Study on Layer Combination Optimization Method of Subdivision Water#br#
Injection in High Water-cut Reservoirs

doi:10.11885/j.issn.1674-5086.2013.12.17.04

Abstract

Abstract:

In the high water cut period，even after subdivision of reservoir layers，serious problems still remain，such as interlayer
conflict and inconsistency and invalid water cycle. to solve them，subdivision water injection is an effective approach of
improving the development effect and water-flooding sweeping efficiency. The key to success of subdivision water injection is
to determine the reasonable combination of layers according to the reservoir properties and development situations of each layer.
This article adopts optimal segmentation methods，considering the Fisher principle with expertise and the various indicators
reflecting development effect. In addition，it introduces the concept of interval diameter considering the various factors to
determine the optimal scheme for layer division，which can reflect the contradiction between layers，such as permeability，
producing degree，absorption strength，restraining barrier and so on. The comparison of instance analysis with the results of
reservoir simulation shows that this method is simple but reliable and can help adjust the subdivision water injection at high
water cut stage.

Key words: high water cut reservoir, conflict of the interlayer, subdivision water injection, layer division, optimal segmentation
methods

CLC Number:

TE341

FENG Qihong1, WANG Bo2*, WANG Xiang1, YANG Yahui1, HAN Xiaodong3. Study on Layer Combination Optimization Method of Subdivision Water#br# Injection in High Water-cut Reservoirs[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.12.17.04.

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Study on Layer Combination Optimization Method of Subdivision Water#br# Injection in High Water-cut Reservoirs

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