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Shale gas reservoir complex fracture conductivity simulation experiment method

A technology with conductivity and complex fractures, used in the production of fluids, earth-moving drilling, wellbore/well components, etc.

Inactive Publication Date: 2015-01-21
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Abstract
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  • Claims
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Problems solved by technology

However, shale gas reservoirs are fractured to form network fractures, and the conductivity measured by the traditional method is very different from the actual one. Therefore, it is necessary to design the experimental method according to the characteristics of the network fractures, and test the conductivity under different fracture shapes.

Method used

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  • Shale gas reservoir complex fracture conductivity simulation experiment method
  • Shale gas reservoir complex fracture conductivity simulation experiment method
  • Shale gas reservoir complex fracture conductivity simulation experiment method

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0024] In order to conduct experimental evaluation of the conductivity of complex fractures in shale gas reservoir fracturing, and more realistically simulate the real situation of stratum network fractures in the experiment, the present invention provides a simple-to-operate "shale gas reservoir complex fracture conductivity Ability simulation experiment method", such as figure 1 As shown, the method includes the following steps:

[0025] Step S101 selects the stratum shale core or the shale outcrop of the same horizon for making the test piece, and processes the sh...

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Abstract

The invention provides a shale gas reservoir complex fracture conductivity simulation experiment method. The method comprises the following steps that (a) a stratum shale core or a peer position shale outcrop for manufacturing a test piece is selected, and shale materials are processed into a shale slab, wherein the length of the shale slab is 17.7 cm, the thickness of the shale slab is 1.5 cm, the width of the shale slab is 3.8 cm, and the two ends of the shale slab are in a semicircular shape; (b) the shale slab is further processed to meet the requirement of turning fractures or branch fractures; (c) the processed shale slab is put in a conducting room for testing the fracture conductivity, and a propping agent with the certain sanding concentration is laid in the middle of the shale slab; (d) the conducting room with the propping agent and the shale slab well arranged is put in a fracture conductivity testing device to conduct a conductivity experiment test. For fractured fragile shale with complex fractures, the shale gas reservoir complex fracture conductivity simulation experiment method can be used for studying the conductivity of the turning fractures and the branch fractures formed through fracturing of shale gas reservoirs and evaluating the influence on the fracture conductivity by the fracture steering degree and the branch fracture form.

Description

technical field [0001] The invention relates to hydraulic fracturing technology of shale gas reservoirs, in particular to a simulation experiment method for the conductivity of complex fractures formed by fracturing of shale gas reservoirs. The invention provides technical support for studying the optimization of hydraulic fracturing fracture conductivity in shale gas reservoirs. Background technique [0002] Shale gas reservoirs have physical characteristics of low porosity and low permeability. If fracturing is not implemented to form a large-scale fracture network zone and provide sufficient flow channels for shale gas, ideal production and recovery will not be obtained. Rate. The current shale gas exploitation technologies mainly include horizontal well multi-stage fracturing technology, slick water large-scale fracturing technology and simultaneous fracturing technology. The effective implementation of these advanced technologies has greatly increased the production of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/267E21B49/00
CPCE21B43/267E21B49/00
Inventor 王雷苏瑗卫然张士诚王琦徐康泰
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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