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An evaluation device and method for 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: 2019-08-02
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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  • An evaluation device and method for sand-carrying performance of foam fracturing fluid
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  • An evaluation device and method for sand-carrying performance of foam fracturing fluid

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Embodiment 1

[0034] The embodiment of the present invention provides a device for evaluating the 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 experiment cylinder 21 , a rotating cylinder 22 , a stirrer 23 , an overturning support 24 , and a motor 25 . A visualization window 21 a is opened on the side wall of the experimental cylinder 21 . The stirrer 23 is provided on the other end of the experimental cylinder 21 and is located in the experimental cylinder 21 . The test cylinder 21 is rotatably arranged on the turning frame 24 . The rotating cylinder 22 and the agitator 23 are both provided with connecting pieces which can be coaxially connected with the motor 25 .

[0036] In the embodiment of the present invention, the rotating cylinder ...

Embodiment 2

[0038] The embodiment of the present invention provides an evaluation device for the sand-carrying performance of foam fracturing fluid, which is a specific implementation of the evaluation device provided in the first embodiment. 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 experiment cylinder 21 , a rotating cylinder 22 , a stirrer 23 , an overturning 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, 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 experi...

Embodiment 3

[0059] The embodiment of the present invention provides a method for evaluating the 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 : when 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 : add foam fracturing fluid and proppant into the experimental cylinder and pass the foaming gas to evacuate the gas in the experimental cylinder.

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

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

[0064] Step 105: Turn t...

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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 a device and method for evaluating the sand-carrying performance of foam fracturing fluid. Background technique [0002] Hydraulic fracturing is to use a high-pressure pump on the ground, using the principle of liquid pressure transmission, firstly inject a fracturing fluid with a certain viscosity into the oil layer at a pressure greater than the absorption capacity of the oil layer through the wellbore, and form a fracturing fluid on the bottom hole oil layer that exceeds the vicinity of the well wall. The pressure of in-situ stress and the tensile strength of the formation rock causes fractures in the formation near the bottom of the well; and then injects fracturing fluid with proppant into the oil layer to extend the fracture forward and prop the fracture, and finally leave a fracturing or fracture in the oil layer. Multiple fractures with different len...

Claims

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Application Information

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Patent Type & Authority Patents(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