A method and a device for determining a waterflood sweep efficiency of multi-layer reservoirs

A technology of water flooding and coefficient, applied in the field of geophysical exploration and interpretation, can solve problems such as the inability to determine the sweep coefficient of different layers

Active Publication Date: 2017-07-28
PETROCHINA CO LTD
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Problems solved by technology

[0003] The current method of determining the sweep coefficient can only determine the sweep coefficient o...

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  • A method and a device for determining a waterflood sweep efficiency of multi-layer reservoirs
  • A method and a device for determining a waterflood sweep efficiency of multi-layer reservoirs
  • A method and a device for determining a waterflood sweep efficiency of multi-layer reservoirs

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[0071] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0072] refer to figure 1 As shown, the method for determining the water flooding sweep coefficient of a multi-layer reservoir in the embodiment of the present application may include the following steps:

[0073] S101. Obtain physical property parameters of each reservoir in the work area.

[0074] In an embodiment of the present applicati...

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Abstract

The embodiments of the invention provide a method and a device for determining a waterflood sweep efficiency of multi-layer reservoirs. The method comprises the steps of acquiring physical property parameters of each reservoir stratum in a work area; acquiring a waterflood front saturation of each reservoir stratum according to the physical property parameters of each reservoir stratum; determining a waterflood separate injection quantity of each reservoir stratum; determining waterflood front motion speed, breakthrough time and sweep efficiency of each reservoir stratum according to the waterflood separate injection quantity and the waterflood front saturation of each reservoir stratum. The method and the device can determine sweep efficiency of different strata in different time periods.

Description

technical field [0001] The present application relates to the technical field of geophysical exploration and interpretation, in particular to a method and device for determining the water flooding sweep coefficient of a multi-layer reservoir. Background technique [0002] The reservoir types in my country are mainly multi-layer sandstone reservoirs, with relatively strong vertical heterogeneity and large differences in vertical reservoir permeability. For water flooding to develop multi-layer sandstone reservoirs, the sweep coefficient refers to the ratio of the volume of oil layers swept by all injected water to the total volume of oil-bearing oil layers. Generally, the larger the sweep coefficient, the larger the recovery factor. Therefore, the sweep coefficient can be used to analyze the reservoir development status and development adjustment effect, evaluate the development degree of multi-layer reservoirs and determine the remaining oil reserves. [0003] The current ...

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Application Information

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IPC IPC(8): G06F17/50E21B43/20
CPCE21B43/20G06F30/20
Inventor 王俊文甘俊奇张原阎逸群周杨杨阳
Owner PETROCHINA CO LTD
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