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Seepage boundary determination method, device and equipment

A seepage and boundary technology, applied in earthwork drilling, design optimization/simulation, special data processing applications, etc., can solve problems such as the inability to accurately determine the seepage boundary of low-permeability tight gas reservoirs

Active Publication Date: 2020-12-04
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a method, device and equipment for determining the seepage boundary, so as to solve the problem that the seepage boundary of low-permeability tight gas reservoirs cannot be accurately determined in the prior art

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  • Seepage boundary determination method, device and equipment
  • Seepage boundary determination method, device and equipment
  • Seepage boundary determination method, device and equipment

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Embodiment Construction

[0021] The principle and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, rather than to limit the scope of the present application in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0022] Those skilled in the art know that the embodiments of the present application may be realized as a system, device, method or computer program product. Therefore, the disclosure of the present application can be specifically implemented in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0023] Although the processes described below include mul...

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Abstract

The invention provides a seepage boundary determination method, device and equipment. The method comprises the steps that a triangulation network of a target area is obtained, wherein each vertex of the triangulation network represents the central point of one well; according to the triangulation network, multiple target triangles taking the central points of the target wells in the target area asvertexes in the triangulation network are determined; a seepage balance point of each target triangle of the multiple target triangles is determined; and according to the seepage balance point of each target triangle, the seepage boundaries of the target wells are determined According to the embodiment, the seepage balance points are the points with the seepage velocity vector sum of 0, so that the seepage balance points of the same triangle are the same, the seepage boundaries of the adjacent gas wells cannot be overlapped and cannot generate dead angles, the determined seepage boundaries can completely cover a well area where dividing to obtain the seepage boundaries is needed, and a foundation is laid for optimization of gas well yield, calculation of dynamic reserves and design and optimization of a well pattern.

Description

technical field [0001] The present application relates to the technical field of geological exploration, in particular to a method, device and equipment for determining seepage boundaries. Background technique [0002] Tight sandstone gas, also known as tight gas, usually refers to low-permeability-ultra-low-permeability sandstone reservoirs that have no natural productivity and must undergo large-scale fracturing or special gas recovery techniques to produce economically valuable natural gas. From the perspective of petrophysical properties It is defined as gas reservoirs with low porosity, low permeability, low gas saturation, high water saturation and relatively slow flow in sandstone layers. Tight sandstone gas reservoirs are mostly distributed in areas with complex geological structures, featuring various types, complex accumulation, and difficult exploration. 80% of the gas reservoirs are located in tight sandstone gas traps. Due to the poor physical properties and lo...

Claims

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Application Information

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IPC IPC(8): E21B49/00G06F30/20
CPCE21B49/00G06F30/20
Inventor 田冷黄灿黄诗慧王恒力柴晓龙
Owner CHINA UNIV OF PETROLEUM (BEIJING)