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High-temperature resistant grain profile control and water shutoff agent as well as production method and use method thereof

A plugging agent and high-temperature-resistant technology, applied in chemical instruments and methods, earthwork drilling, mining fluids, etc., can solve problems such as poor temperature resistance, high salinity, and incompatibility, and achieve high efficiency and high production efficiency. The effect of simple method and low cost

Active Publication Date: 2014-03-12
KARAMAY ZHENGCHENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]The granular plugging control agent currently used has poor temperature resistance and poor salinity resistance
The main raw material is granular profile control and water shutoff agent synthesized from acrylamide. This kind of profile control and water shutoff agent is not suitable for water-bearing oil layers with high temperature (above 90°C) and high salinity (above 10,000 mg / L). Oil layer suitable for reinjection of sewage in oil fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1, the high temperature resistant granular plugging agent is composed of: 0.05 to 9 parts of heptadecanoic acid, 0.05 to 8 parts of maleic anhydride, 0.03 to 6 parts of acrylamide, and 0.01 to 10 parts of humic acid 0.01 to 0.06 parts of N.N dimethylacrylamide, 20 to 50 parts of limestone, 0.1 to 5 parts of soil, 20 to 50 parts of shale, 0.01 to 1 part of polyvinyl alcohol, and 0.05 parts of calcium hydroxide servings to 2 servings.

Embodiment 2

[0011] Example 2, the high temperature resistant granular plugging agent consists of: 0.05 parts of seventeen carbonic acid, 0.05 parts of maleic anhydride, 0.03 parts of acrylamide, 0.01 part of humic acid, 0.01 part of N.N dimethylacrylamide, limestone 20 parts, 0.1 parts of soil, 20 parts of shale, 0.01 parts of polyvinyl alcohol, 0.05 parts of calcium hydroxide.

Embodiment 3

[0012] Example 3, the high temperature resistant granular plugging agent consists of: 9 parts of heptadecanic acid, 8 parts of maleic anhydride, 6 parts of acrylamide, 10 parts of humic acid, 0.06 parts of N.N dimethylacrylamide, limestone 50 parts, 5 parts of soil, 50 parts of shale, 1 part of polyvinyl alcohol, 2 parts of calcium hydroxide.

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PUM

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Abstract

The invention relates to the technical field of high-temperature resistant grain profile control and water shutoff agent used in oil exploitation and discloses a high-temperature resistant grain profile control and water shutoff agent as well as a production method and an application method thereof. The high-temperature resistant grain profile control and water shutoff agent consists of the following compositions of: heptadecanoic acid, maleic anhydride, acrylamide, humic acid, N. N-dimethyl acrylamide, limestone, bentonite, shale, polyvinyl alcohol and calcium hydroxide. The invention has the characteristics that: the preparation method and the production method of the high-temperature resistant grain profile control and water shutoff agent are simple, high in efficiency and low in cost; the heat resistance temperature can reach 140 DEG C, the mineralization degree can reach 200000 mg / L, the profile control and water shutoff pressure can reach 25 MPa, and a high water content oil layer can be effectively plugged.

Description

technical field [0001] The invention relates to the technical field of high-temperature-resistant granular plugging regulators used in petroleum exploitation, and relates to a high-temperature-resistant granular plugging regulator and its production and use methods. Background technique [0002] The currently used particle plugging agent has poor temperature resistance and poor salinity resistance. The main raw material is granular profile control and water shutoff agent synthesized from acrylamide. This kind of profile control and water shutoff agent is not suitable for water-bearing oil layers with high temperature (above 90°C) and high salinity (above 10,000 mg / L). It is suitable for the oil layer of oilfield reinjection sewage. Contents of the invention [0003] The invention provides a high-temperature-resistant granular plugging agent and its production method and application method, which overcomes the shortcomings of the prior art and has strong adaptability. It i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/42C08F289/00E21B43/22
Inventor 王国瑞
Owner KARAMAY ZHENGCHENG
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