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GB/T 10238-2015Oil well cement (English PDF)

油井水泥

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Level / Type

National · Recommended

Issue date

September 11, 2015

Implementation date

August 1, 2016

Scope

GB/T 10238-2015 is the English-translated version of 油井水泥.

GB/T 10238-2015 is the Chinese standard "Oil well cement". Its scope clause reads: This standard specifies the definition of six levels of oil well cement, requirements, test methods, marking, packaging and the like.

This standard applies to A, B, C, D, G and H oil well cement production and testing. Its clauses include terms and definitions.

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Document preview — GB/T 10238-2015

National Standard of the People's Republic of China

ICS: 91.100.10
Classification: Q 11
Replacing: GB 10238-2005

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 2 Technical Requirements
4.1 level and type of chemical and physical requirements
4.2 test time and equipment
5 No. 5 and sampling
5.1 Number
6 fineness test
6.1 Method
6.2 Requirements
7 free fluid, compressive strength and thickening time of the preparation of test water slurry
7.1 Instrument
7.2 Step
8 free fluid test
8.1 Instrument
8.2 Calibration
8.3 Test procedure
8.4 Calculation of the free liquid content
8.5 Acceptance Requirements
9 compressive strength test
9.1 Instrument
9.2 Test procedure
9.3 compressive strength acceptance requirements
10 thickening time test
10.1 Instrument
10.2 Calibration
10.3 Step
10.4 thickening time and consistency
10.5 Acceptance Requirements
11 29 Flag
12 Packaging
Appendix A (informative) This standard and ISO 10426-1.2009 structure change compared to the situation
Annex B (informative) This standard and ISO 10426-1.2009 technical differences and their causes

1 Scope

This standard specifies the definition of six levels of oil well cement, requirements, test methods, marking, packaging and the like.

This standard applies to A, B, C, D, G and H oil well cement production and testing.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 176 chemical analysis of cement

GB/T 5483 natural gypsum

GB/T 8074 Determination of specific surface of cement - Blaine method

GB/T 12573 cement sampling method

GB/T 26748 cement grinding aids

JC/T 2000 oil well cement physical performance test equipment

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Oil well cement additives

Water was added to the slurry to improve the performance of the material.

Note. The performance improvement usually include setting time (use of retarder or accelerator), dehydration, and viscosity.

3.2 Pressure device thickening

For grout mixing and modulation device.

Note. not for thickening measurement time.

3.3 Consistency unit --- Burdon (Bc) Beardenunitofconsistency

Measured by the pressure thickening slurry consistency.

3.4 Portland cement

The Portland cement clinker (mainly composed of calcium silicates and aluminates hydraulic composition) product with an appropriate amount of one or more types of ground gypsum formed.

3.5 Pressure thickening device

At a predetermined temperature and pressure, for the determination of water slurry thickening time of the instrument.

3.6 Free fluid

Under standing conditions, away from the aqueous slurry precipitated colored or colorless liquid.

GB/T 12960 | GB/T 3183 | GB/T 12573 | GB/T 47189 | GB/T 20472 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 61 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

GB/T 47189-2026Test method for the elastic modulus of oil well cement slurry

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