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A kind of silicate-cationic alkyl glucoside drilling fluid and preparation method thereof

A technology of alkyl glucoside and alkyl glucoside, which is applied in the field of silicate-cationic alkyl glucoside drilling fluid and its preparation, can solve problems such as poor anti-slump performance and difficult control of rheology, and reduce water activity, Improve the efficiency of the semi-permeable membrane and meet the effect of wellbore stability

Active Publication Date: 2019-05-17
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of existing water-based drilling fluids, such as poor inhibition and anti-slump properties and difficult control of the rheological properties of conventional silicate drilling fluids, and propose a silicate-cationic alkyl group with strong inhibition and plugging properties. The glucoside drilling fluid system achieves the goal of wellbore stability and safe drilling

Method used

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  • A kind of silicate-cationic alkyl glucoside drilling fluid and preparation method thereof
  • A kind of silicate-cationic alkyl glucoside drilling fluid and preparation method thereof
  • A kind of silicate-cationic alkyl glucoside drilling fluid and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Example 1: In 350ml of distilled water, with 8000-10000 rpm high-speed stirring, simultaneously add 0.35g xanthan gum, 3.5g low-viscosity sodium carboxymethylcellulose, 17.5g methyl glucoside, 3.5g Cationic methyl glucoside, after stirring at high speed for 10 minutes, add 3.5g of sulfonated lignite, 3.5g of calcium carbonate with a particle size range of 2.5-10 microns and 3.5g of cationic pitch, stir at high speed for 10 minutes, then add 35g of sodium silicate, 17.5g sodium chloride and 0.7g sodium hydroxide, after stirring at high speed for 20min, put it into the aging tank and get the density of 1.10g / cm without weight after 120℃ / 16h 3 Silicate-cationic alkyl glucoside drilling fluid.

[0031] By carrying out the characterization analysis of infrared spectrum to the drilling fluid system of example 1, such as figure 1 Shown: 1151cm -1 It is the stretching vibration peak of C-O-C, and it is determined to contain glucoside structure; 1419cm -1 It is the absorption...

Embodiment 2

[0032] Example 2: In 350ml of distilled water, with 8000-10000 rpm high-speed stirring, add 0.70g xanthan gum, 0.35g high viscosity sodium carboxymethyl cellulose, 5.25g low viscosity sodium carboxymethyl fiber at the same time element, 1.75g ​​zwitterionic sulfonate polymer, 17.5g methyl glucoside, 3.5g cationic methyl glucoside, after stirring at high speed for 15min, add 3.5g sulfonated lignite, 3.5g sulfonated phenolic resin-II, 3.5 g calcium carbonate with a particle size range of 2.5-10 microns, 3.5g emulsified asphalt, 10.5g potassium humate, 3.5g nanmu powder, after stirring at high speed for 20min, add 24.5g sodium silicate, 52.5g sodium chloride and 1.0g After stirring sodium hydroxide at high speed for 10 minutes, add 56g of barite and stir at high speed for 30 minutes, put it into an aging tank and put it into an aging tank at 120°C / 16h to obtain a density of 1.20g / cm 3 Silicate-cationic alkyl glucoside drilling fluid.

Embodiment 3

[0034] Example 3: In 350ml of distilled water, under the condition of high-speed stirring at 8000-10000 rpm, add 0.35g xanthan gum, 0.35g potassium polyacrylate, 7.0g low-viscosity sodium carboxymethylcellulose, 1.75g ​​amphoteric Ionic sulfonate polymer, 21g ethyl glucoside, 5.25g cationic methyl glucoside, after stirring at high speed for 20min, add 7.0g sulfonated lignite, 3.5g calcium carbonate with a particle size range of 2.5-10 microns and 3.5g emulsified Asphalt, 10.5g potassium humate, 3.5g Phoebe powder, after high speed stirring for 15min, then add 17.5g sodium silicate, 17.5g potassium chloride, 35g sodium chloride, 0.7g sodium hydroxide, after high speed stirring for 10min, then Add 56g of barite and stir at high speed for 30min, put it into the aging tank and get a density of 1.20g / cm after 120℃ / 16h 3 Silicate-cationic alkyl glucoside drilling fluid.

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Abstract

The invention discloses a silicate-cation alkyl glucoside drilling fluid and a preparation method thereof, and belongs to the technical field of drilling fluids in oilfield chemistry. The silicate-cation alkyl glucoside drilling fluid is prepared by mixing the following materials of 0.1%-0.3% of a fluid pattern regulator, 1%-2.5% of a filtrate reducer A, 1%-3% of a high-temperature-resistant filtrate reducer B, 3%-10% of silicate, 5-8% of alkyl glucoside, 1%-2% of cation alkyl glucoside, 2%-6% of a blocking agent, 5%-15% of an inorganic salt, 0.2%-0.35% of sodium hydroxide, 0-51% of barite and the balance of water according to the mass to volume ratio and then ageing at a high temperature. The drilling fluid provided by the invention can resist the temperature as high as 120 DEG C, the recovery rate of shale is more than 90%, and the blockage rate is more than 90%. The drilling fluid has the advantages of excellent rheological property, lubricity, high temperature resistance, inhibition, sealing ability, clay pollution resistance, and salt tolerance, and helps to keep the borehole diameter regular and keep a borehole wall stable in the drilling process.

Description

technical field [0001] The invention relates to a silicate-cationic alkyl glucoside drilling fluid and a preparation method thereof, belonging to the technical field of oilfield chemical drilling fluids. technical background [0002] For shale, mud shale or volcanic rock formations with complex geological structures, developed fractures, easily fractured formations, and strong water sensitivity, during the drilling process, downhole complexities such as formation slurry, well wall collapse, leakage, and pipe sticking are prone to occur. ACCIDENT. Wellbore stability has become a very complex technical problem often encountered in oil and gas drilling engineering. According to statistics, the world petroleum industry spends as much as 700 million U.S. dollars on dealing with well wall stability accidents every year. Therefore, effectively solving the problem of wellbore stability in the drilling process has become the focus and difficulty of current petroleum workers' resear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/10C09K8/06C09K8/03
CPCC09K8/03C09K8/06C09K8/10
Inventor 张麒麟黄宁宋士军孟丽艳甄剑武司西强谢俊张希红
Owner CHINA PETROCHEMICAL CORP
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