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Biological enzyme oilfield blocking remover

A plug-removing agent and bio-enzyme technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., to achieve the effects of stimulating oil production capacity, convenient use, and simple preparation process

Inactive Publication Date: 2012-06-20
XIAN REJE BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a novel bio-enzyme oil field plugging agent to solve the defects of the traditional method, so as to achieve the purpose of improving oil recovery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The experiment was arranged in the No. 1 Oil Production Plant of Changqing Oilfield. The experimental oil well is a super-bottom permeable reservoir. Various stimulation methods have been used for a long time, but the production has not been significantly increased. The production has been greatly increased after the application of biological enzyme plugging remover. The output before the experiment was 0.9 tons / day, and after 5 days of using the plugging remover of the present invention, the output increased to 3.3 tons / day.

Embodiment 2

[0020] This experiment is arranged in the second oil production plant of Changqing Oilfield. The experimental oil well is a super-bottom permeable reservoir. Various production stimulation methods have been used for a long time, but the production has not been significantly increased. The production has been greatly increased after the application of biological enzyme plugging remover. The output before the experiment was 1.2 tons / day, and after 5 days of using the plugging remover of the present invention, the output increased to 4.1 tons / day.

Embodiment 3

[0022] This experiment is arranged in the third oil production plant of Changqing Oilfield. The experimental oil well is a deep-bottom permeable reservoir. Various stimulation methods have been used for a long time, but the production has not increased significantly. After the application of biological enzyme plugging agent, the production has increased significantly. The output before the experiment was 0.8 tons / day, and after 5 days of using the plug-removing agent of the present invention, the output increased to 2.9 tons / day.

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PUM

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Abstract

The invention discloses biological enzyme oilfield blocking remover which is characterized by comprising the following components: cellulase 5%, lipase 5%, alkali protease 5%, NH4C1 0.5%, KCl 4%, NaCl 4%, ZnCl2 0.5%, polydihydroxy propyl dimethyl ammonium chloride 1%, sodium polyepoxy succinate 0.5%, and water in balancing amount. The biological enzyme oilfield blocking remover has the advantages that the preparation is simple and convenient; no corrosion is caused to oilfield pipelines and underground equipment; pre-waxing, anti-corrosion and anti-scaling properties are achieved; and biological degradation can be realized. Therefore, the oilfield recovery efficiency is effectively improved.

Description

technical field [0001] The invention belongs to a chemical reagent used for oil layer plugging removal in the field of oilfield exploitation, and in particular relates to a biological enzyme oilfield plugging removal agent. Background technique [0002] At present, the plugging removal technology widely used in oil fields is acidizing plugging removal technology. This technology has many disadvantages, such as inconvenient construction, corrosion to equipment and pipelines, and secondary pollution to oil reservoirs. High-concentration acid will destroy the cement of sandstone, resulting in quiet and serious sand production, bringing new blockage to the bottom layer and reducing the permeability of the oil layer; it will cause corrosion of the oil pipeline due to the difficulty of separation during reverse flow; the residual acid in the crude oil will affect the electricity dehydration stations; its acidity can also wreak havoc on ground vegetation. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): C09K8/52C09K8/58
Inventor 陈富林
Owner XIAN REJE BIOLOGICAL TECH