Preparation method of high-property organic bentonite

A bentonite and high-performance technology, which is applied in the field of preparation of high-performance organic bentonite, can solve the problems of poor gelation and viscosity-increasing and cutting effects, and achieve improved rheology and rock-carrying ability, interlayer spacing, and rheological performance effect

Active Publication Date: 2012-01-04
CHINA PETROCHEMICAL CORP +1
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, organic soils for drilling fluids on the market are generally poor in gelation and viscosity-increasing and cutting effects in white oil or diesel oil, so the preparation of organic soils for oil-based drilling fluids was studied

Method used

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  • Preparation method of high-property organic bentonite

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specific Embodiment approach

[0022] The specific embodiment: further illustrate content of the present invention below in conjunction with embodiment:

Embodiment 2

[0024] Example 2: Disperse 60 parts of sodium-based soil into 800 parts of deionized water, stir at high speed to obtain a stable suspension, adjust the pH value of the suspension to 7~8, and set aside; 22 parts of octadecyl trimethyl Ammonium chloride was dissolved in 200 parts of ethanol and stirred evenly to make it a clear and transparent solution for later use. Dissolve 11 parts of AEO in 100 parts of deionized water and stir evenly to make it a clear and transparent solution for later use. Under high-speed stirring, the octadecyltrimethylammonium chloride solution was quickly added to the suspension, reacted at 70°C for 1.5 hours, continued to add the AEO solution, and stirred for 1 hour. The product was cooled to room temperature, and the residual Cl in the product was repeatedly removed with deionized water - , filtered, and vacuum-dried the prepared organic bentonite at 75° C., crushed and passed through a 200-mesh sieve to obtain the organic bentonite product.

Embodiment 3

[0025] Embodiment 3: Disperse 65 parts of sodium-based soil into 800 parts of deionized water, stir at high speed to obtain a stable suspension, adjust the pH value of the suspension to 7~8, and set aside; 24.8 parts of octadecyl dimethyl Benzyl benzyl ammonium chloride was dissolved in 200 parts of ethanol and stirred evenly to make it a clear and transparent solution for later use. Dissolve 10.5 parts of stearyl polyoxyethylene ether in 100 parts of deionized water, stir evenly, and make it a clear and transparent solution for later use. Under high-speed stirring, quickly add octadecyl dimethyl benzyl ammonium chloride solution to the suspension, react at 70°C for 1.5 hours, continue to add octadecyl polyoxyethylene ether solution, and react for 1 hour . The product was cooled to room temperature, and the residual Cl in the product was repeatedly removed with deionized water - , filtered, and vacuum-dried the prepared organic bentonite at 70° C., crushed and passed through...

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Abstract

The invention belongs to the technical field of petrochemical industry and relates to a preparation method of high-property organic bentonite for an oil-based drilling liquid. The preparation method comprises the following steps: dissolving 50-70 parts of sodium-based bentonite dry material in 600-900 parts of deionized water so as to form a suspension system a; mixing and dissolving 15-30 parts of quaternary ammonium salt organic modifier in 100-300 parts of solvent so as to form a homogenous system b; dissolving 10-15 parts of intercalation agent in 100-150 parts of solvent so as to form a homogenous system c; adding a solution b in the suspension system a, and reacting for 1-2 hours at the temperature of 70-90 DGE C so as to form a homogenous system d; adding a solution c in the suspension system d, and reacting for 1-2 hours at the temperature of 70-90 DGE C; and cooling a product to room temperature, washing off redundant ions in the product, filtering, and finally, drying a solid product in the vacuum environment at the temperature of 60-80 DEG C, smashing and screening so as to obtain the product high-property organic bentonite. By using the method provided by the invention, the property of the organic bentonite can be greatly improved, and the high-quality organic bentonite is prepared, thereby being beneficial to improvement of rheological behavior and debris carryingcapability of a drilling liquid.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, relates to the technical field of organic soil for drilling fluid, in particular to a preparation method of high-performance organic bentonite. Background technique [0002] Bentonite is a hydrous clay mineral mainly composed of montmorillonite, molecular formula: Na x (H 2 O) 4 (Al 2-X Mg 0.83 ) Si 4 o 10 )(OH) 2 , due to its special properties, such as: swelling, cohesiveness, adsorption, catalytic, thixotropy, suspension and cation exchange, etc., it is used in various fields. my country's bentonite mineral resources are very rich, and its content is second only to the United States, ranking second in the world. However, its deep processing and utilization are far behind foreign countries. It has been in the initial stage of development and application. In recent years, the research work on the deep processing and utilization of bentonite has only been carried out. Organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/44
Inventor 董天雷田先国孙远龙
Owner CHINA PETROCHEMICAL CORP
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