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Device and method for evaluating sand-carrying performance of foam fracturing fluid

A foam fracturing fluid and evaluation device technology, which can be applied to measurement devices, instruments, scientific instruments, etc., can solve the problem of inability to accurately evaluate the sand-carrying performance of foam fracturing fluids.

Active Publication Date: 2017-10-31
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing technology cannot accurately evaluate the sand-carrying performance of foam fracturing fluid in the oil layer, the embodiment of the present invention provides a device and method for evaluating the sand-carrying performance of foam fracturing fluid

Method used

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  • Device and method for evaluating sand-carrying performance of foam fracturing fluid
  • Device and method for evaluating sand-carrying performance of foam fracturing fluid
  • Device and method for evaluating sand-carrying performance of foam fracturing fluid

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Experimental program
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Embodiment 1

[0034] The embodiment of the present invention provides an evaluation device for sand-carrying performance of foam fracturing fluid, see figure 1 , the evaluation device includes a gas supply unit 1, a processing unit 2 communicated with the gas supply unit 1, and a heating unit 3 arranged on the processing unit.

[0035] In this embodiment, the processing unit 2 includes an experimental cylinder 21 , a rotating cylinder 22 , a stirrer 23 , a turning support 24 , and a motor 25 . The side wall of the experimental cylinder 21 is provided with a visualization window 21a. The rotating cylinder 22 is arranged on one end of the experimental cylinder 21 and is located in the experimental cylinder 21. The axis of the rotating cylinder 22 is parallel to the axis of the experimental cylinder 21. The stirrer 23 is provided on the other end of the experiment cylinder 21 and located inside the experiment cylinder 21 . The experimental cylinder 21 is rotatably arranged on the flip support...

Embodiment 2

[0038] The embodiment of the present invention provides an evaluation device for the sand-carrying performance of foam fracturing fluid, which is the specific realization of the evaluation device provided in Embodiment 1, see Figure 2a and Figure 2b , the evaluation device includes a gas supply unit 1, a processing unit 2 communicated with the gas supply unit 1, and a heating unit 3 arranged on the processing unit.

[0039] In this embodiment, the processing unit 2 includes an experimental cylinder 21 , a rotating cylinder 22 , a stirrer 23 , a turning support 24 , and a motor 25 . The side wall of the experimental cylinder 21 is provided with a visualization window 21a, and the rotating cylinder 22 is arranged on one end of the experimental cylinder 21 and is located in the experimental cylinder 21, and the axis of the rotating cylinder 22 is parallel to the axis of the experimental cylinder 21 (see image 3 ). The stirrer 23 is provided on the other end of the experiment...

Embodiment 3

[0059] The embodiment of the present invention provides an evaluation method for sand-carrying performance of foam fracturing fluid, which is realized by using the evaluation device provided in embodiment 1 or embodiment 2, see Figure 4 , the evaluation method includes:

[0060] Step 101: Under the condition that the axis of the rotating cylinder is parallel to the axis of the experimental cylinder, adjust the distance between the axis of the rotating cylinder and the axis of the experimental cylinder.

[0061] Step 102: Adding foam fracturing fluid and proppant into the experimental cylinder and injecting foaming gas to empty the gas in the experimental cylinder.

[0062] Step 103: using the gas supply unit to inject the bubbling gas into the experimental cylinder, and using the heating unit to heat the experimental cylinder.

[0063] Step 104: Connect the motor to the agitator coaxially, and use the motor to drive the agitator to rotate to make the foam fracturing fluid fo...

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Abstract

The invention discloses a device and method for evaluating the sand-carrying performance of foam fracturing fluid, belonging to the technical field of oil-gas field development. The device comprises an air supply unit, a processing unit and a heating unit, wherein the processing unit is communicated with the air supply unit, the heating unit is arranged on the processing unit, and the processing unit comprises an experimental cylinder, a rotating cylinder, a stirrer, a turnover bracket and a motor; a visual window is formed in the side wall of the experimental cylinder, the rotating cylinder is arranged on one end of the experimental cylinder and is located in the experimental cylinder, and the axis of the rotating cylinder is parallel to that of the experimental cylinder; the stirrer is arranged on the other end of the experimental cylinder and is located in the experimental cylinder; the experimental cylinder is rotatably arranged on the turnover bracket; and connecting components coaxially connected with the motor are arranged on the rotating cylinder and the stirrer. According to the device and the method, the sand-carrying performance of the foam fracturing fluid in an oil reservoir can be accurately evaluated.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to an evaluation device and method for sand-carrying performance of foam fracturing fluid. Background technique [0002] Hydraulic fracturing is to use high-pressure pumps on the ground and use the principle of liquid pressure transmission to first inject fracturing fluid with a certain viscosity into the oil layer through the wellbore at a pressure greater than the absorption capacity of the oil layer, and form a fracturing fluid on the bottom of the well that exceeds the vicinity of the well wall. The pressure of the ground stress and the tensile strength of the formation rock causes fractures in the formation near the bottom of the well; then injects fracturing fluid with proppant into the oil layer to make the fractures extend forward and support the fractures, and finally leaves a or Multiple fractures of varying length, width and height create a new fluid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 佘朝毅桑宇彭欢潘琼周长林杨建
Owner PETROCHINA CO LTD