Research On Extract Method Of Remaining Oil In Pubei Oilfield Pu135 Zone

Construction of putaohua oilfield of daqing changyuan secondary tectonic belt in the south of a three-stage structure, due to the fault development, enrichment of remaining oil is mainly controlled by fault.With the deepening of oilfield development and the deepening of the understanding of residual oil fault edge, to carry out the remaining oil research for fault edge is more and more attention, and in the salt on the way has been relatively mature techniques.Aiming at the problems facing the development, research on the fault of remaining oil distribution features of edge, the results show that the fracture splitting containment model mainly divided into four categories: arc fault control high, cross faults control the highs, parallel fault clamping block and multilateral round of small fault block.These four types are controlled by fault block growth mechanism, namely fault controlling the remaining oil is mainly distributed near the junction of fault, because the area of stress concentration, fracture and fracture formation sequence more times, good connectivity, fault development, is the main fault controlling the remaining oil enrichment region.Based on Portugal’s 135 wellblock as the research object, based on previous research,the further study of fault displacement, stress conditions of edge, the combination of different sand body and fault, and a thorough description of fault elements, reveal the relationship between fault, reservoir and structural, formulated fault exploration of remaining oil of edge,to improve the fault oilfield recovery of edge, improve the development effect are of guiding significance.