A method for numerical simulation of condensate oil damage of different well type of narrow channel gas reservoir

A numerical simulation, narrow channel technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of gas well productivity impact without a systematic method, lack of gas reservoir development, etc., to avoid excessive development costs , Improve development efficiency and fast operability

Active Publication Date: 2018-12-07
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology

At present, there is no systematic method for evaluating the impact of condensate oil precipitation on gas well productivity of different develo...

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  • A method for numerical simulation of condensate oil damage of different well type of narrow channel gas reservoir
  • A method for numerical simulation of condensate oil damage of different well type of narrow channel gas reservoir
  • A method for numerical simulation of condensate oil damage of different well type of narrow channel gas reservoir

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Embodiment Construction

[0044] The present invention will be further described in detail below in combination with numerical simulation methods for condensate oil damage of different well types in a narrow channel gas reservoir, but the embodiments of the present invention are not limited thereto.

[0045] figure 1 The flow chart of the numerical simulation method for condensate oil damage of different well types in narrow channel gas reservoirs according to the present invention is shown.

[0046] Such as figure 1 As shown, a numerical simulation method for condensate oil damage of different well types in narrow channel gas reservoirs provided by the present invention comprises the following steps:

[0047]Step S1: Pseudo-component division of gas well fluid composition according to similar principles of fluid component properties and equilibrium constants, and phase state fitting of gas reservoir fluids to obtain fluid PVT data required for condensate gas reservoir composition models ;

[0048] ...

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Abstract

A method for numerical simulation of condensate oil damage of different well types in a narrow channel gas reservoir includes such steps as dividing pseudo-component of gas well flow and phase state fitting to obtain fluid PVT data required by component model of gas reservoir; establishing a numerical simulation geological model according to the reservoir characteristics and boundary conditions ofnarrow channel gas reservoirs; by defining dimensionless fracture conductivity and grid size series refinement, simulating the fractures and importing the PVT data by numerical simulation software;by simulating the distribution of condensate saturation in different development wells, obtaining the law of condensate precipitation in different development wells of narrow channel gas reservoirs; establishing a black oil model to quantitatively characterize the condensate oil damage of different well types by comparing the cumulative gas production reduction range of gas wells. The invention can finely simulate hydraulic fracturing fractures, and can qualitatively and quantitatively evaluate the influence of condensate oil precipitation of different development well types on gas well productivity of narrow channel gas reservoirs.

Description

technical field [0001] The invention relates to the field of gas field exploitation, in particular to a numerical simulation method for condensate oil damage of different well types in narrow channel gas reservoirs. Background technique [0002] Condensate gas reservoirs have the characteristics of reverse condensation in a certain range of pressure and temperature. During development, retrocondensation occurs as a result of fluid phase changes when the pressure drops below the dew point pressure. When condensate gas wells are in production, the pressure drop near the wellbore is large, and the formation pressure near the wellbore is easily lower than the dew point. Therefore, serious retrocondensation damage is more likely to occur near the wellbore, resulting in a sharp drop in relative gas permeability and a decrease in gas well productivity. Reverse condensate in near-wellbore formations of condensate gas wells is a very important problem encountered in the development ...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 罗万静姚彦斌崔玉东彭越卢斌田青
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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