Fine Reservoir Description Of Yanchang Formation Reservoir Of Zheng72Area In Xiqu Oil Field

Delicate reservoir deseription research is an inter-discipline subject consisting of geology,geophysicology, reservoir engineering, numerical simulation technology and others. It carries outreservoir characteristics comprehensive research and analyzes development performance andwater flooding effect. The aim is to understand reservoir more accurately and figure out of residua oildistribution under the ground. It predicts and demonstrates the oilfield development adjustmentplan, optimizes production measures by establishing three-dimensional geological model andperforms numerical simulation.In this research, we apply the methodology and theory of Fine Reservoir Description to study thearea, Zheng72area in Xiqu oil field, which has been exhibited imperfection ofinjection-production patterns, big discrepancy of layered water flooding effect, the increasingtrend of Water-injection pressure, and difficulties of acquireing accurate material. Amulti-disciplinary combination method was used to solve the problems and the contradict existing inZheng72area.The geological research in this paper include stratigraphic fine division and correlation，depositional microfacies and distribution of sandbody units，framework characteristics of reservoir,property distribution of reservoir and Classific evaluation.Zheng72Area is low porosity, permeability and resistivity reservoir with heavy heterogeneity. Thepaper establish three-dimensional geological model, in the basis of reservoir comprehensivecharacteristics of research in detail, analyse development performance and regularities ofoil-water distribution of assise of the Zheng72, evaluate the adaptability of the existing wellnetwork and technology policy, in order to improve greatly ultimate recovery, therefore, we putforward to transfer some oil well in to water injection well, drill more oil wells, improve Wellnets, in the basis of the existing well and row spacing.