A Study on Liquid Extraction Method in High Water Cut Stage of Bottom Water Reservoir in Luliang Oilfield

doi:10.11885/j.issn.1674-5086.2020.09.08.01

Abstract

Abstract: According to the problems in actual production of bottom water reservoir in Luliang Oilfield, the development characteristics and liquid extraction effect of typical bottom water reservoir are analyzed through comprehensive utilization of geological research, logging interpretation, production test, production test and development performance, and the key factors affecting the difference of liquid extraction are identified. The mechanism of liquid extraction and potential tapping is clarified through the classification and description of remaining oil. Combined with the actual production performance and mechanism model, the influence rules of reservoir thickness, extraction time, single well recovery degree and water avoiding thickness on liquid extraction effect are clarified. From the geological point of view, the reservoir thickness and oil thickness ratio are the objective conditions affecting the liquid extraction effect, which need to be considered in the selection of wells for liquid extraction; from the development point of view, the amplitude and timing of liquid extraction are the key factors affecting the liquid extraction effect, which need to be fully proved in the formulation of liquid extraction scheme; for bottom water reservoir, the limit of water avoiding thickness on the maximum liquid production rate is more important.

Key words: reservoir thickness, oil thickness ratio, liquid extraction amplitude, water avoiding thickness, time of liquid extraction

CLC Number:

TE341

WU Congwen, MA Yanqing, FAN Saihua, WU Hongju, XIE Hui. A Study on Liquid Extraction Method in High Water Cut Stage of Bottom Water Reservoir in Luliang Oilfield[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(5): 98-104.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2020.09.08.01

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2022/V44/I5/98

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