following is repeated
Certain terms and definitions in GB/T 31537-2015.
3.1
Closed coring sealingcoring
In the process of drilling the target interval in the borehole, the core valve is closed or other sealing method is adopted to prevent the escape of the coal core gas.
The method of taking the heart.
3.2
Rope core wire-linecoredriling
The drilling technique of taking out the core accommodating pipe through the inner hole of the drill pipe without lifting the drill by using the fishing device with the rope.
[GB/T 31537-2015, definition 4.1.4]
3.3
Coalbed methane content
The amount of methane and heavy hydrocarbons contained in a unit mass of coal. Expressed in gas volume at standard temperature and standard pressure.
4 method summary
After drilling the target horizon, all the drilling tools in the well are proposed, and the closed coring device is connected with the drill pipe and sent to the predetermined position in the well, and the core is taken and taken.
After the end of the heart, the pumping fluid is used to pressurize the coring ball valve to close or seal the core, and the core is sealed in the inner tube of the coring machine.
The rope is salvaged or extracted to extract the coring machine, and then the coal core for determining the coalbed methane content is obtained.
5 equipment
5.1 Closed coring tool
The closed coring tool should include a coring device, a coring inner cylinder assembly, a closed coring bit, a rope fishing head, a adapter, etc., as shown in Fig. 1.
