Compound bentonite raw material for seawater drilling fluid as well as preparation method and application thereof

A technology of drilling fluid and bentonite, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of easy fermentation, increased cost of drilling or directional drilling, blackening and odor, etc., and achieve the effect of slow fermentation speed

Inactive Publication Date: 2020-11-10
南京惠利通膨润土科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current seawater drilling fluid prepared from seawater bentonite and seawater is easy to ferment during use, and usually turns black and becomes smelly after 7-14 days, and its performance index drops significantly, so it is necessary to re-prepare the seawater drilling fluid. The cost of drilling or directional drilling will increase, the quality of drilling will be affected, and the cycle will be extended

Method used

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  • Compound bentonite raw material for seawater drilling fluid as well as preparation method and application thereof
  • Compound bentonite raw material for seawater drilling fluid as well as preparation method and application thereof
  • Compound bentonite raw material for seawater drilling fluid as well as preparation method and application thereof

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Effect test

Embodiment 1

[0031] This embodiment provides a compound bentonite raw material for seawater drilling fluid, which consists of the following components in parts by weight:

[0032] Sodium bentonite: 1000 parts; anionic cellulose: 38 parts; sodium carbonate: 18 parts; xanthan gum: 8 parts; HM-modified polymer fluid loss additive: 8 parts; guar gum: 6 parts; polypropylene Amide: 0.3 part and copper sulfate: 0.08 part.

[0033] This embodiment also provides a method for preparing a compound bentonite raw material for seawater drilling fluid, comprising the following steps:

[0034] Get raw materials according to the following parts by weight: 1000 parts; Anionic cellulose: 38 parts; Sodium carbonate: 18 parts; Xanthan gum: 8 parts; HM-modified polymer fluid loss reducer: 8 parts; Guar gum: 6 parts part; polyacrylamide: 0.3 part and copper sulfate: 0.08 part, stir and mix evenly to obtain the composite bentonite raw material for seawater drilling fluid.

[0035] Among them, anionic cellulose ...

Embodiment 2

[0042] This embodiment provides a compound bentonite raw material for seawater drilling fluid, which consists of the following components in parts by weight:

[0043] Sodium bentonite: 1000 parts; anionic cellulose: 42 parts; sodium carbonate: 22 parts; xanthan gum: 12 parts; HM-modified polymer fluid loss control agent: 12 parts; guar gum: 10 parts; polypropylene Amide: 0.5 part and copper sulfate: 0.12 part.

[0044] This embodiment also provides a method for preparing a compound bentonite raw material for seawater drilling fluid, comprising the following steps:

[0045] Get raw materials according to the following parts by weight: sodium bentonite: 1000 parts; anionic cellulose: 42 parts; sodium carbonate: 22 parts; xanthan gum: 12 parts; HM-modified polymer fluid loss reducer: 12 parts; Seoul gum: 10 parts; polyacrylamide: 0.5 parts and copper sulfate: 0.12 parts, stirred and mixed evenly to obtain the compound bentonite raw material for seawater drilling fluid.

[0046]...

Embodiment 3

[0053] This embodiment provides a compound bentonite raw material for seawater drilling fluid, which consists of the following components in parts by weight:

[0054] Sodium bentonite: 1000 parts; anionic cellulose: 40 parts; sodium carbonate: 20 parts; xanthan gum: 10 parts; HM-modified polymer fluid loss additive: 10 parts; guar gum: 8 parts; polypropylene Amide: 0.4 part and copper sulfate: 0.1 part.

[0055] This embodiment also provides a method for preparing a compound bentonite raw material for seawater drilling fluid, comprising the following steps:

[0056] The raw materials are taken according to the following parts by weight: sodium bentonite: 1000 parts; anionic cellulose: 40 parts; sodium carbonate: 20 parts; xanthan gum: 10 parts; HM-modified polymer fluid loss reducer: 10 parts; Seoul gum: 8 parts; polyacrylamide: 0.4 part and copper sulfate: 0.1 part, stirred and mixed evenly to obtain the compound bentonite raw material for seawater drilling fluid.

[0057] ...

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Abstract

The invention relates to a compound bentonite raw material for seawater drilling fluid as well as a preparation method and application of the compound bentonite raw material, and belongs to the technical field of seawater drilling fluid. The compound bentonite raw material for the seawater drilling fluid is prepared from the following components in parts by weight: 1000 parts of sodium bentonite;38-42 parts of anionic cellulose; 18-22 parts of sodium carbonate; 8-12 parts of xanthan gum; 8-12 parts of a filtrate reducer; 6-10 parts of guar gum; 0.3-0.5 part of polyacrylamide; and 0.08-0.12 part of a preservative. The invention further provides a preparation method and application of the compound bentonite raw material for the seawater drilling fluid. The seawater drilling fluid prepared from the compound bentonite raw material for the seawater drilling fluid is slow in fermentation speed, and does not have obvious blackening and stinking and performance index reduction phenomena within 6-8 months.

Description

technical field [0001] The invention belongs to the technical field of seawater drilling fluid, and in particular relates to a compound bentonite raw material for seawater drilling fluid, a preparation method and application thereof. Background technique [0002] Seawater drilling fluid is mainly used in drilling engineering in deep-sea oil and gas drilling and development. The performance of seawater drilling fluid directly affects the quality, cost and cycle of deepwater drilling. Among them, bentonite is the main slurry material for preparing seawater drilling fluid. Bentonite and seawater are mixed and stirred to make seawater drilling fluid. Over the past few years, seawater drilling fluid has been used more and more in the field of horizontal directional drilling crossing construction. [0003] However, the current seawater drilling fluid prepared from seawater bentonite and seawater is easy to ferment during use, and usually turns black and becomes smelly after 7-14...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/24
CPCC09K8/24
Inventor 赵光亚陈波
Owner 南京惠利通膨润土科技有限公司
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