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Quick water fracturing fluid and preparation method thereof

A fracturing fluid and water fracturing technology, applied in the field of slippery water fracturing fluid and its preparation, to achieve the effects of convenient use, labor cost saving, and environmental protection

Inactive Publication Date: 2019-04-12
大庆中联信实石油科技开发有限公司
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Problems solved by technology

[0003] At present, for low-permeability oil and gas reservoirs, the practice of effectively increasing production through hydraulic fracturing still faces great challenges

Method used

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  • Quick water fracturing fluid and preparation method thereof
  • Quick water fracturing fluid and preparation method thereof
  • Quick water fracturing fluid and preparation method thereof

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Embodiment Construction

[0016] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Slick water fracturing is an important fracturing fluid system in shale and oil-gas fracturing. Compared with traditional fracturing fluid systems, slick water fracturing has the characteristics of high efficiency and low cost, and a large amount of water is required for slick water fracturing. The liquid is driven into the ground, and the drag reducer (drag reducing thickener) for fracturing plays a vital role in the production of shale gas, although the drag reducer for fracturing is combined with other additives (such as anti-swelling agent, drainage aid Agents, surfactants, etc.) total less than 1% of the fracturing fluid, but reducing friction is the top priority in fracturing.

[0018] After technical researc...

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Abstract

The invention relates to fracturing fluid and a preparation method thereof, in particular to multifunctional green and clean quick water fracturing fluid. The quick water fracturing fluid comprises adissolution agent and an anti-drag thickening agent prepared from polyacrylamide emulsion; the quick water fracturing fluid is prepared from, by mass, 99.00-99.95% of the dissolution agent and 0.05-1.0% of the anti-drag thickening agent, wherein the anti-drag thickening agent is prepared from 10-40% of polyoxyethylene, 40-85% of organic solvents, 0-10% of a non-ionic surface active agent and 0-10%of a dispersing agent, wherein the fracturing fluid prepared from the polyacrylamide emulsion is low in damage and easily discharged reversely; quick water prepared from the polyacrylamide emulsion is low in cost, compared with traditional fracturing, the medicament cost is saved, the labor cost is saved by 50%, and the anti-drag thickening agent can enable a shale layer to generate a more complex and larger cracking layer; the quantity of additives in anti-drag water is small, recycling is facilitated, and environmental protection is achieved; the anti-drag thickening agent is rapid in dispersion, no emulsion breaking is needed, and use is quite convenient.

Description

technical field [0001] The invention relates to the technical field of oil field stimulation, in particular to a slick water fracturing fluid and a preparation method thereof. Background technique [0002] Oil and gas resources are stored in the pores, caves and fractures of underground rocks, and flow in these storage spaces. If the storage space and pores of the underground reservoir are large, oil and gas are easy to seep and produce after drilling. Fracturing technology is to squeeze a liquid with a certain viscosity into the oil layer during the oil production process. When the oil layer is pressed out many cracks, add proppant to fill the cracks, improve the permeability of the oil and gas layer, and increase oil production. craft. [0003] At present, for low-permeability oil and gas reservoirs, the method of effectively increasing production through hydraulic fracturing still faces great challenges. After the peak of the initial production period, the production d...

Claims

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Application Information

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IPC IPC(8): C09K8/68
CPCC09K8/68C09K8/882C09K8/885
Inventor 姜涛
Owner 大庆中联信实石油科技开发有限公司
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