Characterization method and device for oil reservoir flow heterogeneity

A heterogeneity and reservoir technology, applied in the field of reservoir flow heterogeneity characterization, can solve the problems of inaccurate analysis results, unfavorable recovery factor, and inconvenience to tap the potential of remaining oil in high water cut period, and achieve the analysis results. Accurate, Enhanced Recovery Effect

Active Publication Date: 2021-02-09
PETROCHINA CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for characterization of reservoir flow heterogeneity, which can solve the problems in related technologies t

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  • Characterization method and device for oil reservoir flow heterogeneity
  • Characterization method and device for oil reservoir flow heterogeneity
  • Characterization method and device for oil reservoir flow heterogeneity

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[0055]In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0056]figure 1 It is a flow chart of a method for characterizing the flow heterogeneity of a reservoir provided by an embodiment of the present invention. The method can be applied to electronic equipment, seefigure 1 , The method to characterize the flow heterogeneity of the reservoir includes:

[0057]101. Obtain geological static information and fluid dynamic information of the target reservoir.

[0058]102. Perform numerical simulation based on the geological static information and fluid dynamic information of the target oil reservoir to obtain a numerical simulation model of the streamline field of the target oil reservoir, and the numerical simulation model includes the streamline field data of the target oil reservoir.

[0059]103. Read the streamline ...

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Abstract

The invention discloses a characterization method and device for oil reservoir flowing heterogeneity, and belongs to the technical field of oil reservoir development. The method comprises the steps: acquiring the geological static information and fluid dynamic information of a target oil reservoir, performing numerical simulation to obtain the fluid flowing speed and porosity of fluid particles corresponding to a plurality of grids and the pore volume of each grid, acquiring the flight time corresponding to each grid between injection and production wells through a formula, and through the pore volume and the flight time, acquiring the flow capacity of each grid; determining the Lorentz coefficient according to the pore volume and the flow capacity of each grid, wherein the Lorentz coefficient is in positive correlation with the flow heterogeneity of the target oil reservoir. According to the method, when the oil reservoir flowing heterogeneity is analyzed through the obtained Lorentzcoefficient, the analysis result is accurate by means of the quantified residual oil heterogeneity numerical value, the well position can be adjusted in a targeted mode in time, and the recovery rateof the residual oil in the high water cut period is effectively increased.

Description

technical field [0001] The invention relates to the technical field of reservoir development, in particular to a method and device for characterizing reservoir flow heterogeneity. Background technique [0002] Petroleum is an important strategic resource of the country and an important lifeline for the development of the national economy. With the expansion of the field of oil and gas exploration, the efficient development of high water-cut reservoirs has become one of the main battlefields for enhancing oil recovery in major oilfields. [0003] When developing a reservoir in a high water-cut period, sometimes it is necessary to refer to the heterogeneity of the reservoir, and the flow heterogeneity of the reservoir is used to characterize the extent to which reservoir parameters vary with space. In related technologies, the flow heterogeneity of the reservoir is qualitatively analyzed by counting data such as oil saturation or flow rate of water production and injection we...

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Application Information

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IPC IPC(8): G06F30/28E21B49/00G06F113/08G06F119/14
CPCE21B49/00
Inventor 赵平起倪天禄郭奇陶自强
Owner PETROCHINA CO LTD
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