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Double-pore model-based multi-medium oil gas flow simulation method and device

A flow simulation and medium technology, applied in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2016-01-20
PETROCHINA CO LTD
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Problems solved by technology

[0008] The invention provides a method and device for simulating oil and gas flow in multiple media based on a dual-hole model to solve one or more deficiencies in the prior art

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  • Double-pore model-based multi-medium oil gas flow simulation method and device

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[0042] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following further describes the embodiments of the present invention in detail with reference to the accompanying drawings. Here, the illustrative embodiments of the present invention and the description thereof are used to explain the present invention, but not as a limitation to the present invention.

[0043] The embodiment of the present invention provides a multi-media oil and gas flow simulation method and device based on a dual-hole model. The method first establishes a simulation area containing multiple media, and then divides the simulation area into a matrix structure grid system and a fracture structure grid system , Then set the media attribute parameter values ​​of the pore structure grid and the fracture structure grid according to the media type, and then establish the connection table of the pore structure grid and the fracture struc...

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Abstract

The invention provides a double-pore model-based multi-medium oil gas flow simulation method and device. The method comprises the following steps: obtaining geological parameters and oil gas development engineering geometric parameters, and establishing a simulation area with multiple mediums; dividing the simulation area into a matrix structure grid system and a crack structure grid system; respectively setting the medium attribute parameter value of a pore structure grid and the medium attribute parameter value of a crack structure grid according to the medium type of the pore structure grid and the medium type of the crack structure grid; establishing a communication table of structure grids in the pore structure grid and the crack structure grid according to a set fluid flow rule; calculating the conductivity between the structure grids; and carrying out numerical value analog calculation on the flow trend between the structure grids according to the conductivity so as to predict the dynamic change data of the compact oil gas reserves in the mediums, the contribute data for the oil gas output, the output of the wells and the formation pressure. According to the double-pore model-based multi-medium oil gas flow simulation method and device, the oil gas conditions in multiple mediums can be predicted.

Description

Technical field [0001] The invention relates to the field of oil and gas field development, in particular to a multi-medium oil and gas flow simulation method and device based on a dual-hole model. Background technique [0002] As an unconventional resource, tight oil has a solid reserve base in my country and has great development potential. Tight reservoirs have diverse media, and the scale of different media is very different. The pore structure of the rock is complex, and the pore-throat system of different scales of "nano-micro-millimeter" is developed, and the reservoir physical properties are poor. At the same time, natural fractures of different scales such as "tens of centimeter-millimeter level" macro-fractures and "millimeter-micrometer level" micro-fractures are developed, combined with artificial fractures produced by volume fracturing, forming a complex fracture network. Different time and different media have different seepage mechanisms. There are low-speed nonl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 徐梦雅彭晖李宁冉启全王志平李冉王拥军
Owner PETROCHINA CO LTD
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