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A kind of sandstone reservoir phase permeability agent, phase permeability fracturing fluid and using method thereof

A sandstone reservoir and fracturing fluid technology, applied in the field of oil and gas field exploitation, can solve the problems of low sandstone oil phase permeability, water production, and unsatisfactory effect of water injection to increase oil production, etc., to achieve improved oil phase permeability, convenient use, and improved The effect of oil recovery

Active Publication Date: 2022-03-08
YANGTZE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose a sandstone oil reservoir phase permeability agent, phase permeability fracturing fluid and its application method, and solve the problem of low sandstone oil phase permeability, unsatisfactory water injection oil increase effect, fracturing pressure, etc. in the prior art. Serious technical problems of water production after cracking

Method used

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  • A kind of sandstone reservoir phase permeability agent, phase permeability fracturing fluid and using method thereof
  • A kind of sandstone reservoir phase permeability agent, phase permeability fracturing fluid and using method thereof
  • A kind of sandstone reservoir phase permeability agent, phase permeability fracturing fluid and using method thereof

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Embodiment 1

[0045] The present embodiment provides a kind of interpenetrating agent, is made of dodecyl trimethyl ammonium chloride, dodecyl quaternary ammonium salt cationic fluorocarbon surfactant, tetradecyl alkoxy carboxy betaine, mannose red Thiritol lipid and methanol are compounded according to the mass ratio of 10:16:12:15:100.

[0046] Specifically, it is obtained through the following steps: taking the raw materials according to the above proportioning ratio, mixing dodecyl trimethyl ammonium chloride, dodecyl quaternary ammonium salt cationic fluorocarbon surfactant, tetradecyl alkoxy carboxy betaine, Add mannose erythritol fat into methanol, and mix evenly to obtain a penetrating agent.

Embodiment 2

[0048] The present embodiment provides a kind of interpenetrating agent, is made of dodecyl trimethyl ammonium chloride, dodecyl quaternary ammonium salt cationic fluorocarbon surfactant, tetradecyl alkoxy carboxy betaine, mannose red Thiritol lipid and methanol are compounded according to the mass ratio of 15:25:20:25:100.

[0049] Specifically, it is obtained through the following steps: taking the raw materials according to the above proportioning ratio, mixing dodecyl trimethyl ammonium chloride, dodecyl quaternary ammonium salt cationic fluorocarbon surfactant, tetradecyl alkoxy carboxy betaine, Add mannose erythritol fat into methanol, and mix evenly to obtain a penetrating agent.

Embodiment 3

[0051] The present embodiment provides a kind of interpenetrating agent, is made of dodecyl trimethyl ammonium chloride, dodecyl quaternary ammonium salt cationic fluorocarbon surfactant, tetradecyl alkoxy carboxy betaine, mannose red Thiritol lipid and methanol are compounded according to the mass ratio of 12:20:15:20:100.

[0052] Specifically, it is obtained through the following steps: taking the raw materials according to the above proportioning ratio, mixing dodecyl trimethyl ammonium chloride, dodecyl quaternary ammonium salt cationic fluorocarbon surfactant, tetradecyl alkoxy carboxy betaine, Add mannose erythritol fat into methanol, and mix evenly to obtain a penetrating agent.

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Abstract

The invention discloses a sandstone oil reservoir phase permeability agent, a phase permeability fracturing fluid and a use method thereof. The sandstone oil reservoir phase permeability agent is composed of an alkyl trimethyl ammonium chloride, a quaternary ammonium salt cationic Alkoxy carboxy betaine, mannose erythritol lipid and organic alcohol are compounded at the mass ratio of (10-15): (16-25): (12-20): (15-25): 100 to make. Sandstone oil reservoir interpenetration agent provided by the invention is based on alkyl trimethyl ammonium chloride, quaternary ammonium salt cationic fluorocarbon surfactant, alkyl alkoxy carboxy betaine, mannose erythritol fat and organic alcohol Raw materials and various components have synergistic effects, which can transform the sandstone surface from oil-wet to water-wet, and improve oil phase permeability; at the same time, it can overcome the problem of more water and less oil in wells benefiting from water injection, and improve oil recovery It can also control water and increase oil after fracturing; at the same time, it is also easy to use.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploitation, in particular to a sandstone oil reservoir phase permeability agent, phase permeability fracturing fluid and a use method thereof. Background technique [0002] Generally speaking, the oil layer contains a certain amount of formation water. In the process of oil field development, it is easy to produce oil and water at the same time, so that the crude oil contains water, the oil phase permeability decreases, and the oil recovery rate is low. In addition, the recovery of formation water reduces formation energy, which is not conducive to oil and gas development. In the middle and later stages of oilfield development, the water produced gradually increases, the oil produced gradually decreases, and even some oil cannot be recovered. It is necessary to maintain formation energy by water injection and other means to enhance oil recovery. [0003] Fracturing is widely used as a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584C09K8/60C09K8/68C09K8/90C09K8/88E21B43/26
CPCC09K8/584C09K8/602C09K8/685C09K8/905C09K8/887E21B43/26
Inventor 熊俊杰赵林马超韩朝伟赵众从
Owner YANGTZE UNIVERSITY
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