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Special Topics & Reviews in Porous Media: An International Journal
ESCI SJR: 0.277 SNIP: 0.52 CiteScore™: 1.3

ISSN Imprimir: 2151-4798
ISSN En Línea: 2151-562X

Special Topics & Reviews in Porous Media: An International Journal

DOI: 10.1615/SpecialTopicsRevPorousMedia.2019028234
pages 231-243

SEMI-ANALYTICAL SOLUTION FOR TRANSIENT INFLOW PERFORMANCE RELATIONSHIP OF MULTIPLE-FRACTURE HORIZONTAL WELLS (MFHWS) IN TIGHT OIL RESERVOIRS

Hongjun Yin
College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
Xingke Li
College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China; Oil and Gas Engineering Institute of the Jilin Oilfield, Songyuan, Jilin, 138000, China
Cuiqiao Xing
College of Petroleum Engineering, Northeast Petroleum University, Heilongjiang Daqing, 163318, China
Huiying Zhong
College of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China
Ermeng Zhao
Department of Petroleum Engineering, China University of Petroleum, Qingdao, 266580, China
Yikun Liu
College of Petroleum Engineering, Northeast Petroleum University, Heilongjiang Daqing, 163318, China
Chunsen Zhao
College of Petroleum Engineering, Northeast Petroleum University, Heilongjiang Daqing, 163318, China

SINOPSIS

Steady flow is usually assumed on traditional inflow performance relationship (IPR) curves, not as a function of time. However, tight oil reservoirs may take several years to reach stabilization due to extremely low permeability. As a result, the establishment of transient inflow performance relationship for multi-fracture horizontal wells (MFHWs) for complex production rules conditions is urgently needed. We created a semi-analytical flow model of MFHWs based on trilinear flow and superposition principle. The approach can be used to generate IPR curves with consideration of production history under production rules of constant flowing wellbore pressure, constant production rate, intermittent production, or even more complex production rules conditions. A remarkable advantage of the proposed method is that the model is no longer limited by constant flowing wellbore pressure or production rate conditions in comparison to the previous analytical model, so transient IPR curves can be generated based on production history matching. On a traditional IPR curve, the intercept is the average reservoir pressure. However, the transient IPR intercept is not representative of the average reservoir pressure but equals the well pressure if the well were shut-in for that duration, and the curves are affected by the production history. It is essential to plot transient IPR curves, and the change of production history should be considered in tight oil reservoirs. The methodology and results presented in this article are practical, and can be used directly for production forecasting and nodal analysis of MFHWs in tight oil reservoirs.

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