Wet blend fiber for well cementation, and preparation method thereof

A technology of fiber and wet mixing, which is applied in the field of wet mixing fiber for well cementing and its preparation, which can solve the problems of difficult mixing of fibers and achieve the effects of improving leakage prevention performance, facilitating cementing operation, and simple manufacturing process

Inactive Publication Date: 2020-01-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above problems in the prior art, the present invention provides a wet-mixed fiber for cementing, which can be used in the cement slurry configuration of oil and gas wells, and solves the problem that the fiber dry-mixing is not easy to mix in the cementing process, avoiding The labor process of manual spreading in well cementing construction improves labor productivity

Method used

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  • Wet blend fiber for well cementation, and preparation method thereof
  • Wet blend fiber for well cementation, and preparation method thereof
  • Wet blend fiber for well cementation, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add hydrochloric acid to 100g of distilled water to make the pH of the solution 4.0, add 5g of polyether ammonium sulfate, add 20g of polypropylene fiber, stir and disperse at a speed of 1400r / min in the stirring disperser for 2 hours, and add 5g of ethylene glycol Disodium amine tetraacetate, stir the disperser at a speed of 1400r / min for 5min, add 20g of ethylene glycol, add 10g of polyoxyethylene sorbitan fatty acid ester, add 5g of simethicone, and stir the disperser After stirring at a speed of 1400r / min for 5min, add 40g of methacryloxypropyltrimethoxysilane, and stir with a stirring disperser at a speed of 1400r / min for 20min to prepare an aqueous fiber suspension.

Embodiment 2

[0043] Add hydrochloric acid to 100g of distilled water to make the pH of the solution 4.0, add 10g of polyether ammonium sulfate, add 40g of carbon fiber, stir and disperse at a speed of 1400r / min in the stirring disperser for 2 hours, add 10g of ethylenediaminetetra Disodium acetate, stir the disperser at 1400r / min for 5min, add 40g of ethylene glycol, add 20g of polyoxyethylene sorbitan fatty acid ester, add simethicone 10g, stir the disperser at 1400r / min After stirring at a speed of 1400 r / min for 5 minutes, add 50 g of methacryloxypropyl trimethoxysilane, and stir at a speed of 1400 r / min for 20 minutes to prepare an aqueous fiber suspension.

Embodiment 3

[0045] Add hydrochloric acid to 100g of distilled water to make the pH of the solution 4.0, add 2.5g of polyether ammonium sulfate, add 5g of polyester fiber, stir and disperse at a speed of 1400r / min in the stirring disperser for 2 hours, add 2.5g Disodium ethylenediamine tetraacetate, after stirring for 5 minutes with a stirring disperser at a speed of 1400r / min, add 12.5g of ethylene glycol, add 5g of polyoxyethylene sorbitan fatty acid ester, and add 2.5g of simethicone After stirring with a stirring disperser at a speed of 1400r / min for 5min, add 20g of methacryloxypropyltrimethoxysilane, and stir with a stirring disperser at a speed of 1400r / min for 20min to prepare an aqueous fiber suspension.

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Abstract

The invention discloses a wet blend fiber for well cementation, and a preparation method thereof, wherein the wet blend fiber contains acidic water, fiber, a dispersing agent, a complexing agent, water-soluble alcohol, an emulsifying agent, a defoaming agent and a surface treating agent. According to the invention, the fiber aqueous suspension prepared by the method is high in solid content, can effectively improve the toughness of set cement, can be subjected to wet mixing in well cementation construction, improves the leakage-proof performance of cement paste, and is beneficial to well cementation construction operation.

Description

technical field [0001] The invention relates to the field of petroleum cementing, in particular to a cementing wet-mixed fiber used for oil and gas well cementing and a preparation method thereof. Background technique [0002] As a toughening agent, fibers are widely used in oil and gas well cementing projects. After the cementing operation, the cement slurry solidifies to form cement stones. The cement stones are required to effectively isolate the formation and provide protection and protection for the casing. Support, which is crucial for subsequent drilling and oil and gas production. As cement stone is a brittle material, affected by follow-up operations such as perforation, fracturing, and mining, as well as the complex forces of underground rock formations, it is easy to produce micro-cracks and micro-annulus, resulting in failure of the interlayer isolation of oil and gas wells, which is not conducive to oil and gas production and production. Increase production. R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/467
CPCC09K8/467C09K2208/08
Inventor 刘飞刘学鹏魏浩光刘仍光张林海杨红歧
Owner CHINA PETROLEUM & CHEM CORP
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