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Terrestrial facies shale gas fracture network fracture parameter optimizing method

A shale gas and parameter technology, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., can solve the problems related to optimization of field parameters, etc., so as to increase the sweeping range, increase the complexity, and increase the permeability rate effect

Inactive Publication Date: 2016-09-21
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0007] Moreover, the above two public documents are limited to the optimization of experimental methods, and do not involve the optimization of field parameters

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  • Terrestrial facies shale gas fracture network fracture parameter optimizing method
  • Terrestrial facies shale gas fracture network fracture parameter optimizing method
  • Terrestrial facies shale gas fracture network fracture parameter optimizing method

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0050] refer to figure 1 As shown, the continental shale gas fracture network fracturing parameter optimization method of the present invention includes three major steps:

[0051] Step S1, design the indoor shale gas hydraulic fracturing physical simulation test through the hydraulic fracturing physical simulation test system based on the large-scale sample, and optimize the parameters of the indoor shale gas hydraulic fracturing physical simulation test (simulating hydraulic fracturing under laboratory conditions Sand-containing fracturing, providing conditions for the optimization of sand ratio and fracturing fluid, and providing test basis for on-site fracturing construction), the optimization test parameters mainly include: simulated wellbore layout, simulated wellbore length, perforation type, perforation and pre-treatment The intersection angle ...

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Abstract

The invention discloses a terrestrial facies shale gas fracture network fracture parameter optimizing method comprising the following steps: S1, based on a large size sample, using a hydraulic fracturing physics simulation test system to design an indoor shale gas hydraulic fracturing physics simulation test, and optimizing indoor shale gas hydraulic fracturing physics simulation test parameters; S2, according to the indoor shale gas hydraulic fracturing physics simulation test optimized test parameters, combining with target block field fracturing construction conditions, optimizing terrestrial facies shale gas hydraulic fracturing construction parameters, and making a terrestrial facies shale gas fracturing scheme; S3, analyzing the difference between field fracturing construction conditions and laboratory conditions, and applying the parameter optimized result in the field fracturing construction, thus obtaining a complex fracture network. The method combines parameter optimizing test under laboratory conditions with field construction parameter optimization, thus adding crack complex level in the terrestrial facies shale gas fracturing process, artificially increasing permeability, and obtaining a more complex fracture network closer to reality.

Description

technical field [0001] The invention relates to the technical field of unconventional oil and gas reservoir development, in particular to a method for optimizing fracturing parameters of a continental shale gas fracture network. Background technique [0002] Hydraulic fracturing technology is one of the core technologies for shale gas development. Different from the development methods of conventional oil and gas, the development of unconventional oil and gas reservoirs such as shale gas often requires large-scale hydraulic fracturing to transform the reservoir, pursue a complex fracture network structure, and form fractures where natural fractures and artificial fractures intersect network, so as to break up the effective reservoirs that can seepage, increase the seepage area and conductivity, and increase the initial production and ultimate recovery. [0003] my country's shale gas source rocks are mainly divided into three types: marine facies, continental facies, and ma...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/267
CPCE21B43/26E21B43/267
Inventor 王荣璟蒋国盛解经宇高辉张涛
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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