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Cross-linked oil-in-water emulsified fracturing fluid

A fracturing fluid, oil-in-water technology, applied in the field of fracturing fluid, can solve problems such as poor effect and poor compatibility

Inactive Publication Date: 2011-06-15
武侯区巅峰机电科技研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This compatibility requirement is very important, often some low-permeability formations do not perform well after fracturing, partly because of poor compatibility

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be further described below.

[0033] The cross-linked oil-in-water emulsified fracturing fluid is characterized in that it includes 2% KCl, 0.45% super guar gum, 0.6% composite emulsifier, 0.15% drainage aid, 0.5% demulsifier, 1% clay stabilizer agent, 0.1% conditioner, 5% diesel oil, and the balance is water.

[0034] The preparation method of the present invention is as follows: measure the experimental water required by the formula and pour it into the agitator, weigh the thickener and additives according to the proportion, adjust the rotation speed of the agitator until the vortex formed by the liquid can see the central axis of the agitator blade Then add the weighed thickener and additives in order, and adjust the speed at all times to ensure the above-mentioned vortex state. Stir for 5 minutes after adding all the additives to form a uniform solution, pour it into a beaker and cover it, and let it stand in a constant temperature water ...

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Abstract

The invention discloses a cross-linked oil-in-water emulsified fracturing fluid, which belongs to a fracturing fluid technology and mainly solves the problem that the conventional fracturing fluid cannot meet the environmental requirements easily. The cross-linked oil-in-water emulsified fracturing fluid comprises the following components in percentage by mass: 2 percent of KCl, 0.45 percent of super guar gum, 0.6 percent of compound emulsifying agent, 0.15 percent of cleanup additive, 0.5 percent of emulsion splitter, 1 percent of clay stabilizer, 0.1 percent of modifier, 5 percent of diesel oil and the balance of water. The using effect of the fracturing fluid can be enhanced to a great extent, complete gel breaking is achieved by the fracturing fluid, and bonding capability is enhanced.

Description

technical field [0001] The invention relates to a fracturing fluid, in particular to a cross-linked oil-in-water emulsified fracturing fluid. Background technique [0002] Fracturing fluid (fracturing fluid) is the working fluid in the process of hydraulic fracturing and reconstruction of oil and gas reservoirs, which plays the role of transmitting pressure, forming and extending fractures, and carrying proppant. Fracturing fluid and its performance are important factors affecting the success or failure of fracturing, especially for large-scale fracturing. The fracturing fluid and its properties are closely related to whether a sand-filled fracture with sufficient size and sufficient conductivity can be created. Fracturing fluid accounts for 1 / 2 or more of the various costs of fracturing construction, and using fracturing fluid with appropriate performance is also an important way to improve the economic benefits of fracturing. [0003] Fracturing fluid is a general term. ...

Claims

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Application Information

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IPC IPC(8): C09K8/90
Inventor 黄友华
Owner 武侯区巅峰机电科技研发中心
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