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Anti-gas-channeling grouting material additive and application method thereof

A technology of grouting materials and admixtures, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of easy flocculation, poor control of cement slurry rheological properties, water loss of latex cement slurry, and thickening time Difficult to control and other problems, to achieve the effect of reducing water loss and improving rheological properties

Inactive Publication Date: 2012-10-17
沈尚超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, latex modified cement slurry is useful. This method can prepare latex cement slurry with anti-gas channeling and toughness properties, but the rheological properties of the cement slurry cannot be well controlled. The usual method is to add Water reducer is used as an additive, but latex is easy to flocculate when it encounters cement slurry with high calcium ion content, and the water loss and thickening time of latex cement slurry are not easy to control

Method used

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  • Anti-gas-channeling grouting material additive and application method thereof

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Embodiment 1

[0010] An admixture for anti-gas channeling grouting material, which consists of 10 parts by weight of sodium lauryl sulfonate, 5 parts of sodium hydroxymethyl carboxylate, cetyl polyoxyethylene ether dimethyl octyl ammonium chloride 3 parts, 1 part of polyacrylamide with a molecular weight of 2000-5000.

[0011] The method of using the admixture: dissolve the admixture with 20 times its mass in deionized water, add an admixture solution of 3% of the latex mass to the latex (the present invention uses commercially available styrene-butadiene latex), and stir evenly to form Latex modifier: Mix Portland cement with twice its mass of water and mix well, add 10% of the mass of Portland cement latex modifier under stirring state, and mix well to be used as grouting material.

Embodiment 2

[0013] An admixture for anti-gas channeling grouting material, which consists of 20 parts by weight of sodium lauryl sulfonate, 12 parts of sodium hydroxymethyl carboxylate, cetyl alcohol polyoxyethylene ether dimethyl octyl ammonium chloride 5 parts, 3 parts of polyacrylamide with a molecular weight of 2000-5000.

[0014] The method of using the admixture: dissolve the admixture with 30 times its mass in deionized water, add an admixture solution with 5% of the latex mass to the latex (the commercially available styrene-butadiene latex used in the present invention), and stir evenly to form a latex Modifier: Mix Portland cement with twice its mass of water and stir well, add latex modifier with 20% of the mass of Portland cement under stirring state, and mix well to be used as grouting material.

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Abstract

The invention relates to an anti-gas-channeling grouting material additive and an application method thereof. The anti-gas-channeling grouting material additive comprises the components of, by weight: 10-20 parts of sodium lauryl sulfonate, 5-12 parts of hydroxymethyl sodium carboxylate, 3-5 parts of hexadecanol polyoxyethylene ether dimethyloctyl alkylammonium chloride, and 1-3 parts of polyacrylamide with molecular weight of 2000-5000. With the additive provided by the invention, a water loss of latex cement slurry can be substantially reduced, the rheological characteristics of the cement slurry can be improved, and the thickening time of the cement slurry can be controlled, such that the comprehensive performance of the cement slurry can satisfy well cementation requirements.

Description

technical field [0001] The invention discloses an anti-gas channeling grouting material admixture and a using method thereof. Background technique [0002] The problem of cement slurry anti-channeling has always been a subject of continuous research in the field of cementing engineering. The process of annular channeling is affected by many factors, such as formation and formation fluid characteristics, cement slurry performance, displacement efficiency, cement slurry hydration, cement and formation, and casing bonding. In the prior art, latex modified cement slurry is useful. This method can prepare latex cement slurry with anti-gas channeling and toughness properties, but the rheological properties of the cement slurry cannot be well controlled. The usual method is to add Water reducing agent is used as an admixture, but the latex is easy to flocculate when it encounters cement slurry with high calcium ion content, and the water loss and thickening time of latex cement sl...

Claims

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Application Information

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IPC IPC(8): C09K8/493
Inventor 沈尚超
Owner 沈尚超
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