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Drilling fluid material, preparation thereof and application thereof

A drilling fluid and polymer technology, applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of inconvenient operation and handling on site, meet the requirements of good geological drilling, be convenient to use on site, and meet the requirements of geological drilling Effect

Inactive Publication Date: 2012-07-25
BEIJING INST OF EXPLORATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If complex formations are encountered during deep drilling, the performance and maintenance requirements for drilling fluid will be more stringent, which will bring great inconvenience to on-site operation and treatment
In summary, there is no composite drilling material that can meet the above-mentioned needs at present, and the present invention is proposed on this basis

Method used

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  • Drilling fluid material, preparation thereof and application thereof
  • Drilling fluid material, preparation thereof and application thereof
  • Drilling fluid material, preparation thereof and application thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with specific examples, so that those skilled in the art can better understand the present invention and implement it, but the given examples are not intended to limit the present invention.

[0027] The preparation method of the drilling fluid material provided by the present invention is to dissolve 0.5-6 parts of soda ash, 1-25 parts of fluid loss reducer, 1-20 parts of polymer diluent and 1-10 parts of viscosifier in 20-30 parts Mix it in water at 40°C~50°C to form a jelly. Mix the jelly with 50-95 parts of bentonite and age for 4 hours, and finally knead it in a kneader and dry it at 45-60°C.

[0028] Wherein, the fluid loss reducing agent can be one of hydrolyzed polyacrylonitrile ammonium salt and carboxymethyl cellulose sodium salt or a mixture thereof, wherein the hydroxymethyl cellulose sodium salt is preferably low-viscosity hydroxymethyl cellulose sodium salt. Specifically, such as: hydrol...

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Abstract

The invention discloses a drilling fluid material. The drilling fluid material comprises the following components, by weight, 50-95 parts of bentonite, 0.5-6 parts of soda ash, 1-25 parts of a fluid loss agent, 1-20 parts of a polymer diluent and 1-10 parts of a tackifier. The drilling fluid material provided in the invention, which can be conveniently used, is directly mixed with water and is stirred, so the obtained material can be used for the drilling work. The drilling fluid material which has the characteristics of strong antipollution capability and strong inhibition capability is suitable for the geological drilling of salt gypsum stratums, and broken and water-sensitive stratums.

Description

technical field [0001] The invention relates to a drilling fluid material used in the field of geological drilling and its preparation and application. Background technique [0002] With the development of geological drilling work in a wider and deeper direction, the formations encountered are also more complex and changeable, often encounter broken, water-sensitive formations and water-soluble formations such as salt rock, potassium salt, gypsum, mirabilite, carnallite, etc. . When drilling in complex formations (especially water-sensitive formations and fractured formations), problems such as hole wall instability, scaling on the inner wall of the drill pipe and low mud technology level of the construction unit are commonly encountered. This puts forward strict requirements on the performance and maintenance of the drilling fluid. If the drilling fluid is not used and maintained properly, a series of in-hole accidents such as stuck drill, collapse and buried drill will oc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/24
Inventor 陶士先胡继良付帆纪卫军王新萍李晓东单文军李艳宁
Owner BEIJING INST OF EXPLORATION ENG