GB/T 35206-2025Thin section examination of shale and mudstone (English PDF)

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 for standardization documents" Drafting.

This document replaces GB/T 35206-2017 “Identification of thin sections of shale and mudstone”. Compared with GB/T 35206-2017, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows.

a) The scope of application has been changed (see Chapter 1, Chapter 1 of the 2017 edition);

b) Added the technical specifications of “fluorescence system” and instruments and equipment (see 4.1);

c) The content of “Reagents” has been changed (see 4.2, 4.2 of the 2017 edition);

d) Added content on “solid organic matter”, “oil content” and “acid drop reaction” for visual observation of rock specimens (see 5.1);

e) Modified some content on “Rock Thin Section Identification” (see 6.1, 6.1 of the 2017 edition);

f) Modified some content of "Thin Section Identification of Rock Casts" (see 6.2, 6.2 of the 2017 edition);

g) The nomenclature of shale and mudstone has been modified (see Chapter 7, Chapter 7 of the 2017 edition);

h) Added "Quality Requirements" (see Chapter 9);

i) Change the “Schematic diagrams of common special structures” from a normative appendix to an informative appendix (see Appendix A, Appendix A of the 2017 edition).

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the National Natural Gas Standardization Technical Committee (SAC/TC244).

This document was drafted by: China National Petroleum Corporation Southwest Oil and Gas Field Branch Exploration and Development Research Institute, China National Petroleum Corporation Exploration and Development Research Institute of Daqing Oilfield Co., Ltd., Southwest Petroleum University, China Petrochemical Corporation Petroleum Exploration and Development Research Institute of PetroChina Co., Ltd., Xinjiang Oilfield Company of PetroChina Co., Ltd., and Sinopec East China Oil and Gas Branch of China National Petroleum Corporation, China National Petroleum Corporation Sichuan Qing Drilling Engineering Co., Ltd., Geological Exploration and Development Research Institute, CNOOC Energy Development Engineering Technology Branch of Yanchang Petroleum Co., Ltd. and Research Institute of Shaanxi Yanchang Petroleum (Group) Co., Ltd.

The main drafters of this document are: Yan Yuxia, Kong Lingming, Luo Zhong, Gao Bo, Wang Li, Tang Hongming, Man Ling, Yu Xiaolu, Zhou Jixian, Wang Xingzhi, Tian Hua, Li Hui, Pu Xiaoqian, Wan Huan, Jia Pengtao, Hong Shuxin, Lei Haiyan, Zang Chunyan, Ma Xiaodong, and Wu Chunyan.

This document was first published in 2017 and this is the first revision.

1 Scope

This document specifies the equipment and reagents, identification procedures, identification content, nomenclature, identification report and quality for shale and mudstone thin section identification. Require.

This document is applicable to the identification of shale and mudstone thin sections in shale oil and gas exploration and development.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.

SY/T 5368 Rock thin section identification SY/T 5788 Specification for geological logging of oil and gas wells SY/T 5913 Rock slice preparation method

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Equipment and Reagents