NB/T 10121-2018Evaluating method of shale inhibition for drilling fluids (English PDF)
钻井液对页岩抑制性评价方法
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Issued by
NEA
Level / Type
Industry · Recommended
Issue date
December 25, 2018
Implementation date
May 1, 2019
Scope
NB/T 10121-2018 is the English-translated version of 钻井液对页岩抑制性评价方法.
The recommended energy industry standard NB/T 10121-2018 deals with the evaluation of how far a drilling fluid inhibits shale.
It describes the tests used for that purpose: the inhibited dispersion rate test, the cuttings recovery rate test, the relative inhibition rate test, the capillary suction time (CST) value test, the cohesive force characterization test and the immersion test.
Its stated field of use is the assessment of the shale inhibition effect of drilling fluids in shale gas fields, and other industries may follow it as a reference.
GB/T 6682, GB/T 16783.1, SY/T 5490 and SY/T 5613 are quoted in it. Issued on 25 December 2018, it has applied since 1 May 2019.
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Document preview — NB/T 10121-2018
National Standard of the People's Republic of China
- ICS
- 75.020
Issued by: National Energy Administration of the People's Republic of China
Contents
- 2 Normative references
2 Normative references
NB/T 10121-2018 cites the following standards, which apply in full or in part through the references made to them in its clauses.
GB/T 6682
GB/T 16783.1
SY/T 5490
SY/T 5613
......
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
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Related Standards
GB/T 16783.1-2025 — Petroleum and natural gas industries - Field testing of drilling fluids - Part 1: Water-based fluids
GB/T 6682-2008 — Water for analytical laboratory use - Specification and test methods
SY/T 5490-2016 — Test drilling with soil
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NB/T 10121-2018
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