Fine Reservoir Description And Development Policy Study Of The Lower Submember Of Es-2 In Tuo 142 Block Of Shengtuo Oil Field

The technology of detailed reservoir description is an important one of enhancing recovery for high water-cut stage in shengli oilfield. Through the study of"the ninth-five years and the ten-five years",a set of associated technologies of detailed reservoir description and remaining oil distribution study has basically developed and achieved distinct results, which play an important role for enhancing recovery of old oilfield.Tuo 142 block in Shengtuo oil field is an important productivity plan of new developed areas during the ten-five years of shengli oilfield, 23.6×104t of year productivity ,awarded good development plan of SNPEC in 2000, awarded high effectives project of rolling exploration and development and the important discovery in 2001.This block experienced two stages of development of natural energy and water injection Since being put into producing in 1999, up to now, this block has 51 producers and 21 injectors, 736t/d daily production, 80.8% water cut, average working fluid level is 1148.4m, 17.5% recovery degree. Some problems has arisen and becoming serous including interlayer interference, incomplete well pattern, insufficient liquid supply, and low productivity. Therefore Detailed reservoir description must to be done again and lay good foundation on improving development effects and enhancing recovery.The study was made as follows: firstly stratigraphic frame model was built on the basis of the subdivision and correlation of time deposition unit. Secondly microstructure models is built, combined with 3D seismic data analysis. Then, according to core well data, reservoir property was analyzed and built property model that can show heterogeneity of reservoir. Finally recalculated reserves of every time unit and every single sand body and built detailed 3D geological models. Based on reservoir engineering and numerical simulation comprehensive study, defined remaining oil distribution and where is the potential areas. The recovery will be increased by 61%, and accumulative accretion of production will be 75.6×104t after the operation of regulation plan...