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Numerical simulation of fracture path and nonlinear closure for simultaneous and sequential fracturing in a horizontal well
Institution:1. Faculty of Engineering, China University of Geosciences, Wuhan, PR China;2. State Key Laboratory of Petroleum Resources and Prospecting, Beijing, PR China;1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, China;2. Engineering Technology Research Institute of PetroChina Southwest Oil and Gas Field Company, Guanghan, Sichuan, China;3. Sichuan Key Laboratory of Shale Gas Evaluation and Production, Guanghan, China;1. IMSIA, UMR EDF-CNRS-CEA-ENSTA ParisTech, Universit Paris-Saclay, 7 boulevard Gaspard Monge, 91120 Palaiseau, France;2. Université de Lorraine, ENSG; CNRS; CREGU; GeoRessources Laboratory, F-54501 Vandoeuvre-Lès-Nancy, France;3. IFP Energies Nouvelles, 92852 Rueil-Malmaison Cedex, France;1. School of Mining Engineering, Faculty of Engineering, University of New South Wales, Sydney, Australia;2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China;1. College of Engineering, Peking University, Beijing 100871, People''s Republic of China;2. Department of Petroleum Engineering, Colorado School of Mines, Golden 80401, CO, USA;3. School of Petroleum Engineering, China University of Petroleum, East China, Qingdao 266580, People''s Republic of China;4. CNPC CHUANQING Drilling Engineering Company Limited, People''s Republic of China;1. Department of Energy Resources Engineering, Seoul National University, Seoul, South Korea;2. CSIRO Enery, Commonwealth Scientific and Industrial Research Organisation (CSIRO), PO Box 883, Kenmore, QLD 4069, Australia;1. Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA, USA;2. Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, USA
Abstract:Reservoir stimulation requires a model to evaluate the fracture path and closure for the simultaneous or sequential propagation of the hydraulic fracture (HF). This paper presents a fluid-solid coupled model to simulate multi-stage HF propagation. A non-linear joint model is proposed to evaluate the fracture closure when the created fractures are elastically propped. HF closure continues until the balance of external stress matches the proppant's resistance. The reservoir along the horizontal wellbore is not stimulated equally by the multi-stage fracturing. The HFs in the subsequent stage are ‘repelled’ and restrained by the HFs in the previous stage.
Keywords:Horizontal well  Sequential fracturing  Hydraulic fracturing  Stress interaction  Multi-stage fracturing  Simultaneous fracturing
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