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Optimization design of integral fracturing parameters for four-spot well pattern with horizontal fractures

ZHANG Shi-cheng 1 WEN Qing-zhi 1 WANG Feng-he 2 ZHANG Guo-liang 2 (1.University of Petroleum,Beijing 102249,China; 2.Daqing Oil Field Company,Limited,Daqing 163710,China)  
After employed tertiary infilling,four-spot well pattern has been applied in part of blocks in Changyuan interior of Daqing Oilfield.Due to the close well spacing and complicated oil-water relationship in the reservoir,it is necessary to choose some appropriate fracture parameters during hydraulic fracturing,in order to avoid premature water breakthrough in oil wells.Aiming at the characteristics of horizontal fractures formed in four-spot well pattern by using hydraulic fracturing and according to the geologic features of non-tabulated reservoirs in Sanan Oilfield,a production model for predicting operation of oil and water wells was build up.With the purpose of increase in oil production,oil recovery and economic benefit,some fracture parameters such as radium and conductivity were optimized.The better stimulation and economic benefits have been achieved in Sanan Oilfield.The result can provide theoretical references to the optimization of fracture parameters in integral fracturing stimulation in such kind of oil field.
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