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GB/T 40548-2021 English PDF

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US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40548-2021: Technical specification of separate layers pressure control and combined layers drainage for coalbed methane wells
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40548-2021	199	Add to Cart	3 days	Technical specification of separate layers pressure control and combined layers drainage for coalbed methane wells	Valid

Similar standards

GB/T 17766 YS/T 514.1 MT/T 1091 GB/T 40546 GB/T 40545

Basic data

Standard ID: GB/T 40548-2021 (GB/T40548-2021)
Description (Translated English): Technical specification of separate layers pressure control and combined layers drainage for coalbed methane wells
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D15
Word Count Estimation: 10,126
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40548-2021: Technical specification of separate layers pressure control and combined layers drainage for coalbed methane wells

---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.
Technical specification of separate layers pressure control and combined layers drainage for coalbed methane wells ICS 75.020 CCSD15 National Standards of People's Republic of China Technical specifications for coalbed methane wells with stratified controlled compression layer drainage and production Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Purpose and Mission 1 5 Pressure control method 2 6 Drainage equipment 2 7 Production management 6 8 Construction safety requirements 6 Appendix A (informative) Daily report of double seam layered controlled compression seam drainage 7

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Coal Industry Association. This document is under the jurisdiction of the National Coal Standardization Technical Committee (SAC/TC42). This document was drafted by. China Coal Science and Industry Group Xi'an Research Institute Co., Ltd. The main drafters of this document. Du Xinfeng, Zhang Qun, Du Zhiqiang, Zhang Dongliang, Xu Yaobo, Zhang Peihe, Jiang Wenping, Zheng Yuzhu, Wang Zhengxi, Duan Yanning and Wu Jing. Technical specifications for coalbed methane wells with stratified controlled compression layer drainage and production

1 Scope

This document specifies the purpose and tasks of the drainage and production of coalbed methane wells, the pressure control method, the drainage equipment, the drainage management, and the construction safety. All requirements. This document is applicable to CBM well drainage projects under the conditions of double seams and multiple coal seams.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 31537 CBM (coal mine gas) terminology SY/T 6921 Safety technical specification for coalbed methane well drainage

3 Terms and definitions

The following terms and definitions defined in GB/T 31537 apply to this document. 3.1 Separatelayerspressurecontrol Through the use of packers and other tools, the hydraulic connection between the coal seams is separated, so that the coal seams are in different periods during the whole or part of the drainage process. Technical measures under the stressful environment. 3.2 Combinedlayersdrainage In the process of coalbed methane drainage, multiple production layers produce water and gas through one wellbore.

4 Purpose and mission

4.1 Purpose of coal mine drainage According to the differences in the characteristics of coal reservoirs, each target layer is sealed in its own independent pressure system, and different fluids are used to face each target coal layer. Pressure control management is implemented to reduce the damage of the reservoir during drainage, realize the simultaneous desorption and gas production of each coal seam, and improve the efficiency of drainage and production. 4.2 Coal mining task According to the characteristics of coal reservoirs, reasonable selection of drainage equipment and pipe string structure, according to the principle of stability and continuity, optimize the drainage system, and control each coal The laminar flow pressure changes, so that each reservoir can drain and produce gas in the optimal state. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40548-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40548-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 40548-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40548-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.