GB/T 34229-2017 English PDF

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GB/T 34229-2017: Coalbed methane well test method -- Drill stem testing method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34229-2017	279	Add to Cart	3 days	Coalbed methane well test method -- Drill stem testing method	Valid

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Basic data

Standard ID: GB/T 34229-2017 (GB/T34229-2017)
Description (Translated English): Coalbed methane well test method -- Drill stem testing method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D20
Classification of International Standard: 73.040
Word Count Estimation: 14,189
Date of Issue: 2017-09-07
Date of Implementation: 2018-04-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34229-2017: Coalbed methane well test method -- Drill stem testing method

---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.
Coalbed methane well test method - Drill stem testing method ICS 73.040 D20 National Standards of People's Republic of China Well test method for CBB well drilling rod formation test method 2017-09-07 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Method Summary 2 5 equipment and meters 2 6 well test design 3 7 test program 5 8 data recording and collection 5 9 test data interpretation 6 10 Outcome Report 6 Appendix A (informative) Drilling process pressure gradient calculation table 8 Appendix B (Normative) Downhole test string records table 9 Appendix C (normative) field test data record table 10

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Coal Industry Association. This standard by the National Coal Standardization Technical Committee (SAC/TC42) centralized. This standard drafting unit. China Coal Science and Technology Group Xi'an Research Institute Co., Ltd., Xi'an Petroleum University. The main drafters of this standard.Wang Yanlong, Yang Xinhui, Lin Jianeng, Liu Changyi, Li Yanjun. Well test method for CBB well drilling rod formation test method

1 Scope

This standard specifies the terms and definitions CBM wellbore formation test methods, methods, equipment and instruments, well test design, test procedures Sequence, data recording and collection, test data interpretation, results report. This standard applies to CBM exploration and development of well test.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 31537 CBM (coal mine gas) terms

3 Terms and definitions

GB/T 31537 defined and the following terms and definitions apply to this document. For ease of use, the following list is repeated GB/T 31537 some of the terms and definitions. 3.1 Drill pipe formation test drilstemtest During drilling, drill pipe is used as a conduit for formation fluids to flow to the surface to test formation parameters. [GB/T 31537-2015, Definition 4.4.4] 3.2 Test the pressure difference between thetestpressuredifference ΔP Testing the initial flow pressure differential determines the ease of formation fluid flow. 3.3 Liquid cushion liquidcushion In order to avoid excessive pressure test, a certain height of fluid (water or drilling fluid) needs to be filled in the test string to balance the pressure drop. Liquid pre-filled in the column is called a liquid cushion. 3.4 Open well openwel Open the test valve to allow formation fluids to flow to the wellbore. 3.5 Open well time openweltime Open the test valve to allow formation fluids to flow to the wellbore for a sustained period of time. 3.6 Shut-in shut-in Close the test valve to allow formation pressure to recover. ......

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