High water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method

A layered water injection and oil reservoir technology, applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., can solve the problems of not being able to fully characterize the reservoir properties, affecting the water flooding effect of the reservoir, and complex parameters, etc., to achieve Easy to operate, reasonable division, accurate classification effect

Active Publication Date: 2019-12-27
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, for complex reservoirs with multiple oil layers in the late stage of ultra-high water cut, local mutation points appear and high water consumption zone develops, which affects the overall water flooding effect of the reservoir, and local remaining oil is enriched.
The parameters involved in development evaluation are complex, and no single parameter can fully characterize the properties of the reservoir

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  • High water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method
  • High water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method
  • High water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method

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[0045] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0046] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations and / or combinations thereof.

[0047] The control method of stratified water injection in reservoirs with high water consumption zones includes: step 1, collecting and sorting out block ...

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Abstract

The invention relates to the field of oil-gas field development, in particular to a high water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method which comprises the following steps: S1, collecting and tidying block geology and related development data; S2, applying the mathematical modeling analogy method to obtain a layered development index;S3, carrying out optimization on the water-consuming layer belt evaluation index to divide the level of the high water-consuming layer belt; S4, by combining with the development situation, screeningthe water injection adjusting and controlling horizon according to the level of the water-consuming layer belt to optimize the unit layered water injection; and S5, tidying the optimizing result to perfect the layered water injection adjusting and controlling scheme so as to carry out site implementation. According to the high water-consuming layer belt development oil reservoir layered water injection adjusting and controlling method, the level of the high water-consuming layer belt is distinguished and divided through the classifying coefficient of the high water-consuming layer belt; for different levels of the high water-consuming layer belt, the water flooding development index calculating method of the oil reservoir engineering theoretically established is combined with the optimal segmentation method theory, so that water consumption is reduced, and the economic life period of an oilfield is prolonged to finally realize the purpose of improving the oil reservoir recovery efficiency.

Description

technical field [0001] The invention relates to the field of oil and gas field development, in particular to a layered water injection control method for oil reservoirs developed in high water consumption zones. Background technique [0002] Layered water injection is to use packers to combine small layers with similar reservoir physical properties and development conditions into one layer to inject water, so as to reduce interlayer interference and improve the producing degree of small layers with poor physical properties. However, reasonable layer division is the basis of layered water injection, and it is also the main factor affecting the effect of layered water injection. At present, the most commonly used division method for layered water injection intervals is based on the division method of layer series. However, there is a significant difference between the division of layers and the division of layers in water injection wells: ① In the division of layers, each lay...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B43/14
CPCE21B43/14E21B43/20
Inventor 黄迎松杨盛波刘丽杰陶德硕刘志宏张以根赵培坤魏明
Owner CHINA PETROLEUM & CHEM CORP
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