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Raw material formula and production method of bentonite for well drilling

A technology of bentonite and raw materials, applied in the direction of chemical instruments and methods, drilling compositions, etc., to achieve the effects of speeding up work, improving engineering quality, and improving efficiency

Inactive Publication Date: 2012-12-05
绵阳堃山矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a raw material formula and production method of bentonite for drilling with better lubricating effect and film forming effect in view of the deficiency of bentonite for drilling at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Get 94.8 kilograms of calcium-based soils, 3 kilograms of alkali powder, 1 kilogram of carboxymethyl cellulose, and 1.2 kilograms of polyacrylamide for subsequent use; 94.8 kilograms of calcium-based soils are pulverized in a pulverizer, and are transferred to a pair of rollers for roller treatment, and then Add granular calcium-based soil into the mixer through a box feeder, add water and stir, then add 3 kg of alkali powder, 1 kg of carboxymethyl cellulose, and 1.2 kg of polyacrylamide into the mixer, and take it out and stack it after it has fully reacted One week to half a month, then dry, and finally use a ray mill to grind and sieve to get the finished product of bentonite for drilling.

[0021] After passing the inspection, the performance of each index is up to standard, as follows:

[0022] Viscometer (600r / min reading) = 34 (required ≥ 30); yield (plastic viscosity) = 4.5 (required ≤ 6); filtration loss (cm3) = 14.8 (required ≤ 16); fineness modulus = 1.3 (re...

Embodiment 2

[0024] Get 92 kilograms of calcium-based soils, 5 kilograms of alkali powder, 1.5 kilograms of carboxymethyl cellulose, and 1.5 kilograms of polyacrylamide for subsequent use; 92 kilograms of calcium-based soils are pulverized in a pulverizer, and are transferred to a double-roll machine to carry out double-roll processing, and then Add granular calcium-based soil into the mixer through a box feeder, add water and stir, then add 5 kg of alkali powder, 1.5 kg of carboxymethyl cellulose, and 1.5 kg of polyacrylamide into the mixer, and take it out and stack it after it has fully reacted One week to half a month, then dry, and finally use a ray mill to grind and sieve to get the finished product of bentonite for drilling.

[0025] After passing the inspection, the performance of each index is up to standard, as follows:

[0026] Viscometer (600r / min reading) = 38 (required ≥ 30); yield (plastic viscosity) = 5 (required ≤ 6); fluid loss (cm3) = 13.5 (required ≤ 16); fineness modul...

Embodiment 3

[0028] Get 96 kilograms of calcium-based soils, 2 kilograms of alkali powder, 1 kilogram of carboxymethyl cellulose, and 1 kilogram of polyacrylamide for subsequent use; 96 kilograms of calcium-based soils are pulverized in a pulverizer, and are transferred to a pair of rollers for roller treatment, and then Add granular calcium-based soil into the mixer through a box feeder, add water and stir, then add 2 kg of alkali powder, 1 kg of carboxymethyl cellulose, and 1 kg of polyacrylamide into the mixer, and take it out and stack it after it has fully reacted One week to half a month, then dry, and finally use a ray mill to grind and sieve to get the finished product of bentonite for drilling.

[0029] After passing the inspection, the performance of each index is up to standard, as follows:

[0030] Viscometer (600r / min reading) = 32 (required ≥ 30); yield (plastic viscosity) = 4.5 (required ≤ 6); fluid loss (cm3) = 15.2 (required ≤ 16); fineness modulus = 2.1 (required ≤ 2.5);...

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Abstract

The invention discloses a raw material formula and production method of bentonite for well drilling. The mass percentage of raw materials is as follow: 92-96% of calcium-based soil, 2-5% of alkali powder, 0.5-1.5% of carboxymethylcellulose, and 1-1.5% of polypropanamide. The invention also discloses a method for producing bentonite for well drilling, wherein the process flow is: raw ore of calcium-based soil, smashing, rolling, feeding, stirring with water, adding alkali powder, carboxymethylcellulose, polypropanamide and stirring, stacking for one week to half a month after reaction, drying, grinding, and sieving. The application of bentonite produced in the method in petroleum geology drilling and non-permeation project of power stations, reservoirs and dams as well as the pipe-jacking construction of cities can lubricate the drill pipe and the drill better and take away the rock debris, and form a mud wall which is thin, but strong and staunch.

Description

technical field [0001] The invention relates to a bentonite raw material formula and a production method, in particular to a bentonite raw material formula and a production method for drilling with better lubricating effects and film forming effects, and belongs to the field of bentonite production. Background technique [0002] Bentonite is a clay mineral with montmorillonite as the main component. It has strong water absorption, can absorb water equivalent to 8 times its own volume, expands 10 to 30 times in volume, and is suspended and gelled in aqueous solution. . When doing oil and gas drilling and other work, mud is used to cool the drill bit, remove debris, protect the well wall and balance the ground pressure. Bentonite has good dispersibility and large slurry output, so it is an ideal material for making drilling mud. For bentonite used as drilling mud, the most important technical requirements are suspension properties, wet sieving analysis and moisture content. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/20C09K8/24
Inventor 江浩
Owner 绵阳堃山矿业有限公司
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