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Construction method using self-suspending clear water fracturing proppant

A technology of water fracturing and construction method, applied in chemical instruments and methods, mining fluids, earthwork drilling, etc., can solve the problems of inconvenient construction, long cycle, high cost, etc.

Active Publication Date: 2021-07-30
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method using self-suspension clear water fracturing proppant to solve the problems of inconvenient construction, long period and high cost of existing construction methods

Method used

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  • Construction method using self-suspending clear water fracturing proppant
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  • Construction method using self-suspending clear water fracturing proppant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The construction method using self-suspending clean water fracturing proppant includes the following steps:

[0050] (1) Use a high-pressure pump truck to pump natural water into the underground reservoir for fracturing at a displacement of 2 cubic meters per minute to form initial fractures;

[0051] (2) Continuously add clean water into the sand mixer as the sand-carrying fluid, and at the same time, add self-suspension clean water fracturing proppant at a displacement of 2.2 cubic meters per minute and stir to make sand-carrying fracturing fluid. The sand mixing time is 10 seconds; self-suspension The sand-water volume ratio of clear water fracturing proppant to sand-carrying fluid is 40%, and the relationship between sand mixing speed Y and sand-water volume ratio X is controlled at Y=118.35X 0.1918 ;

[0052] (3) After the initial fractures are formed, a high-pressure pump truck is used to continuously pump sand-carrying fracturing fluid into the initial fractures...

Embodiment 2

[0062] The construction method using self-suspending clean water fracturing proppant includes the following steps:

[0063] (1) Use a high-pressure pump truck to pump natural water into the underground reservoir for fracturing at a displacement of 2.5 cubic meters per minute to form initial fractures;

[0064] (2) Continuously add clean water into the sand mixer as the sand-carrying fluid, and at the same time add self-suspension clean water fracturing proppant at a displacement of 2.6 cubic meters per minute and stir to make sand-carrying fracturing fluid. The sand mixing time is 12 seconds; self-suspension The sand-water volume ratio of clear water fracturing proppant to sand-carrying fluid is 45%, and the relationship between sand mixing speed Y and sand-water volume ratio X is controlled at Y=118.35X 0.1918 ;

[0065] (3) After the initial fractures are formed, a high-pressure pump truck is used to continuously pump sand-carrying fracturing fluid into the initial fracture...

Embodiment 3

[0075] The construction method using self-suspending clean water fracturing proppant includes the following steps:

[0076] (1) Use a high-pressure pump truck to pump natural water into the underground reservoir for fracturing at a displacement of 1.5 cubic meters per minute to form initial fractures;

[0077] (2) Continuously add river water into the sand mixer as the sand-carrying fluid, and at the same time add self-suspension clear water fracturing proppant at a displacement of 3 cubic meters per minute and stir to make sand-carrying fracturing fluid. The sand mixing time is 15 seconds; self-suspension The sand-water volume ratio of clear water fracturing proppant to sand-carrying fluid is 50%, and the relationship between sand mixing speed Y and sand-water volume ratio X is controlled at Y=118.35X 0.1918 ;

[0078] (3) After the initial fractures are formed, a high-pressure pump truck is used to continuously pump sand-carrying fracturing fluid into the initial fractures ...

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Abstract

The invention belongs to the technical field of fluid mine mining, and specifically discloses a construction method using a self-suspending clear water fracturing proppant, comprising the following steps: (1) pumping the preflush into an underground reservoir for fracturing to form initial cracks; 2) Continuously add sand-carrying fluid into the sand mixer, and at the same time, add self-suspending clean water fracturing proppant and stir to make sand-carrying fracturing fluid. Sand mixing time is 7-15s; self-suspending clean water fracturing proppant and sand-carrying fluid The sand-water volume ratio is 5-55%, and the relationship between the sand-mixing speed Y and the sand-water volume ratio X is controlled at Y=118.35X 0.1918 (3) After the initial fractures are formed, the sand-carrying fracturing fluid is continuously pumped into the initial fractures to extend the initial fractures and form geological fractures supported by self-suspension clear water fracturing proppant. Using the technical scheme of the application of the invention can effectively solve the problems of inconvenient construction, long period and high cost caused by the existing construction method.

Description

technical field [0001] The invention belongs to the technical field of fluid mine mining, and in particular relates to a construction method using self-suspension clear water fracturing proppant. Background technique [0002] When exploiting mineral deposits formed in underground rock formations, in order to obtain high yields, fluid conductivity is often used for fracturing operations. The process of fracturing is to use high-pressure and large-displacement pumps on the ground, and use the principle of liquid pressure transmission to send a liquid with a certain viscosity (usually called fracturing fluid) to the reservoir with a pressure greater than the absorption capacity of the reservoir. Injection, and gradually increase the pressure in the wellbore, so as to suppress the high pressure at the bottom of the well. When the pressure is greater than the in-situ stress near the well wall and the tensile strength of the formation rock, cracks will be generated in the formatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B43/267C09K8/80
CPCC09K8/805E21B43/26E21B43/267
Inventor 熊帆熊鹰王正力陈秋庆
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP