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High polymer fracturing liquid and preparation thereof

A technology of fracturing fluid and high polymer, which is applied in the direction of chemical instruments and methods, drilling compositions, etc. It can solve the problems of affecting fracturing effect and damaging oil layers, etc., and achieves low cost, low residue rate and simple preparation method Effect

Active Publication Date: 2007-06-27
克拉玛依新科澳石油天然气技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The fracturing fluid currently used in the oil field is obtained from natural plant gums, and its main disadvantage is that the prepared fracturing fluid residue is as high as 400 to 600 mg / liter, and this high residue fracturing fluid damages the oil layer and damages the oil layer. Affect the fracturing effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1, the polymer fracturing fluid is composed by weight percentage: 0.1% polyacrylamide, 0.05% chromium acetate, 0.3% formic acid, 0.1% chlorine dioxide, 0.9% sodium hydroxide, 0.2 % of ammonium persulfate and the balance of water.

Embodiment 2

[0012] Example 2, the polymer fracturing fluid is composed by weight percentage: 0.1% polyacrylamide, 0.05% zirconium acetate, 0.3% formic acid, 0.1% hydrogen peroxide, 0.9% sodium hydroxide, 0.2% peroxide ammonium sulfate and the balance water.

Embodiment 3

[0013] Example 3, the polymer fracturing fluid is composed by weight percentage: 0.1% polyacrylamide, 0.05% chromium acetate and zirconium acetate, 0.3% formic acid, 0.1% chlorine dioxide and hydrogen peroxide, 0.9% Sodium hydroxide, 0.2% ammonium persulfate and the balance water.

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PUM

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Abstract

A polymer fracturing liquid is composed of PAM 0.1-0.4%, chrome acetate 0.05-0.4%, acetic acid 0-1.0%, formate 0.3-3.0%, ClO20.1-3.0%, polyoxyethylene alxylphenol other 0-0.5%, KCl2 0-2.0%, NaOH0.9-10.0%, ammonium persulfate 0.2-10.0% and balanced with water. The process includes: first preparing the base liquid, then preparing the cross linkage liquid, and last preparing the fracturing liquid. The production cost little and the process is simple. It can be used for the hypotonic and the hyperosmotic oil phase. The residue ratio is little than 50mg / L-10mg / L.

Description

technical field [0001] The invention relates to a fracturing fluid for oil exploitation and a preparation method thereof, which is a polymer fracturing fluid and a preparation method thereof. Background technique [0002] The fracturing fluid currently used in the oil field is obtained from natural plant gums, and its main disadvantage is that the prepared fracturing fluid residue is as high as 400 to 600 mg / liter, and this high residue fracturing fluid damages the oil layer and damages the oil layer. affect the fracturing effect. Contents of the invention [0003] The invention provides a high polymer fracturing fluid which overcomes the deficiencies of the prior art and has the effects of low residue rate and reduced or even no damage to the oil layer. [0004] One of the technical solutions of the present invention is achieved in this way: a high polymer fracturing fluid, which consists of: 0.1% to 0.4% polyacrylamide, 0.05% to 0.4% chromium acetate or / and Zirconium a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68
Inventor 王国瑞李巧玲赵虹
Owner 克拉玛依新科澳石油天然气技术股份有限公司
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