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Experimental device for measuring friction of fluid body in fractured fractures and working method thereof

An experimental device and fluid technology, applied in the direction of direct current flow characteristics measurement, etc., can solve the problems of no effective method for friction measurement, great difference in friction resistance, and influence

Active Publication Date: 2012-09-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

List the calculation formulas of perforation friction and discuss the various influencing factors, give the calculation formulas of fracturing fluid density and perforation flow coefficient, and propose a new calculation formula of perforation diameter, but there is no research on fracture friction
[0005] At present, the known devices for measuring the frictional resistance of the fluid along the way are mainly used to measure the frictional resistance of the fluid in the manifold. There is no effective method to measure the friction in fractures. On-site friction calculations are often based on experience, which sometimes does not match the actual situation. The friction of fluids in fractures under different conditions has a great influence on the formulation and effect of stimulation measures. Predictions have a significant impact

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  • Experimental device for measuring friction of fluid body in fractured fractures and working method thereof
  • Experimental device for measuring friction of fluid body in fractured fractures and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] An experimental device for measuring the frictional resistance of a fluid in a fracturing fracture, which includes a pump 7, a heating device 8, a pipeline 9, a pipe string 15 and an artificially simulated fracture 13, and valves are respectively arranged at both ends of the pipe string 15 1 and valve 2, a valve 3 and a valve 4 are arranged at the left end of the artificially simulated crack 13, and a valve 5 is arranged at the right end of the artificially simulated crack 13; the pump 7 communicates with the heating device 8 through a pipeline 9, and the heating The liquid outlet of the temperature device 8 is connected to the valve 1 of the pipe string and the valve 3 of the artificial crack through the three-way pipe 10, and the valve 2 and the valve 5 are respectively connected to the two liquid inlets of the three-way pipe 11. A valve 6 is arranged at the liquid outlet of the three-way pipe 11;

[0047] A flow meter 14 and a pressure sensor 12 are respectively arra...

Embodiment 2

[0054] A working method for measuring the frictional resistance of fracturing fluid in fracturing fractures using the experimental device described in Example 1, according to steps (1)-(6):

[0055] (1) Select a plastic film with the same roughness as the inner wall of the actual fracturing fracture, and place the plastic film on the inner wall of the artificial simulated fracture respectively. Open holes in the position;

[0056] (2) Adjusting the distance between the two plates to make it the same size as the actual fracturing fracture;

[0057] (3) Close valve 1 and valve 2 of the pipe string, close valve 4 for artificially simulated cracks; respectively open valve 3 and valve 5 for artificially simulated cracks, and open valve 6;

[0058] (4) Prepare the experimental fluid, start the pump and the heating device respectively, and the pump pumps the experimental fluid into the artificial simulated crack along the pipeline and the heating device; the experimental fluid flows...

Embodiment 3

[0062] A working method for measuring the internal friction of fracturing fluid in a pipe string by using the experimental device described in Example 1, according to steps (7)-(11):

[0063] (7) Adjust the length of the pipe string to make it the same length as the pipe string used on site;

[0064] (8) Close valve 3, valve 4 and valve 5 of the artificially simulated crack, open valve 1 and valve 2 of the pipe string, and open valve 6;

[0065] (9) Prepare the test fluid, start the pump and the heating device respectively, and the pump pumps the test fluid into the pipe string along the pipeline and the heating device; the test fluid enters along the valve 1 of the pipe string, Outflow from valve 2 and valve 6 of the column;

[0066] (10) Read the data P of the pressure sensor 12 and the data P1' of the pressure sensor 12-1 respectively, and calculate the pressure difference △P1' of the experimental fluid in the pipe string, where △P1'=P-P1'

[0067] (11) Calculate the fric...

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Abstract

The invention relates to an experimental device for measuring friction of fluid body in fractured fractures and a working method thereof. The device comprises a pump, a heating device, a pipeline, a pipe column and an artificial simulating fracture; a valve (1) and a valve (2) are respectively arranged at two ends of the pipe column; a valve (3) and a valve (4) are arranged at the left end of the artificial simulating fracture; a valve (5) is arranged at the right end of the artificial simulating fracture; the pump is communicated with the heating device through the pipeline; the fluid outlet of the heating device is respectively connected with the valve (1) of the pipe column and the valve (3) of the artificial simulating fracture; the valve (2) and the valve (5) are respectively connected with two fluid inlets of a three-way pipe; and a valve (6) is arranged at the fluid outlet of the three-way pipe. According to the experimental device and the working method provided by the invention, the different viscosities and the different sand contents during fracturing and the fracturing fluid under different velocities and frictions of different formation fluids in different fracture widths, different fracture wall surface smoothness and different filtrate volumes in the fracture and the like are accurately simulated.

Description

technical field [0001] The invention relates to an experimental device and a working method for measuring the frictional resistance of a fluid in a fracturing fracture, belonging to the technical field of oil and gas field development. Background technique [0002] During hydraulic fracturing and after fracturing, the frictional resistance of fracturing fluid and formation fluid in fractures plays an important role in effectively formulating fracturing construction plans and predicting fracturing productivity. During the fracturing process, the fracturing fluid is pumped into the fracture. The viscosity, sand content, and flow rate of the fracturing fluid are different, and the friction in the fracture is different. After the fracturing is completed, the formation fluid flows into the wellbore through the fracture. Different formation fluids have different components and experience different friction in fractures; and the fluid loss of fractures and the different widths of f...

Claims

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Application Information

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IPC IPC(8): G01N11/08
Inventor 温庆志于姣姣罗明良翟恒立胡蓝霄李海鹏李扬徐希
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)