Large-size and multi-crack simulation device and method for propping agent transportation

A simulation device and multi-fracture technology, applied in the field of oil and gas field development and research, can solve problems such as inconvenience, single fracture shape, uncontrollable fracture distribution shape, etc., and achieve the effect of improving experimental performance and good simulation effect.

Active Publication Date: 2015-04-29
SOUTHWEST PETROLEUM UNIV +1
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Problems solved by technology

[0004] For this reason, a patent discloses a multi-fracture simulation experiment device. Although the gap between the simulation experiment and the actual formation situation has been narrowed, it still has defects: the device cannot be controlled during the experiment, which is specifically reflected in the uncontroll

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  • Large-size and multi-crack simulation device and method for propping agent transportation
  • Large-size and multi-crack simulation device and method for propping agent transportation
  • Large-size and multi-crack simulation device and method for propping agent transportation

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[0056] Of the invention Figure 1 to Figure 7 The illustrated structure is only used to help those skilled in the art understand, and is not used to limit the actual device of the present invention. The elements in the figures are drawn by simple drawing methods, which are only for illustration, but this does not affect the description of the present invention, and those skilled in the art should understand.

[0057] The following explains the terms involved in the present invention:

[0058] Proppant is a key material in fracturing stimulation methods in the exploitation of oil and natural gas low-permeability oil and gas wells. It is generally natural sand or artificial high-strength ceramic particles with a certain size and gradation. It plays a role in preventing the support cracks from closing due to stress release, thereby keeping the oil and gas flowing.

[0059] Fracturing fluid is the liquid used in fracturing measures of fluid minerals (gas, oil, fresh water, salt water, ...

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Abstract

The invention relates to a large-size and multi-crack simulation device and method for propping agent transportation. The device comprises a crack unit (20), wherein the crack unit (20) comprises a main crack (201) and multi-stage branch cracks (202) arranged on at least one side of the main crack. The device is characterized in that the main crack (201) and the branch cracks (202) are connected through connection parts (203), and the connection parts (203) are provided with control valves (204) which are used for controlling the communicating state between the main crack (201) and the branch cracks. According to the experimental scheme, the control valves (204) are opened or closed, the connection angle between the main crack (201) and the branch cracks (202) is set through angle regulators (205), and the settlement laws of a propping agent in different crack shapes are researched.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development research, in particular to a large-scale multi-fracture simulation device and method for proppant migration. Background technique [0002] As the mining scale of shale gas reservoirs continues to expand, hydraulic fracturing plays a very important role as one of the necessary means to obtain and increase production in shale gas reservoirs. Because the transportation law of proppant in fracture is the key to affect the shape of proppant laying in fracture, it directly determines the final effect of fracturing stimulation. Therefore, it is extremely necessary to study the law of proppant settlement and migration in fractures. The method that is most used and can most objectively reflect the real situation of proppant transport in fractures is the physical simulation experiment of narrow-slit flow, especially the large-scale narrow-slit experimental equipment. [0003] At pres...

Claims

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Application Information

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IPC IPC(8): E21B49/00G01M10/00
CPCE21B49/00G01M10/00
Inventor 杨兆中叶建平赵金洲李小刚张健徐永驰
Owner SOUTHWEST PETROLEUM UNIV
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