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Crack development pattern and reservoir matrix-crack permeability sensitivity prediction method

A technology for fracture permeability and fracture development, which is applied in the field of oil and gas exploration and development to achieve the effects of low prediction cost, strong operability and high practical value

Inactive Publication Date: 2018-05-08
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] The present invention aims to solve the above problems, and provides a fracture development model and reservoir matrix-fracture permeability sensitivity prediction method, which solves how to predict the fracture development model based on fracture porosity and permeability parameters, and evaluate reservoir matrix-fracture permeability sensitivity. The problem of optimal reservoir exploration and development blocks

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  • Crack development pattern and reservoir matrix-crack permeability sensitivity prediction method
  • Crack development pattern and reservoir matrix-crack permeability sensitivity prediction method
  • Crack development pattern and reservoir matrix-crack permeability sensitivity prediction method

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specific Embodiment approach

[0048] Take the second section of Funing Formation (abbreviation of the second section of Fu) in Jinhu Sag, Subei Basin as an example to illustrate the concrete technical scheme of the present invention:

[0049] Since the deposition of the Fu 2 Member, the Jinhu Sag has mainly experienced two stages of tectonic movements, Wubao and Sanduo. The main fracturing period of the Fu 2 Member in the study area was the Wubao period. During this period, the faults were strongly active, mainly showing near-north-south extension, forming a complex fault system inside the sag. Combined with regional geological data, the steps to predict the fracture development model and reservoir matrix-fracture permeability sensitivity of the Fu 2 Member in Jinhu Sag are as follows:

[0050] (1) Establish a dual-porosity and dual-permeability characterization model for micro-units of fractured reservoirs in the second member of the Fu Formation in the Jinhu Sag;

[0051] Using formulas (2)-(4), the dis...

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Abstract

The invention relates to the field of oil and gas field exploration and development, in particular to a crack development pattern and reservoir matrix-crack permeability sensitivity prediction method.The method comprises the steps of on the basis of establishing a dual-hole dual-permeability indication model of a crack reservoir microelement, conducting simulation to obtain pore permeability parameter distribution of cracks, conducting crack multi-parameter simulation through a fine small block geologic model, and dividing development patterns of the cracks in different areas; utilizing porepermeability parameter distribution of a matrix to establish a reservoir matrix-crack permeability sensitivity math model; finally, preferentially selecting a reservoir exploration and development block. The crack development pattern and reservoir matrix-crack permeability sensitivity prediction method has high practical value to multi-value development pattern and reservoir matrix-crack permeability sensitivity prediction; meanwhile, the prediction cost is low, the operability is high, and a prediction result has practical significance for crack reservoir exploration and development.

Description

technical field [0001] The invention relates to the field of exploration and development of oil and gas fields, in particular to a fracture development model and a reservoir matrix-fracture permeability sensitivity prediction method. Background technique [0002] With the continuous development of oil and gas exploration and development, people pay more and more attention to low porosity and low permeability fractured reservoirs. Since such reservoirs often have problems such as excessively fast productivity depletion during the development process, in order to reduce the reservoir damage caused by the sensitivity of reservoir matrix-fracture permeability as much as possible, it is necessary to establish Fracture development model, and predict reservoir matrix-fracture permeability sensitivity, and optimize reservoir exploration and development areas. [0003] In the study of fracture quantitative prediction, many scholars focus on the development sequence, development type...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G06F17/50
CPCG01N33/24G06F30/367
Inventor 刘敬寿
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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