Reservoir crack modeling method and system

A modeling method and fracture technology, applied in the field of oil and gas exploration and development, can solve the problems of large differences and low modeling accuracy

Active Publication Date: 2016-10-12
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Description
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Problems solved by technology

[0003] The inventors found that the prior art has low accuracy in modeling small-scale fractures in the distribution of fractures in fractured reservoirs such as clastic rocks and carbonate rocks, which is quite different from the actual situation

Method used

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  • Reservoir crack modeling method and system
  • Reservoir crack modeling method and system
  • Reservoir crack modeling method and system

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Embodiment 1

[0015] figure 1 A flowchart showing the steps of a reservoir fracture modeling method.

[0016] In this embodiment, the reservoir fracture modeling method according to the present invention includes: step 101, based on the formation fault model, formation structure model and core and / or logging data, divide multi-layer single sand bodies and establish each layer of single sand bodies The three-dimensional distribution model of the body; step 102, based on the fracture characteristics of the formation and the distribution characteristics of the fracture parameters, obtain the planar density distribution intensity of each group of fractures in each single sand body; step 103, based on the three-dimensional distribution model of each single sand body and The planar density distribution strength of each group of fractures in each single sand body is combined with the fracture control factors to establish a three-dimensional density model of each group of fractures in each single s...

Embodiment 2

[0069] According to an embodiment of the present invention, a reservoir fracture modeling system is provided, and the system may include: dividing multi-layer single sand bodies and A unit for establishing the three-dimensional distribution model of each single sand body; a unit for obtaining the plane density distribution strength of each group of fractures in each single sand body based on the formation fracture characteristics and fracture parameter distribution characteristics; The three-dimensional distribution model of each single sand body and the planar density distribution strength of each group of fractures in each single sand body are combined with the fracture control factors to establish the units of the three-dimensional density model of each group of fractures in each single sand body; , fracture control factors and the three-dimensional density model of each group of fractures in each single sand body, obtain the three-dimensional discrete model of each group of...

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Abstract

Disclosed is a reservoir crack modeling method and system. The method comprises steps of: on the basis of a stratum fault model, a stratum tectonic model, and core and/or logging information, dividing multiple layers of single sand body and establishing a 3D distribution model for each layer of single sand body; on the basis of a stratum fracture characteristic and a crack parameter distribution characteristic, acquiring each group of crack planar density distribution intensity of each layer of single sand body; on the basis of the 3D distribution model of each layer of single sand body and the each group of crack planar density distribution intensity of each layer of single sand body and in combination with a crack control factor, establishing each group of crack 3D density model of each layer of single sand body; and on the basis of the crack parameter distribution characteristic, the crack control factor, and the each group of crack 3D density model of each layer of single sand body, acquiring each group of crack 3D discrete model of each layer of single sand body so as to acquire all groups of crack 3D network models of all single sand bodies.

Description

technical field [0001] The invention relates to the field of oil and gas exploration and development, and more specifically, to a reservoir fracture modeling method and system. Background technique [0002] In the field of oil and gas exploration and development, fractured reservoirs are an important type of oil and gas reservoirs in my country's oil and gas basins. Reasonable and efficient development of such reservoirs is of great significance to the sustainable development of my country's petroleum industry and the security of energy strategies. Due to the common development of complex fracture systems in oil reservoirs, fractures not only affect the storage and migration of oil and gas, but also have an important impact on production and development at different stages. Scientifically evaluate the characteristics of fracture development, and clarify its formation mechanism, controlling factors and Establishing an accurate 3D geological model of fractures can provide geol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V99/00
CPCG01V99/005
Inventor 赵向原曾联波周旭煌
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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