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Description method and device for remaining oil/gas distribution

A technology of remaining oil and distribution, which is applied in earth-moving drilling, wellbore/well components, measurement, etc., can solve the problem of low distribution efficiency of remaining oil/gas, and achieves high accuracy, intuitive expression, and small amount of calculation. Effect

Pending Publication Date: 2020-03-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for describing the distribution of remaining oil / gas, which is used to solve the problem of low efficiency in describing the distribution of remaining oil / gas in the prior art

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  • Description method and device for remaining oil/gas distribution
  • Description method and device for remaining oil/gas distribution
  • Description method and device for remaining oil/gas distribution

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Embodiment Construction

[0040] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0041] The invention provides a description method of remaining oil distribution, comprising the following steps:

[0042] 1) Output the node coordinates of each grid according to the reservoir numerical simulation results, and obtain the oil layer thickness H, porosity Oil Saturation S o , crude oil density ρ o , bound oil saturation S oc and crude oil volume factor B o , according to reservoir thickness H, porosity Oil Saturation S o , crude oil density ρ o , bound oil saturation S oc and crude oil volume factor B o Calculate the abundance of remaining oil reserves and / or the abundance of remaining mobile oil reserves for each grid;

[0043] 2) Calculate the center coordinates of each grid according to the node coordinates of each grid, and obtain the The abundance of remaining oil reserves and / or the abundance of remaining movable o...

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Abstract

The invention provides a description method and device for remaining oil / gas distribution. The reserve abundance of remaining oil / gas or remaining movable oil / gas is comprehensively calculated throughrelevant parameters of the remaining oil / gas, and the plane distribution of the remaining oil / gas can be intuitively described. The method has the advantages that the simplicity and the practicability are achieved, the calculation amount is small, the description efficiency of the oil / gas is improved, the problem that the description of the remaining oil is not accurate enough due to the fact that when the distribution of the remaining oil / gas is calculated, oil or gas saturation factors are only considered, and factors such as effective thickness and porosity are not considered is avoided,and the description accuracy of the calculated remaining oil / gas distribution is high through the method.

Description

technical field [0001] The invention belongs to the technical field of exploration and development of coalbed gas reservoirs, shale gas reservoirs, shale oil reservoirs or oil and gas reservoirs, and in particular relates to a description method and device for remaining oil / gas distribution. Background technique [0002] Due to the characteristics of "small, scattered, poor, and fragmented" oil storage sites, the development well pattern and reserve control degree are greatly affected by the plane distribution shape of the reservoir, and most fault blocks cannot form a perfect injection-production well pattern. As a result, complex fault-block reservoirs generally have the problem of rapid water cut rise and low recovery. How to effectively improve the understanding of remaining oil distribution is the key to improving oil recovery. [0003] With the development of computer technology, reservoir numerical simulation technology has been widely used to study remaining oil afte...

Claims

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Application Information

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IPC IPC(8): E21B47/06E21B47/07E21B47/00G06Q50/02
CPCE21B47/06E21B47/00G06Q50/02Y02A10/40
Inventor 刘国旗付明世李长春饶蕾李彦华朱浩然李霞崔英琢
Owner CHINA PETROLEUM & CHEM CORP
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