Biochemical composite blocking remover as well as preparation method and application thereof

A composite plugging remover and biochemical technology, applied in the field of biochemical composite plugging remover and its preparation, can solve problems such as insufficient plugging and difficulty in effectively reducing pressure and increasing injection

Active Publication Date: 2021-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is that the existing oil field plugging removal technology is insufficient to remove the plugging caused by organic blockages, especially residual oil, and it is difficult to effectively achieve The purpose of reducing pressure and increasing injection is to provide a new biochemical composite plugging agent

Method used

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  • Biochemical composite blocking remover as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The percentage by weight of each raw material that is used for biochemical composite plugging agent is:

[0033] A. Lipopeptide: 30%;

[0034] B. Sodium lauryl polyoxyethylene polyoxypropylene ether carboxylate: 10%;

[0035] C. Ethylene glycol: 10%;

[0036] D. The rest is water.

[0037] Preparation method: add sodium lauryl polyoxyethylene polyoxypropylene ether carboxylate, then add a certain amount of prepared water and stir to make it completely dissolved; add a certain amount of ethylene glycol into the completely dissolved surfactant solution, Stir to make it evenly mixed; add the remaining lipopeptide, stir evenly; add the remaining prepared water, stir to mix evenly.

[0038] Evaluation:

[0039]Interfacial tension: TX-500C spinning drop interfacial tensiometer was used to measure the oil-water interfacial tension of the effective mass concentration of the plugging agent at 0.005%, 0.05%, 0.5%, 2% and the crude oil sample of Shengli Oil Production Plant in...

Embodiment 2

[0043] The percentage by weight of each raw material that is used for biochemical composite plugging agent is:

[0044] A. Lipopeptide: 30%;

[0045] B. sodium tetradecyl polyoxyethylene polyoxypropylene ether carboxylate: 10%;

[0046] C. Propylene glycol: 10%;

[0047] D. The rest is water.

[0048] Preparation method is identical with embodiment 1

[0049] The effect evaluation method is the same as in Example 1: the oil-water interfacial tension between different concentrations of plugging agent solutions and crude oil is respectively: 8×10 -4 mN / m, 5×10 -4 mN / m, 3×10 -4 mN / m, 1×10 -4 mN / m; crude oil solubilization parameters were 22, 25, 30, 33; water injection pressure reduction ratios were 31%, 33%, 36%, 42%.

Embodiment 3

[0051] The percentage by weight of each raw material that is used for biochemical composite plugging agent is:

[0052] A. Lipopeptide: 30%;

[0053] B. Sodium cetyl polyoxyethylene polyoxypropylene ether carboxylate: 10%;

[0054] C. Glycerol: 10%;

[0055] D. The rest is water.

[0056] Preparation method is identical with embodiment 1

[0057] The effect evaluation method is the same as that in Example 1: the oil-water interfacial tension between different concentrations of plugging agent solutions and crude oil is respectively: 7×10 -4 mN / m, 4×10 -4 mN / m, 2×10 -4 mN / m, 1×10 -4 mN / m; crude oil solubilization parameters were 24, 26, 31, 34; water injection pressure reduction ratios were 34%, 34%, 35%, 38%.

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Abstract

The invention relates to a biochemical composite blocking remover as well as a preparation method and an application thereof, and mainly solves the problems that an existing blocking remover is poor in blocking removal effect on organic blockages, causes damage to stratums and oil wells, causes serious environmental pollution, corrodes equipment and pipelines and the like. The biochemical composite blocking remover comprises the following components in parts by mass: A, 10-50 parts of a biological surfactant; and B, 5 to 20 parts of a chemical surfactant; wherein the chemical surfactant is selected from an anionic non-ionic surfactant, and the technical scheme well solves the problems, and can be used in industrial production of oil field blockage removal, pressure reduction and injection increase.

Description

technical field [0001] The invention relates to an oilfield plug-removing agent, in particular to a biochemical composite plug-removing agent as well as its preparation method and application. Background technique [0002] Petroleum is an important non-renewable strategic resource, occupies an important position in my country's energy structure, and is also an irreplaceable basic raw material in the chemical industry, which is of great significance to national development and economic construction. With the increasing demand for energy in the world, how to continuously increase the crude oil production of existing oil fields, reduce the cost of crude oil recovery, and solve the practical problems faced in the current oil extraction process has become a major research topic of common concern in the domestic and foreign oil industries. [0003] In the process of oil exploration, development and continuous production, due to a series of other reasons such as drilling, well comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524C09K8/584
CPCC09K8/524C09K8/584C09K8/528C09K8/582
Inventor 孟勇李应成张卫东沙鸥鲍新宁金军吴欣悦
Owner CHINA PETROLEUM & CHEM CORP
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