Study On The Fine Geological And The Encryption Adjustment Technology Of Fang117Block

Songfangtun117block of aromatic oil into development when using the "five smallpackage," the oil injection process, and the existing process is not complete, can not bemeasured production profile and injection profile, unable to carry out targeted wateradjustment, injection wells can not be achieved stratified water, so in the process ofdeveloping more prominent contradictions.Although the high degree of control block water flooding, but because of differences inreservoir sedimentary facies and sand distribution and permeability and water injection wellscharacteristics, low water absorption well area uniformity, the obvious contradiction betweenthe layers, the low utilization level of the reservoir;Due to poor physical and poor connectivity are not fully injected water diffusion layer,resulting in a low coefficient blocks spread;Stage of the low level of recovery, low production rate, water cut rising fast.10years ofthe degree of development of mining only9.56%, production rate dropped to0.20%, up89.7%water cut oil field,39wells open only five wells, injection wells all shut, blockRESERVES IN only34.9%, compared adjacent wells and other northern oilfields blockSongfangtun average level of76.9%reserves producing low42points.To improve the ultimate recovery block, based on the geological characteristics of thereservoir, combined with the development effectiveness and economic evaluations, eachreservoir waterflood development adaptability, by carrying out geological studies and finedistribution of the remaining oil, the use of numerical simulation technology, economicevaluation techniques preferred encryption adjustment programs, to economic efficiency,application infill and system adjustment technology, enhanced oil recovery, oil fielddevelopment to improve efficiency and effectiveness.