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GB/T 46329-2025Organophilic clay for oil based drilling fluids (English PDF)

油基钻井液用有机土

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 5, 2025

Implementation date

May 1, 2026

Scope

GB/T 46329-2025 is the English-translated version of 油基钻井液用有机土.

GB/T 46329-2025 is the Chinese national standard covering the bentonite made oil-wettable by an amine treatment — the gel strength and the yield it builds in diesel or a synthetic base, the moisture and the fineness, and the suspension it gives the barite so the mud does not sag in a horizontal hole. First edition, in force from 1 May 2026. Issued on 5 October 2025, it has been in force since 1 May 2026.

Document preview — GB/T 46329-2025

National Standard of the People's Republic of China

ICS: 75.020
Classification: E 14

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative References1
3 Terms and Definitions1
4 Technical Requirements1
5 Instruments, Equipment, and Reagents2
5.1 Instruments and Equipment2
5.2 Reagents and Materials3
6 Test methods3
6.1 Appearance3
6.2 Drying loss3
6.3 Residue on sieve3
6.4 Residue from Ignition4
6.5 Bulk density4
6.6 Colloidal content4
6.7 Drilling fluid properties5
6.8 Accuracy Requirements5
7 Inspection Rules6
7.1 Batching6
7.2 Sampling6
7.3 Inspection6
7.4 Decision6
8 Packaging, labeling, transportation and storage6
8.1 Packaging6
8.2 Identification7
8.3 Transportation7
8.4 Storage7
9 Health, safety, and environmental protection requirements 7.7
9.1 Health and Safety Requirements7
9.2 Environmental Protection Requirements7

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Petroleum and Natural Gas (SAC/TC355).

This document was drafted by: China National Petroleum Corporation Great Wall Drilling Engineering Co., Ltd., and China National Petroleum Corporation Exploration and Development Research Institute.

Research Institute, China Petroleum Engineering Technology Research Institute Co., Ltd., Sinopec Petroleum Engineering Technology Research Institute Co., Ltd., CNOOC Oilfield Services Co., Ltd.

China Petroleum University (Beijing), Dagang Oilfield Branch of China National Petroleum Corporation, Bohai Oilfield Company of China National Petroleum Corporation Drilling Engineering Co., Ltd.

The main drafters of this document are: Yao Rugang, Luo Kai, Zhang Zhenhua, Zhang Lingying, Shu Yong, Zhang Xin, Wang Maogong, Han Zixuan, Gao Peng, Li Chao, and Jiang Guancheng.

Liu Weidong, Chen Leixu, He Lipeng, Zhang Tieming, Lu Yuzhou, Hu Yanan, Wang Jianhua, Jin Junbin, Miao Hailong, Zhu Guoqiang, Wang Xianguang, Wang Sunan Yuan Yuan, Zhang Xianbin, Zhang Kun, Cong Sunan.

Organic soil for oil-based drilling fluids

1 Scope

This document specifies the technical requirements, instruments and reagents, testing methods, testing rules, and packaging for organic clay used in oil-based drilling fluids.

Labelling, transportation and storage, health and safety and environmental protection requirements.

This document applies to the quality inspection and acceptance of organic soil for diesel-based drilling fluids and organic soil for white oil-based drilling fluids.

2 Normative references

GB/T 6003.1

GB/T 6678

GB/T 6679

GB/T 6682

GB/T 16783.1

GB/T 16783.2

GB 19147

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 colloidal ratio

The percentage of the total volume of the suspension formed by dispersing organic clay in the oil phase in oil-based drilling fluid.

4 Technical Requirements

The technical requirements for organic soil used in oil-based drilling fluids are shown in Tables 1 and 2.

Table 1 Technical Requirements for the Physicochemical Properties of Organic Soil for Oil-Based Drilling Fluids project Technical Requirements Diesel-based white oil-based Appearance. grayish-white or light yellow free-flowing powder Loss on drying/% <=4.0 Residue on sieve/% <= 5.0

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 6003.1 · GB/T 16783.1 · GB/T 16783.2

Editions of GB/T 46329

Edition	Title	Revision	Status
GB/T 46329-2025	Organophilic clay for oil based drilling fluids	current edition	Current

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