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Method for determining content of gel breaker applied in petroleum industry

A measurement method, a technology of the petroleum industry, applied in the field of testing, can solve the problems of non-degradable polymers, low pH value, and failure to achieve gel breaking effects, etc., and achieve the effects of reducing testing costs, rapid testing, and high testing accuracy

Inactive Publication Date: 2014-04-09
马蓉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional enzyme gel breakers are a mixture of hemicellulase, cellulase, amylase and pectinase, which cannot degrade specific polymers and cannot achieve the ideal gel breaking effect
[0006] In addition, although conventional enzyme breakers are a better fracturing fluid breaker at low temperatures, they require a lower pH

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] The present invention relates to a kind of determination method of the gel breaker content that is applied to petroleum industry, comprises the following steps:

[0022] (a) Prepare the breaker to be tested for subsequent use;

[0023] (b) carrying out gel breaking treatment with the prepared gel breaker;

[0024] (c) taking the fracturing fluid after gel breaking for subsequent use;

[0025] (d) centrifuging the fracturing fluid;

[0026] (e) removing and drying the solid;

[0027] (f) Analyze the ratio of the mass obtained by drying to the volume of the formulated fracturing fluid to obtain the content of the gel breaker.

[0028] In the step (d), the fracturing fluid is centrifuged by a high-speed centrifuge.

[0029] In the step (e), the solid is dried by a dryer.

[0030] In the step (e), the drying temperature is 120°C.

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PUM

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Abstract

The invention discloses a method for determining the content of a gel breaker applied in the petroleum industry. The method comprises the following steps: 1, preparing a gel breaker for measurement for later use; 2, carrying out gel breaking of the prepared gel breaker; 3, taking a gel-broken fracturing fluid for later use; 4, centrifuging the fracturing fluid; 5, taking out the above obtained solid, and drying; and 6, analyzing a ratio of the mass of the obtained dried solid to the volume of the above formula fracturing fluid to obtain the content of the gel breaker. The method has the advantages of rapid determination of the content of the gel breaker, high test precision, simple test steps, and substantial reduction of the test cost.

Description

technical field [0001] The invention relates to a test method, in particular to a method for determining the content of a gel breaker used in the petroleum industry. Background technique [0002] Commonly used oxidative breakers include potassium persulfate and ammonium persulfate. Since the activity of the oxidizing agent is related to the temperature, generally when the formation temperature is lower than 49°C, the reaction speed is very slow, and an activator needs to be added. [0003] Oxidative breakers have many defects such as: ①It reacts rapidly with fracturing fluid at high temperature, causing the fracturing fluid to degrade in advance and lose the ability to transport proppant, even leading to failure of fracturing construction; ②It is a non-specific reactant , can react with any reactants encountered such as pipes, formation matrix and hydrocarbons, etc., and generate pollutants that are incompatible with the formation, causing formation damage; ③The oxidative b...

Claims

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Application Information

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IPC IPC(8): G01N5/00
Inventor 马蓉
Owner 马蓉
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