Modified resin sand consolidation agent as well as preparation method and application thereof

A technology of modified resin and sand-fixing agent, applied in chemical instruments and methods, earth-moving drilling, and fluid production, etc., can solve the problems of oil well sand production affecting production, downhole screen blockage, pump stuck, etc., and the initial solidification time can be reached. Controllable, high consolidation strength, small formation damage

Active Publication Date: 2013-04-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current sand control pumps, sand control screens, deep formation sand control and other measures cannot effectively prevent and control muddy fine silt, often causing pump jams or downhole screens to be blocked, unable to ensure normal production of oil wells, seriously restricting the block effective development of
[0003] It is necessary to develop new sand control technology to solve the problem that sand production in oil wells affects production

Method used

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  • Modified resin sand consolidation agent as well as preparation method and application thereof
  • Modified resin sand consolidation agent as well as preparation method and application thereof
  • Modified resin sand consolidation agent as well as preparation method and application thereof

Examples

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Embodiment 1

[0051] Composition and preparation of the modified resin sand consolidation agent of the present embodiment:

[0052] Main agent: E-51 epoxy resin produced by Hangzhou Wuhuigang Adhesive Co., Ltd. (epoxy equivalent 185-200g / eq; epoxy value 0.48-0.54eq / mg; viscosity 10000-25000Pa·S / 25℃), 100 parts by weight;

[0053] Curing agent: ethylenediamine, 6.4 parts by weight;

[0054] Softening agent: dibutyl ester, 15 parts by weight;

[0055] Diluent: acetone, 22 parts by weight;

[0056] Silane coupling agent: γ-(2,3-glycidoxy)propyltrimethoxysilane, 2 parts by weight.

[0057] Glass fiber: 2-3 mm in length, about 20 μm in diameter, 10 parts by weight;

[0058] Heat the above main agent epoxy resin until the fluidity becomes better, add diluent, and stir fully; then add softener and coupling agent in turn, stir fully; add curing agent, stir rapidly; and add glass fiber under stirring, Stir evenly to obtain the modified resin sand consolidation agent of the present invention.

...

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Abstract

The invention relates to a modified resin sand consolidation agent as well as a preparation method and an application of the modified resin sand consolidation agent. The sand consolidation agent mainly consists of epoxy resin as a main agent, 6.0-7.0% of a curing agent, 15% of a softener, 20-22% of a diluent, 2% of a coupling agent and 10% of glass fiber; and the dosages of the other components expect the epoxy resin is weighed by 100% of the epoxy resin in percentage by weight. The preparation comprises that the modified resin sand consolidation agent is used for preventing and curing sand production in oil wells. The application method comprises the steps of: pre-treating the stratum by using pre-cleaning fluid, then pouring the sand consolidation agent from an oil tube, and finally replacing the sand consolidation agent to the deep of the stratum by using replacement pore-broadening liquid. The formula of the sand consolidation agent disclosed by the invention can solve the problem of influence of sand production in oil wells on the production and is suitable for different sand grains.

Description

technical field [0001] The invention relates to a modified resin sand-consolidating agent and its preparation method and application. Background technique [0002] The type of sand produced in the Leijia Block of Gaosheng Oilfield is mainly formation fine sand, with a particle size of about 0.1mm, and most oil wells produce muddy fine silt. By taking sand samples for analysis, the median particle sizes were determined to be 0.15 mm and 0.18 mm, respectively. The current sand control pumps, sand control screens, deep formation sand control and other measures cannot effectively prevent and control muddy fine silt, often causing pump jams or downhole screens to be blocked, which cannot guarantee the normal production of oil wells, seriously restricting the block effective development. [0003] It is necessary to develop new sand control technology to solve the problem that sand production in oil wells affects production. Contents of the invention [0004] An object of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/56C08L63/02C08K7/14C08K5/11C08K5/5435E21B43/02
Inventor 潘建华高本成李加庆赵云峰尹华肖立新何勇马威张学斌
Owner PETROCHINA CO LTD
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