A device for simulating two-dimensional filtration of fracturing fluid
A fracturing fluid and filtrate technology, which is applied in the field of petroleum engineering, can solve problems such as simulation effect deviations, achieve convenient hydraulic pressure and confining pressure, and reduce repetitive labor and human errors.
Inactive Publication Date: 2020-09-29
CHINA UNIV OF PETROLEUM (BEIJING) +2
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Problems solved by technology
[0003] The existing fracturing fluid fluid loss simulation devices are basically one-dimensional simulations, while the fracturing fluid fluid loss in the actual formation is two-dimensional or three-dimensional fluid loss, so the simulation effect has a certain deviation from the actual situation
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[0031] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.
[0032] Such as figure 1 As shown, the present invention provides a device for simulating two-dimensional fluid loss of fracturing fluid, which includes a liquid storage tank 1, a hydraulic pump 2, a core holder 3, a switch valve 4, a confining pressure pump 5, an oil storage tank 6, A weighing sensor 7 and a computer control system 8, wherein the hydraulic pump 2 and the confining pressure pump 5 are constant pressure pumps.
[0033] Among them, such as figure 2 with image 3 As shown, the core holder 3 includes a rubber sleeve fixing device (top) 10, a rubber sleeve fixing device (bottom) 11, a confining pressure cylinder 12, a rubber sleeve 13, a filtrate outflow device 14 and a filtrate inflow device 18. The filtrate outflow device 14 is provided with two filtrate outflow holes 15, and the fi...
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The invention discloses a device for simulating two-dimensional filtration of fracturing fluid. In the device, a liquid storage tank is communicated with a fracturing fluid inlet at the upper end of acore holder, and a hydraulic pump is arranged on a communicated pipeline; an oil storage tank is communicated with a confining pressure cavity of the core holder, and a confining pressure pump is arranged on the communicated pipeline; a weighing device is positioned at the lower part of the filtrate outflow device at the lower end of the core holder. According to the invention, the filtrate inflow and outflow channels are arranged in a drilling core, so that not only can static filtration of the fracturing fluid be realized, but also dynamic filtration can be simulated, and the dynamic filtration simulation process can truly reflect the shearing action of the axial flow of the fracturing fluid on the filter cake on the surface of the inner wall of the core. According to the invention, thehydraulic pump, the confining pressure pump and the weighing sensor are all connected with the computer control system, and the computer control system can conveniently control the hydraulic pressureand the confining pressure, and simultaneously, the data of the weighing sensor is automatically read, so that the repeated labor and the human error of manual reading can be reduced.
Description
technical field [0001] The invention relates to a device for simulating two-dimensional filtration of fracturing fluid, which belongs to the field of petroleum engineering. Background technique [0002] In the process of using hydraulic fracturing technology to stimulate oil and gas reservoirs, the permeability of the formation and the injected high-pressure fracturing fluid cause the fracturing fluid to leak into the formation. Fracturing fluid fluid loss rate is a key factor in fracturing design. It is affected by many factors such as fracturing fluid viscosity, pressure, and formation permeability. Accurate simulation of fluid loss rate under different conditions plays an important role in fracturing design. [0003] The existing fracturing fluid fluid loss simulation devices are basically one-dimensional simulations, but the fracturing fluid fluid loss in the actual formation is two-dimensional or three-dimensional fluid loss, so the simulation effect has a certain devia...
Claims
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IPC IPC(8): G01N13/04
CPCG01N13/04
Inventor 吴俊涛邓金根范白涛许杰张晓诚林海高斌张启龙谭强刘伟
Owner CHINA UNIV OF PETROLEUM (BEIJING)