The control effect of low-amplitude structure on oil-gas- water enrichment and development performance of ultra-low permeability reservoirs

WANG Jianmin,ZHANG San,DU Wei,LI Le,QIAO Zhen,ZHANG Jun,DUAN Mengyue

Table 1 Comparison of static and dynamic reserves controlled by two wells in the W0 injection-production well group in the north of block.

Well No. Thin layer Oil-bearing area/km2 Effective thickness/ m Effective porosity/% Oil saturation/% Static proved reserves/104 t Cumulative oil production/ 104 t Equation of Type A water drive characteristic curve Water-drive dynamic reserves/104 t W1 Chang 613 0.07 6.1 9.3 58.6 1.919 0.125 lgWp=7.207 7Np-1.958 4 1.041 W8 Chang 613 0.07 4.7 10.6 65.9 1.895 0.776 lgWp=1.307 1Np-1.659 2 5.738