The Research Of Improving Extent Of Chang6₁in Northern Part Of Chuan Kou Oil Field

Although the physical property of Chang6reservoir in Chuankou Oilfield is good, the productivity is low.In order to analyse the quality of reservoir, physical property and the reason of minor production, research projects like reservoir distribution, development status,evaluation of producing reserves have studied.According to the vertical rules of reservoir, there are10small reservoirs from top to bottom—changl to chang10.The sedimentary facies of Chang61reservoir in Chuankou Oilfield is deltaic facies.By means of combining physical property,pore structure,diagenism,features of sedimentary facies, heterogeneity and well test interpretation together, Channg61reservoir is devided into three different levels.Making research on the dynamic water flooding regime, the pressure systerm, the analyses about water drive performance, the evaluate about dynamic crack and the accommodation of the well network, aiming at dynamics changes and then evaluating the period of natural energy development, the period of waterflood development and the effectiveness of the oil/water wells measures. Above-mentioned research lay a foundation of advancing reserves producing degree.The reserves producing degree and the waterflood producing degree are low, we can use water flat flooding calibration, injection well inject isolation of individual zones, consummate water flooding regime, window cutting of the oil wells of encrypt well, open new oil layer technique, encapsulate swept layer, reconstruction about multiple fracturing, broken down with the oil wells technique, injecting water along the cracking and making interspaced well to advance the reserves producing degree。On the basis of different distinguishing feature, proposing extensional meatures.Above all,on the basis of wells layering, arranging part of flooded region, developing experiment of separate zone water injection.