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Method and system for identifying water flow dominant channels of high-water-content oil field

A dominant channel and identification method technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low identification accuracy of the dominant channel of water flow without considering the average water injection volume, the instantaneous water injection volume of cumulative flushing time, etc. Unsuitable for wide application and other problems, to achieve the effect of improving the effect of water injection development

Active Publication Date: 2012-04-18
PETROCHINA CO LTD
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Problems solved by technology

However, the traditional water absorption profile method, logging data method and fuzzy mathematics method can only analyze the water absorption profile data, wellhead pressure and fuzzy clustering model, and do not take into account the relevant parameters such as average water injection volume, cumulative flushing time and instantaneous water injection volume. At the same time, the traditional logging curve and water absorption profile data analysis method is simply to compare the data points with the model, and the accuracy of the water flow dominant channel identification is low, which is not suitable for wide application

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  • Method and system for identifying water flow dominant channels of high-water-content oil field

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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] figure 1 A flow chart of a method for identifying water flow dominant channels in high water-cut oilfields provided by an embodiment of the present invention, consisting of figure 1 As can be seen, the method includes:

[0023] S101: Collect parameters between oil and water wells in high water-cut oilfields in units of layers.

[0024] The parameters mentioned in the present invention mainly include five types of parameters between injection and produ...

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Abstract

The embodiment of the invention provides a method and a system for identifying a water flow dominant channels of a high-water-content oil field. The method comprises the following steps of: acquiring parameters of between oil wells and water wells taking layer as a unit of the high-water-content oil field; performing statistical analysis on the parameters to obtain the proportion of the parameters in falling intervals; generating a model corresponding to the parameters according to the proportion of the parameters in the falling intervals; and identifying the water flow dominant channels among layers of the oil wells and the water wells according to the model corresponding to the parameters. A normal distribution model of each parameter is formed by acquiring the parameters related to thewater flow dominant channels; and an identification system for identifying the water flow dominant channels is formed by establishing an identification standard of the water flow dominant channels and applying the normal distribution model of each parameter so as to improve the water flooding development effect of the high-water-content oil field.

Description

technical field [0001] The present invention relates to the field of oilfield development, in particular to the field of high water-cut oilfield development, and specifically relates to a method and system for identifying water flow dominant channels in high-water-cut oilfields. Background technique [0002] For layered water-injection sandstone reservoirs, with the continuous deepening of oilfield development, when the development enters the late stage of high water-cut oilfields, due to the increasingly prominent contradictions between layers, planes, and layers in the oilfield, serious water injection ineffective circulation occurs. Stabilizing oil and controlling water in high water-cut oilfields has caused great difficulties, directly affecting the effect of water flooding development. [0003] The above-mentioned problems in water injection development in high water-cut oilfields can be effectively improved through deep water control and flooding, and the identificatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 张吉群邓宝荣常军华许晓明李华李巧云宋杰谷小清李建芳陈立生
Owner PETROCHINA CO LTD
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