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Li, C.L., Yang, B.X. and Cheng, L.S. (2004) A Method to Determine the Optimum Perforation Place and Height in a Vertical Well of Gas-Water Coning Reservoir. China Offshore Oil and Gas, 16, 105-106.

has been cited by the following article:

  • TITLE: Study on the Critical Production Calculation Method of the Water-Flooding Reservoir with Gas Cap

    AUTHORS: Cunliang Chen, Ming Yang, Xue Liu, Fei Shi, Meijia Liu

    KEYWORDS: Water-Flooding, Gas Cap Oilfield, Horizontal Well, Critical Production, Gas Peak Coning, Water Cut

    JOURNAL NAME: Open Journal of Yangtze Oil and Gas, Vol.4 No.1, January 30, 2019

    ABSTRACT: The aim of this paper is to solve the problems that the existing method of critical production of gas cap reservoir is only suitable for single-phase flow, and the method of critical production of gas cap reservoir under water-flooding is still blank. In this paper, the relationships between dynamic and static equilibrium, plane radial flow theory, oil-water infiltration method and three-dimensional seepage field decomposition theory, were applied to study a calculation method for critical production of directional wells and horizontal wells. Furthermore, the effects of different factors on critical output were studied, such as horizontal permeability, ratio of horizontal permeability to vertical permeability, length of horizontal section, effective thickness, viscosity of crude oil and water content etc. Results show that the critical production increases with the increment of the horizontal permeability, the ratio of the vertical permeability to the horizontal permeability, the reservoir thickness and the horizontal well length; when the viscosity of crude oil is small, the critical production decreases first and then increases with the increase of water content; when the viscosity of crude oil is high, the critical production increases continuously with the increase of water content. This study could provide theoretical and technical guidance for changing of the working system of oil wells. It can avoid gas channeling and improve the development effect.