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Preparation method of drilling fluid shearing enhancer

A cutting agent and drilling fluid technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of increased drilling fluid workload, unstable drilling fluid performance, damage to oil and gas layers, etc., and achieve formation inhibition Effects of collapse and fracture, improvement of biodegradability, and balance of formation water activity

Inactive Publication Date: 2017-10-24
常州西夏墅东方工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the defects that the existing drilling fluid cutting agent is easy to fail at high temperature, which makes the performance of the drilling fluid unstable, the workload of maintaining the drilling fluid increases, and also damages the oil and gas layers, a kind of Preparation method of drilling fluid cutting agent

Method used

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  • Preparation method of drilling fluid shearing enhancer

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preparation example Construction

[0021] Catalyst preparation: mix platinum and Raney nickel at a mass ratio of 1:1.

[0022] Preparation of crosslinking agent: Mix glutaraldehyde and diethylenetriamine at a mass ratio of 3:1.

[0023] Choice of emulsifier: any one of fatty acid polyoxyethylene ester and alkylphenol polyoxyethylene ether.

[0024] The initiator is selected as dicumyl peroxide.

[0025] The auxiliary agent is sodium dodecylsulfonate.

[0026] The preparation method of drilling fluid cutting agent of the present invention comprises the following steps:

[0027] (1) According to the mass ratio of 4~6:8~10:3~5:7~9, put methyl methacrylate, ethylene glycol, butyl acrylate and propylene oxide into the reactor, and use hydrogen oxidation Adjust the pH to 8.5-9.0 with sodium solution, then add zinc stearate with 0.6-0.9% ethylene glycol mass, use nitrogen protection, and react at 95-105°C for 4-9 hours;

[0028] (2) After the reaction, cool to room temperature, add chitosan and vinyltrimethoxysila...

example 1

[0032] Catalyst preparation: mix platinum and Raney nickel at a mass ratio of 1:1.

[0033] Preparation of crosslinking agent: Mix glutaraldehyde and diethylenetriamine at a mass ratio of 3:1.

[0034] Choice of emulsifier: any one of fatty acid polyoxyethylene ester and alkylphenol polyoxyethylene ether.

[0035] The preparation method of drilling fluid cutting agent of the present invention comprises the following steps:

[0036] (1) According to the mass ratio of 4:8:3:7, put methyl methacrylate, ethylene glycol, butyl acrylate and propylene oxide into the reactor, use sodium hydroxide solution to adjust the pH to 8.5, and then Add zinc stearate with 0.6% ethylene glycol mass, use nitrogen protection, and react at 95°C for 4 hours;

[0037] (2) After the reaction, cool to room temperature, add chitosan and vinyltrimethoxysilane, the mass ratio of chitosan and vinyltrimethoxysilane is 3:2, and the mass of chitosan is ethylene di 35% of the mass of alcohol, mix well, let s...

example 2

[0041] Catalyst preparation: mix platinum and Raney nickel at a mass ratio of 1:1.

[0042] Preparation of crosslinking agent: Mix glutaraldehyde and diethylenetriamine at a mass ratio of 3:1.

[0043] Choice of emulsifier: any one of fatty acid polyoxyethylene ester and alkylphenol polyoxyethylene ether.

[0044] The initiator is selected as dicumyl peroxide.

[0045] The preparation method of drilling fluid cutting agent of the present invention comprises the following steps:

[0046] (1) According to the mass ratio of 5:9:4:8, put methyl methacrylate, ethylene glycol, butyl acrylate and propylene oxide into the reactor, use sodium hydroxide solution to adjust the pH to 8.8, and then Add zinc stearate with 0.8% ethylene glycol mass, use nitrogen protection, and react at 100°C for 7 hours;

[0047](2) After the reaction, cool to room temperature, add chitosan and vinyltrimethoxysilane, the mass ratio of chitosan and vinyltrimethoxysilane is 3:2, and the mass of chitosan is...

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Abstract

The invention discloses a preparation method of a drilling fluid shearing enhancer and belongs to the technical field of preparation of drilling fluid treatment agents. The preparation method comprises the following steps: putting methyl methacrylate, ethylene glycol, butyl acrylate and epoxy propane into a reactor; regulating the pH (Potential of Hydrogen) with a sodium hydroxide solution and then adding zinc stearate; reacting under the protection of nitrogen gas; then adding chitosan and vinyltrimethoxysilane and uniformly mixing and standing; then adding a catalyst and an initiator and carrying out modification reaction; after reacting, adding a cross-linking agent; reacting and discharging materials; filtering the discharged materials and collecting filtrate; after distilling, collecting distillation residues and uniformly mixing the distillation residues with sodium oxalate, an emulsifier and an auxiliary agent; collecting and stirring a mixture to obtain the drilling fluid shearing enhancer. The drilling fluid shearing enhancer prepared by the preparation method has relatively good high-temperature ageing resisting performance and still has a relatively good shearing enhancing effect under a high-temperature environment; the aim of suspending rock fragments on drilling fluid can be effectively realized; the drilling speed is improved and any damage to oil and gas reservoirs is not caused after the drilling fluid shearing enhancer is used.

Description

technical field [0001] The invention discloses a preparation method of a drilling fluid cutting agent and belongs to the technical field of preparation of drilling fluid treatment agents. Background technique [0002] With the increase of people's demand for energy and the development of drilling technology, the number of deep wells and ultra-deep wells is also increasing. During drilling, the deeper the wellbore, the higher the temperature inside the wellbore. Because all additives in drilling fluid will be oxidized and decomposed to lose their original structure under high temperature conditions, the rheology of drilling fluid is difficult to control, and the problem of high temperature resistance of drilling fluid is becoming more and more prominent. [0003] Since the performance stability of high-temperature deep well drilling fluid is an important indicator in the process of drilling deep and ultra-deep wells, choosing a suitable anti-high temperature treatment agent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
CPCC09K8/035
Inventor 恽玉新王磊潘宏梅
Owner 常州西夏墅东方工具有限公司
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