Integrated modeling method for horizontal well staged multi-cluster fracturing crack propagation and propping agent migration

A technology of fracture propagation and modeling method, which is applied in the field of modeling the integration of fracture propagation and proppant migration of staged multi-cluster fracturing in horizontal wells, and can solve problems such as insufficiency

Active Publication Date: 2021-03-30
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

However, at present, there is insufficient research on the fracture propagation of horizontal well staged multi-cluster fracturing and the distribution of proppant in the fracture in the process of non-uniform multi-fracture propagation. There are few reports on the research on the calculation method of migration integration

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  • Integrated modeling method for horizontal well staged multi-cluster fracturing crack propagation and propping agent migration
  • Integrated modeling method for horizontal well staged multi-cluster fracturing crack propagation and propping agent migration
  • Integrated modeling method for horizontal well staged multi-cluster fracturing crack propagation and propping agent migration

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Embodiment Construction

[0124] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0125] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0126] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The embodiment of the invention relates to an integrated modeling method for horizontal well staged multi-cluster fracturing crack propagation and propping agent migration. The method comprises the steps: S10, obtaining stratum parameters, construction parameters and well completion parameters; s20, setting initial seam pressure and seam width; s30, establishing a horizontal well segmented multi-cluster fracturing fracture propagation calculation model coupled with wellbore flow; s40, establishing a time step increasing model; s50, establishing a calculation model for migration of the proppingagent in the fracturing crack; s60, judging whether a propping agent is added at the moment or not, adopting a high-order weighted intrinsic non-oscillation finite difference method to calculate propping agent migration in the fracturing crack propagation process if so, and obtaining distribution of the propping agent in the crack; if not, entering the next step; and S70, judging whether the timestep reaches the construction time or not, if not, returning to the step S4, and otherwise, ending the calculation.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of oil and gas field development, and in particular to a modeling method for the integration of staged multi-cluster fracturing fracture propagation and proppant migration in a horizontal well. Background technique [0002] The development of unconventional oil and gas reservoirs depends on the development and application of staged multi-cluster fracturing in horizontal wells. The staged multi-cluster fracturing of horizontal wells realizes the expansion of multiple fractures in one section through the "clustered perforation" technology, thereby further improving construction efficiency and saving construction costs. After multi-cluster fracturing, sand-filled fractures with a certain conductivity will be formed in the formation, and the distribution of proppant in the fracture will directly affect the conductivity of the fracture and the productivity of oil and gas wells. Research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/13G06F113/08G06F119/14
CPCG06F30/28G06F30/13G06F2113/08G06F2119/14
Inventor 陈铭郭天魁罗志林刘晓强齐宁徐建春刘德新王森吴飞鹏王文东孙永鹏
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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