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Wax-cleaning wax-preventing agent for water-driving polymer-driving oil well

A technology of wax inhibitor and polymer flooding, which is applied in the field of wax removal and wax inhibitor, and can solve the problems of lack of wax removal and inhibitor products.

Inactive Publication Date: 2007-09-12
DAQING OILFIELD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the produced fluids of the existing water flooding and polymer flooding oil wells still lack a common wax removal and anti-wax product, and provide a wax removal and anti-wax agent for water flooding and polymer flooding oil wells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0004] Specific embodiment one: This embodiment is made of wax crystal improver TA1031: 10-16%, surfactant AE1910: 14-20%, co-solvent methanol: 15-25% and water: 45-55% by weight percentage . The production method of this embodiment is as follows: the wax crystal modifier, the surfactant, the co-solvent methanol and water are put into the container and mixed evenly according to the weight percentage.

specific Embodiment approach 2

[0005] Embodiment 2: This embodiment is made of wax crystal improver TA1031: 10%, surfactant AE1910: 14%, co-solvent methanol: 21% and water: 55% by weight percentage. Other compositions and methods are the same as those in Embodiment 1.

specific Embodiment approach 3

[0006] Specific Embodiment Three: This embodiment is made of wax crystal improver TA1031: 16%, surfactant AE1910: 20%, co-solvent methanol: 19% and water: 45% by weight percentage. Other compositions and methods are the same as those in Embodiment 1.

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Abstract

The invention relates to water drive gathering oil well use paraffin removal paraffin inhibitor. It is made up from 10-16% wax crystal improver TA1031, 14-20% portions of surface activator AE1910, latent solvent methanol 15-25 portions and water 45-55% portions. The performance index is that: proportion 0.98-1.03, solidification point -46 degree centigrade, PH value 7-9; paraffin control ratio is over 77%,; viscosity reduction ratio is over 76%. The invention has high flash point and is save for using. It is no causticity to device and is suited to use in winter.

Description

technical field [0001] The invention relates to a wax remover and anti-wax agent for oil production wells in oil fields. Background technique [0002] The oil field has changed from a single water flooding development to a joint development of water flooding and polymer flooding. Not only the polymer concentration in the polymer flooding fluid has increased year by year, but also the water flooding fluid is commonly found in polymer (polymer). Experimental research shows that the wax composition of the production fluid changes after polymerization, and the melting point of the wax is 7-20 °C higher than that of water flooding. Conventional thermal cleaning, mechanical and other physical cleaning methods are difficult to guarantee the effect of wax removal and anti-wax, and the partial wear of the rod and tube Problems such as difficulty in wax removal and anti-wax are becoming more and more serious. It is manifested that the upward load and downward resistance of the pumping...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/524
Inventor 孙洪志魏金辉李淑红张居华王建平陈刚
Owner DAQING OILFIELD CO LTD
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