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Peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent and preparation method thereof

A surfactant and fracturing flowback fluid technology, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as low efficiency and non-environmental protection of fracturing flowback fluid treatment methods, and achieve recovery Improve and solve the problem of waste liquid treatment and improve the effect of oil recovery

Inactive Publication Date: 2017-09-15
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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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 overcome the problems that the existing fracturing flowback fluid treatment methods are not environmentally friendly and have low efficiency

Method used

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  • Peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent and preparation method thereof
  • Peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent and preparation method thereof
  • Peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This example provides a flood control agent based on peptide-like surfactant fracturing flowback fluid, and each component is composed of the following weight percentages:

[0036] Peptide-like surfactant fracturing flowback fluid, 0.75%;

[0037] Co-surfactant, 0.003%;

[0038] Regulating and driving particles, 6.2%;

[0039] The balance is oilfield injection water.

[0040] Wherein, the co-surfactant is fatty alcohol polyoxyethylene ether sodium sulfosuccinate sodium salt, and the control and displacement particles are nanometer microspheres.

Embodiment 2

[0042] This example provides a flood control agent based on peptide-like surfactant fracturing flowback fluid, and each component is composed of the following weight percentages:

[0043] Peptide-like surfactant fracturing flowback fluid, 0.2%;

[0044] Co-surfactant, 0.001%;

[0045] Adjusting and driving particles, 4%;

[0046] The balance is oilfield injection water.

[0047] Wherein, the co-surfactant is sodium cocoamidoethyl sulfosuccinate sodium salt, and the regulating and flooding particles are nano polysilicon particles.

Embodiment 3

[0049] This example provides a flood control agent based on peptide-like surfactant fracturing flowback fluid, and each component is composed of the following weight percentages:

[0050] Peptide-like surfactant fracturing flowback fluid, 1%;

[0051] Co-surfactant, 0.05%;

[0052] Adjusting and driving particles, 15%;

[0053] The balance is oilfield injection water.

[0054] Among them, the co-surfactant is fatty alcohol polyoxyethylene ether sodium sulfosuccinate sodium salt and cocoic acid monoethanolamide sulfate in a mass ratio of 3:2, and the control and flooding particles are nano-polysilicon particles.

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Abstract

The invention provides a peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent and a preparation method thereof. The peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent is prepared from the following components in percentages by weight: 0.2-1% of a peptidomimetic surfactant backflow fracturing fluid, 0.001-0.05% of a cosurfactant, 4-15% of modifying and flooding particles and the balance of oilfield injection water. The peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent is clean and environment-friendly and can be applied to tertiary recovery, and the residual backflow fluid on a well site is avoided. The peptidomimetic surfactant backflow fracturing fluid-based modifying and flooding agent is suitable for an oil well reservoir, and green and environment-friendly production and sustainable development of a gas field are ensured by using the technology in downhole construction work; and the research result has obvious economic benefits and important social benefits, and has great popularization and application prospects.

Description

technical field [0001] The invention belongs to the technical field of oilfield fracturing flowback fluid control and flooding treatment, and in particular relates to a fracturing flowback fluid control and flooding agent based on a peptide-like surfactant and a preparation method. Background technique [0002] With the promulgation and implementation of the new environmental protection law, the on-site construction fluid mostly adopts the reusable fracturing fluid system. Among them, the clean fracturing fluid has the characteristics of low friction, low residue, low damage, low cost and reusability. It is one of the key liquids in the process of oil field reconstruction, but at the same time, a large amount of flowback liquid is produced. If the operation status of evaporation, combustion or centralized treatment by hauling is used, the on-site operation intensity and treatment cost will be increased, and it will cause huge damage to the surrounding environment. threaten. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/506C09K8/584
CPCC09K8/506C09K8/584
Inventor 高燕张冕兰建平李泽锋王亚军邵秀丽王改红高光辉雷璠
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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