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Xanthan gum fracturing fluid, and preparation method and application thereof

A technology of xanthan gum and fracturing fluid, applied in the field of fracturing fluid, can solve the problems of limiting the application of water-based guar gum fracturing fluid, high cost of water-based guar gum fracturing fluid, low sand-carrying ability, etc.

Inactive Publication Date: 2012-11-28
北京世纪中星能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since plant guar gum is not produced in China, manufacturers of modified guar gum rely on imported raw materials; resulting in high cost of water-based guar gum fracturing fluid
Moreover, the existing water-based guar gum fracturing fluid also has the problem of low sand-carrying capacity, which limits the application of water-based guar gum fracturing fluid

Method used

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  • Xanthan gum fracturing fluid, and preparation method and application thereof
  • Xanthan gum fracturing fluid, and preparation method and application thereof
  • Xanthan gum fracturing fluid, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] formula:

[0027]

[0028]

[0029] Among them, the bactericide is paraformaldehyde; the clay stabilizer is potassium chloride; the gel breaker is ammonium persulfate; the pH regulator is sodium carbonate; the crosslinking agent is chromium trichloride; Iron.

[0030] Preparation:

[0031] (1) Add xanthan gum, bactericide, clay stabilizer and gel breaker of formula quantity in 20 kilowatts dry powder mixing equipment, obtain uniform powder after mixing for 8 hours;

[0032] (2) The pH regulator solution is prepared as a pH regulator solution with a mass fraction of 5%, stirred at 900 rpm for 4 hours, and the pH regulator solution is added to step (1) with 13 milliliters / second speed flow In the obtained powder, the first solution is obtained;

[0033] (3) preparing the crosslinking agent into a crosslinking agent solution with a mass fraction of 20%, and adding the crosslinking agent solution into the first solution under stirring to obtain a second solution; ...

Embodiment 2

[0038] formula:

[0039]

[0040]

[0041] Among them, the bactericide is paraformaldehyde; the clay stabilizer is potassium chloride; the gel breaker is potassium persulfate; the pH regulator is sodium bicarbonate; the crosslinking agent is chromium trichloride; ferric chloride.

[0042] Preparation:

[0043] (1) Add xanthan gum, bactericide, clay stabilizer and gel breaker of formula quantity in 25 kilowatts dry powder mixing equipment, obtain uniform powder after mixing 2 hours;

[0044] (2) The pH regulator solution is prepared as a pH regulator solution with a mass fraction of 7%, stirred at 1000 rpm for 5 hours, and the pH regulator solution is added to step (1) with a flow rate of 15 milliliters per second. In the obtained powder, the first solution is obtained;

[0045] (3) The cross-linking agent is prepared as a cross-linking agent solution with a mass fraction of 15%, and the cross-linking agent solution is added to the first solution under stirring to obta...

Embodiment 3

[0050] formula:

[0051]

[0052] Among them, the bactericide is glutaraldehyde; the clay stabilizer is potassium chloride; the gel breaker is ammonium persulfate; the pH regulator is sodium hydroxide; the crosslinking agent is chromium trichloride; ferric chloride.

[0053] Preparation:

[0054] (1) Add xanthan gum, bactericide, clay stabilizer and gel breaker of formula quantity in 15 kilowatts dry powder mixing equipment, obtain uniform powder after mixing 2 hours;

[0055](2) The pH regulator is prepared as a pH regulator solution with a mass fraction of 4%, stirred at 800 rpm for 3 hours, and the pH regulator solution is added to step (1) with a 10 ml / second speed flow In the obtained powder, the first solution is obtained;

[0056] (3) The cross-linking agent is prepared as a cross-linking agent solution with a mass fraction of 15%, and the cross-linking agent solution is added to the first solution under stirring to obtain a second solution;

[0057] (4) The low-...

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Abstract

The invention provides xanthan gum fracturing fluid, and a preparation method and application thereof. The xanthan gum fracturing fluid comprises xanthan gum and auxiliary additives. The xanthan gum fracturing fluid has the advantages of high viscosity and high sand-carrying capacity, and can serve as large-dose 'quick water' and 'prepad fluid' in the fracturing process or serve as sand-carrying fluid in the fracturing process.

Description

technical field [0001] The invention relates to a fracturing fluid, in particular to a xanthan gum fracturing fluid, its preparation method and application. Background technique [0002] Fracturing fluid plays an important role in oil and gas field development and reservoir transformation. Its main working principle is: using high-pressure and large-displacement pumps, using the principle of liquid pressure transmission, injecting fracturing fluid into oil layers at high pressure, and gradually increasing the pressure in the wellbore. When the pressure is higher than the in-situ stress near the well wall and the tensile strength of the formation rock, fractures will be generated in the formation near the bottom of the well: continue to inject fracturing fluid, and the fractures will extend forward and The proppant is filled to form a sand-filled fracture with a certain geometric size and high conductivity in the formation near the bottom of the well, so as to achieve the pur...

Claims

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Application Information

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IPC IPC(8): C09K8/68
Inventor 徐波翔周国君
Owner 北京世纪中星能源技术有限公司
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