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A method and construction technology for increasing the complexity of the fracture system in fracturing production

A fracture system and complex technology, applied in the direction of mining fluid, earthwork drilling, wellbore/well components, etc., can solve problems such as unsatisfactory production and fast decline in production, and achieve long-term effective conductivity and increase effect of complexity

Active Publication Date: 2021-11-02
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

Because the physical properties of high-pressure shale gas are not exactly the same as those of normal-pressure shale gas, in the prior art, normal-pressure shale gas fracturing technology has only achieved success in construction, but the output has not been ideal. The decline rate of output after pressing is also faster

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  • A method and construction technology for increasing the complexity of the fracture system in fracturing production
  • A method and construction technology for increasing the complexity of the fracture system in fracturing production
  • A method and construction technology for increasing the complexity of the fracture system in fracturing production

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Embodiment Construction

[0032] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so that implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems, and achieve the realization process of technical effects and according to the above-mentioned realization process The present invention is implemented concretely. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0033] With the depletion of conventional oil resources, the extraction of shale gas has gradually become the focus of today's oil and gas extraction. Shale gas resources include high pressure shale gas and normal pressure shale gas. The resources of normal-pressure shale...

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Abstract

The invention discloses a method for increasing the complexity of the fracturing and exploitation fracture system, a fracturing operation method and an underground heating device. Water to increase the complexity level of cracks. The method according to the invention can effectively increase the complexity of the fracture system in fracturing and fracturing, thereby improving the long-term effective conductivity of the fractures in normal pressure shale gas reservoirs, so as to increase the effective period of stimulation measures and improve economic development benefits.

Description

technical field [0001] The invention relates to the field of oil and gas exploitation, in particular to a method and a construction process for increasing the complexity of a fracture system in fracturing exploitation. Background technique [0002] Shale gas refers to unconventional natural gas that occurs in organic-rich shale-dominated reservoir rock series. It is continuously generated biochemical gas, thermogenic gas or a mixture of both, and can exist in natural fractures in a free state. It exists in kerogen and clay particle surfaces in an adsorbed state, and a very small amount is stored in kerogen and asphaltenes in a dissolved state. [0003] With the depletion of conventional oil resources, the extraction of shale gas has gradually become the focus of today's oil and gas extraction. Shale gas resources include high pressure shale gas and normal pressure shale gas. The resources of normal-pressure shale gas are extremely huge. Once a commercial breakthrough is ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B43/116E21B43/24E21B43/267
Inventor 蒋廷学李奎为王宝峰王海涛周林波吴春方李洪春
Owner CHINA PETROLEUM & CHEM CORP
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