Pore, cave and fissure three-dimensional distribution representation method in oil-gas reservoir

A technology for oil and gas reservoirs and three-dimensional distribution, which is applied in the fields of resource exploration and geology, and can solve problems such as incomplete representation and inability to express

Active Publication Date: 2015-10-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing technical solutions usually can only describe the distribution of pores, holes, and fractures within a certain scale, while ignoring the distribution of pores, holes, and fractures within other scales, and cannot integrate the information of pores, holes, and fractures developed in geological bodies. , so this representation is incomplete
In practical applications, this method either charact

Method used

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  • Pore, cave and fissure three-dimensional distribution representation method in oil-gas reservoir
  • Pore, cave and fissure three-dimensional distribution representation method in oil-gas reservoir
  • Pore, cave and fissure three-dimensional distribution representation method in oil-gas reservoir

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Embodiment Construction

[0021] In order to better illustrate the specific implementation steps and effects of the present invention, the applicant took an experiment conducted by our company in a porous carbonate reservoir in Iraq as an example to illustrate the specific application process of the method of the present invention. The examples provided below are only illustrative and do not constitute a specific limitation on the present invention.

[0022] Such as figure 1 As shown, the specific application process of the characterization method of the present invention is shown. The above process will be described in detail below in combination with the applicant's practice in a porous carbonate reservoir in Iraq.

[0023] First, identify the distribution of holes, holes, and seams at various scales. The specific method is:

[0024] ①Microscopic observation, identifying the microscopic distribution of pores and fractures and their filling characteristics in fluid deposit reservoirs, and forming mi...

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Abstract

The invention discloses a pore, cave and fissure three-dimensional distribution representation method in an oil-gas reservoir, which comprises the following steps: 1, pores, caves and fissures in the oil-gas reservoir are recognized through observation; 2, according to reservoir permeability of the pores, the caves and the fissures, pore, cave and fissure combination types are distinguished, and the combination types are mapped to corresponding reservoir permeability medium phase types; and 3, on the basis of reservoir permeability medium phase data discrete processing, a random modeling method is used for establishing a reservoir permeability medium phase model for representing pore, cave and fissure three-dimensional distribution. According to the disclosed representation method, cross-scale transfer and multi-space fusion of the pore, cave and fissure information can be realized, and multi-scale pore, cave and fissure space distribution features are described in the same geological model.

Description

technical field [0001] The invention relates to a distribution characterization method, in particular to a three-dimensional distribution characterization method of reservoir pores, caves and fractures in oil and gas exploration, and belongs to the fields of resource exploration and geology. Background technique [0002] Pores, caves, and fractures are the places where fluid deposits depend on for storage. The identification and characterization of pores, caves, and fractures is one of the problems that must be solved first in the process of exploration and development of fluid deposits. At present, people have developed various technologies for identifying holes, holes, and cracks, relying on these technologies to identify holes, holes, and cracks of various scales, as small as nanometers, roughly meters to tens of meters, but the identified holes, holes , Seam data processing has always been one of the difficult problems in this field for a long time. [0003] Due to the ...

Claims

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Application Information

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IPC IPC(8): G01V9/00G01V1/00
Inventor 欧成华李朝纯
Owner SOUTHWEST PETROLEUM UNIV
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