Research On Optimization Of Injection Parameters In Advanced Source 121-3 Block

The source 121-3 block belongs to Zhaoyuan oilfield, which is located in Zhaoyuan County of Heilongjiang city of Daqing Province, tectonically located in the central depression of Songliao basin area in the west of Zhaoyuan Chaoyanggou terrace nose like structure. The source 121-3 block is a typical hole in low permeability reservoir, with low permeability, oil flow resistance, the ability to conduct differential pressure, the starting pressure gradient exists, the oil production of low formation pressure, once the decline features is difficult to recover. Well after the operation, due to energy consumption but has not timely supplement,resulting in the decline of production, resulting in the decrease of formation pressure,reservoir pore structure changes, rock deformation, resulting in formation porosity decreases,permeability decreased, is not conducive to the source 121-3 block mining.In this paper, the numerical simulation method for source 121-3 block advance waterflooding matching measure combination optimization research, by predicting the development effect of common well fracturing and fracture orientation determined optimal solutions, as the source 121-3 block for the implementation of advanced water injection technology and field test scheme design provides a theoretical and technical guidance.Through to advanced study and field test of water flooding mechanism, established the effective drive for system pressure, the formation pressure has always maintained a relatively high level, reducing the formation damage caused by the decline of formation pressure,inhibit the initial moisture content of oil wells, so as to improve the operation of the early oil production, oil can be maintained for a long period of stable, slowed the decline, to improve ultimate recovery.