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A kind of preparation method of bentonite for drilling mud

A drilling mud and bentonite technology, which is applied in the directions of drilling compositions, chemical instruments and methods, can solve problems such as inability to meet production, and achieve the effects of strong plasticity, simple preparation method and good thixotropy

Inactive Publication Date: 2015-08-19
董宪姝
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Problems solved by technology

The national standard of bentonite pulping rate is 16 cubic meters per ton, but the existing pulping rate is only 6-8 cubic meters per ton, which cannot meet the needs of production

Method used

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  • A kind of preparation method of bentonite for drilling mud

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Embodiment 1

[0019] A preparation method of bentonite for drilling mud, comprising the following steps:

[0020] (1) collect bentonite ore;

[0021] (2) the bentonite ore collected by above-mentioned steps (1) is analyzed by a light-increasing photometer, wherein the sodium ion exchange capacity (ammonium chloride method) in the bentonite is 30-80mg / 100g;

[0022] The exchange capacity is the amount of other ions in the ore that can be exchanged with the added sodium ions.

[0023] (3) Regulate sodium ion: adjust the bentonite ore after the above-mentioned step (2) to adjust the sodium ion, and supplement the sodium ion in the bentonite to 110mg / 100g by batching;

[0024] The specific method is: add 5% soda ash, 0.6% caustic soda and 1% magnesium oxide of the total weight;

[0025] (4) Accumulated sodium: accumulate the bentonite ore after adjusting the sodium ion in the above step (3), the time is 3-15 days; the summer temperature is high, it takes 3-7 days, and the winter temperature i...

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Abstract

The invention discloses a preparation method of bentonite for drilling mud. The method includes the steps of mining, sodium ion exchange capacity analysis, sodium ion regulation, accumulation sodium modification, drying and crushing, etc. The invention has the advantages that: the preparation method is simple, the use effect is good, the bentonite obtained by the method can be used to resist seawater and chemical polluted water, and can completely block seawater and chemical polluted water.

Description

technical field [0001] The invention relates to a preparation method of bentonite, in particular to a preparation method of bentonite for drilling mud, and belongs to the field of bentonite preparation. Background technique [0002] Bentonite is a hydrous aluminosilicate mineral with a 2:1 crystal structure. Its main component is montmorillonite. Bentonite is generally divided into calcium-based bentonite and sodium-based bentonite. Most of the bentonite on the market is artificial sodium-based calcium-based bentonite. Natural sodium-based bentonite is rare, so it is very rare. Artificial sodium bentonite is far inferior to natural sodium bentonite in some properties. The sodiumization of bentonite is to use the cation exchange characteristics of the montmorillonite flake structure to replace the high-priced calcium and magnesium ions. Its replacement process is: [0003] [0004] After the drilling mud uses bentonite, it can achieve the effects of protecting the well...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/14C09K8/05
Inventor 董宪姝
Owner 董宪姝
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