Research On Well Infill Technology In Sapu Oil Reservoir Of Daqing Peripheral Oilfield

Application of this paper for 66 blocks in Daqing Peripheral Oilfield Sapu oil layer has been developed. Through the investigation of low permeability reservoir development technology at home and abroad, according to the geological conditions of Daqing Peripheral Oilfield Sapu oil layer and development situation, analysis of the adaptability of dynamic characteristics of oilfield development and well pattern development technology. The application of non Darcy flow theory, reservoir engineering method and numerical simulation method, to determine the adjustment scheme of Daqing Periphery Oilfield encryption Sapu oil layer of special low abundance block network. Following results are obtained in the process of research:1, the application of the principal component analysis method of parameter sets are common factor extraction and comprehensive use of cluster analysis and discriminant analysis method of Sapu oil layer 66 developed blocks are classified is divided into three categories: a class of block 19, second class block 19, three kinds of block 28.2, through to show all kings of block adjustment adaptability analysis and effect evaluation, a class and second class most of the adaptability better, well pattern infilling adjustment can enable control degree of water flooding increased an average of 13%, production rate average increase 0.26%, recovery rate was increased by an average of 5.7%; determine infill adjustment for a class of block 13 low moisture difference. 2 to encrypt adjustment, the second class block suitable for well center encryption encryption.3, through to increase the potential of remaining oil, boundaries, location selection of encryption that Sapu oil layer has 38 block encryption potential, the potential of 843 wells with encryption, under the condition of oil prices 65$/b, single well economic limit production 0.99 t, single well economic limit cumulative production volume 2010 t, encryption well spacing thickness limit 3.3m.The results of this study because of pertinence and practicability, and has important significance to improve the development effect of peripheral Sapu oil layer, but also for the development of the design and development of similar oil fields provide a favorable reference adjustment.