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Multi-scale crack model of compact low-penetration reservoir and modeling method of model

A technology of low-permeability reservoirs and modeling methods, applied in the field of multi-scale fracture models and modeling in tight and low-permeability reservoirs, can solve the problem of oil and gas fields that do not reflect the relationship between fracture development laws of different scales and cannot objectively evaluate fractures of different scales Contribution and other issues to achieve the effect of improving accuracy

Inactive Publication Date: 2017-04-19
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

Therefore, the currently established 3D geological model of fractures is a general fracture model, which does not reflect the development law of fractures of different scales and their relationship, so it is impossible to objectively evaluate the role of fractures of different scales and their contribution to the development of oil and gas fields.

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  • Multi-scale crack model of compact low-penetration reservoir and modeling method of model
  • Multi-scale crack model of compact low-penetration reservoir and modeling method of model
  • Multi-scale crack model of compact low-penetration reservoir and modeling method of model

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Embodiment 1

[0050] In this embodiment, the establishment of a multi-scale fracture model of a fractured oil and gas reservoir is realized in a tight low-permeability reservoir area in my country. The process of establishing the method is as follows figure 1 shown.

[0051] Specifically:

[0052] (1) Obtain multi-scale fracture parameters in the target tight low-permeability reservoir; the multi-scale fracture parameters include: fracture group system, fracture orientation, fracture dip angle, fracture height, fracture length, fracture opening, and fracture density;

[0053] (2) Using layer data interpreted by 3D seismic data and layered data of a single well, a 3D grid model is established by using the difference modeling method;

[0054] Establishing a sedimentary facies model by using deterministic modeling or stochastic modeling methods according to each isochronous layer divided in the three-dimensional grid model;

[0055] According to the different facies types in the sedimentar...

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Abstract

The invention relates to a multi-scale crack model of a compact low-penetration reservoir and a modeling method of the model. The method comprises the following steps that (1) a multi-scale crack parameter is obtained; (2) a 3D basic geologic model is established; (3) in a space range determined by the 3D basic geologic model, single-scale crack 3D distribution models are established according to crack related data including the multi-scale crack parameter; and (4) a multi-scale 3D network model is established in an integrated manner by taking the single-scale crack 3D distribution models as object bodies. According to the modeling method, geologic, logging, 3D earthquake and other information are integrated, well point control and layered graded well constraint are carried out on the basis of a single-well crack evaluation result, a 3D network model and a 3D physical property model of the cracks in different scales in the compact low-penetration reservoir can be established, reliable information is provided for exploration and exploitation of crack type hydrocarbon reservoirs, and the risk cost of the exploration and exploitation of crack type hydrocarbon reservoirs is reduced.

Description

technical field [0001] The invention relates to the fields of oil and gas geology, exploration geophysics and computers, in particular to a multi-scale fracture model and a modeling method for tight and low-permeability reservoirs. Background technique [0002] Natural fractures are commonly developed in tight and low-permeability reservoirs. Natural fractures are not only the main factor affecting the quality and productivity of tight and low-permeability reservoirs, but also an important geological basis for the deployment of such oil and gas field development plans, and affect the development effect of tight and low-permeability oil and gas fields. Establishing a three-dimensional geological model of natural fractures in tight and low-permeability reservoirs is an important basis for the development of such oil and gas fields, and can provide geological basis for reservoir numerical simulation and program optimization. Natural fractures in reservoirs are multi-scale, incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/282G01V2210/6161G01V2210/6169G01V2210/646G01V2210/665
Inventor 曾联波史今雄
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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