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Biological regulator for fracturing, and preparation method and application thereof

A biological regulator and fracturing technology, which are applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of complex water quality, high salinity and high content of fluid preparation water and fracturing flowback fluid, and achieve Guarantee green production and sustainable development, improve temperature resistance, and reduce the effect of performance impact

Inactive Publication Date: 2018-01-12
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

[0002] With the promulgation and implementation of the new environmental protection law, recyclable fracturing fluid systems are mostly used for on-site construction fluids. The water quality of the liquid distribution water and fracturing flowback fluids on the construction site is complex, and the common feature is that the water is high in price (divalent, trivalent) High ion content and high salinity have a great impact on the performance of the reconstituted fracturing fluid, especially the temperature resistance and performance of the fracturing fluid, which poses a great risk to on-site construction. Therefore, it is necessary to add a And the regulator of high-valent ions in the fracturing flowback fluid to reduce the impact of high-valent ions on the performance of the reconstituted fracturing fluid

Method used

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  • Biological regulator for fracturing, and preparation method and application thereof
  • Biological regulator for fracturing, and preparation method and application thereof
  • Biological regulator for fracturing, and preparation method and application thereof

Examples

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Embodiment 1

[0018] The present embodiment provides a bioregulator for fracturing, which is composed of the following substances in weight percentage: 12% sodium citrate dihydrate, 5% iron ion stabilizer, 29% p-toluenesulfonic acid, 6% phosphate glyceride, Ethanol 6%, water 42%.

[0019] Preparation process: Add the formula amount of ethanol into the formula amount of water and stir evenly, then add the formula amount of phosphoglyceride, p-toluenesulfonic acid, iron ion stabilizer in turn and stir evenly, finally add sodium citrate dihydrate, stir evenly Leave it for 15-20min.

[0020] In this embodiment, the iron ion stabilizer is aminotriacetate.

[0021] The bioregulator for fracturing provided in this example is applied to the fracturing fluid prepared by fracturing flowback fluid. The viscosity and temperature resistance are as follows: figure 2 shown, with figure 1 Compared with the temperature resistance curve of the fracturing fluid prepared from the flowback fluid, it can be ...

Embodiment 2

[0024] The present embodiment provides a bioregulator for fracturing, which is composed of the following substances in weight percentage: 8% sodium citrate dihydrate, 3% iron ion stabilizer, 21% p-toluenesulfonic acid, 3% phosphoglyceride, Ethanol 2%, water 63%.

[0025] In this embodiment, the iron ion stabilizer is aminotriacetate. Refer to Example 1 for the preparation process of the bioregulator for fracturing.

Embodiment 3

[0027] The present embodiment provides a bioregulator for fracturing, which is composed of the following substances in weight percentage: 15% sodium citrate dihydrate, 6% iron ion stabilizer, 32% p-toluenesulfonic acid, 7% phosphate glyceride, Ethanol 12%, water 28%.

[0028] In this embodiment, the iron ion stabilizer is diethylenetriaminepentamethylphosphoric acid. Refer to Example 1 for the preparation process of the bioregulator for fracturing.

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Abstract

The invention provides a biological regulator for fracturing, and a preparation method and application thereof. The biological regulator comprises the following substances in percentage by weight: 8-15% of sodium citrate dihydrate, 3-6% of iron ion stabilizer, 21-32% of p-toluenesulfonic acid, 3-7% of phosphoglyceride, 2-12% of ethanol and the balance of water. The biological regulator can effectively shield high-valence (bivalent and trivalent) ions in fluid preparation water or a flow-back fluid, can reduce the influence on the performance of a prepared fracturing fluid, and can improve thetemperature tolerance of the fracturing fluid; the sodium citrate dihydrate in the regulator can regulate the pH value; and the regulator is biodegradable, nontoxic and harmless, and ensures the greenenvironment-friendly production and sustainable development of oilfields.

Description

technical field [0001] The invention belongs to the technical field of fracturing fluid for fracturing and increasing production in the oil field development process, and in particular relates to a biological regulator for fracturing, a preparation method and application. Background technique [0002] With the promulgation and implementation of the new environmental protection law, recyclable fracturing fluid systems are mostly used for on-site construction fluids. The water quality of the liquid distribution water and fracturing flowback fluids on the construction site is complex, and the common feature is that the water is high in price (divalent, trivalent) High ion content and high salinity have a great impact on the performance of the reconstituted fracturing fluid, especially the temperature resistance and performance of the fracturing fluid, which poses a great risk to on-site construction. Therefore, it is necessary to add a And the regulator of high-valent ions in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/86
Inventor 孙虎王祖文张冕兰建平高燕李泽锋王亚军李婧王改红邵秀丽宇文昔涵雷璠
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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