论文部分内容阅读
以油藏数值模拟为手段对渤19断块的水驱进行综合评价,结果表明:渤19断块目前各油层采出状况很不均衡,主力油层“顶端优势”加剧——采出程度高、含水高,原主力油层的剩余储量仍然保持其主力地位。基于目前井网,对层系的数值模拟预测的水驱采收率仅为35.4%。在水驱研究的基础上,对该断块进行聚合物驱和交联聚合物驱数值模拟优化研究,结果表明:以第一段塞0.05PV(聚合物浓度2000mg/L,交联剂浓度800mg/L)加第二段塞0.20PV(聚合物浓度1500mg/L,交联剂浓度600mg/L)的交联聚合物驱为最优方案,最优方案下的吨聚合物增油为86t,可提高原油采收率8.42%。
The comprehensive evaluation of the waterflooding in the Block Bo 19 by means of reservoir numerical simulation shows that the current oil production status of the Bo 19 block is very uneven. The “top advantages” of the main oil layers are exacerbated - High water content, the remaining reserves of the main oil reservoirs still maintain their dominant position. Based on the current well pattern, the waterflood recovery predicted by the numerical simulation of the strata is only 35.4%. Based on the study of waterflooding, the polymer block polymer flooding and cross-linked polymer flooding numerical simulation optimization study showed that: the first paragraph plug 0.05PV (polymer concentration 2000mg / L, cross-linking agent concentration 800mg / L) plus the second plug 0.20PV (polymer concentration 1500mg / L, cross-linking agent concentration 600mg / L) of the cross-linked polymer flooding as the optimal program, the optimal scheme of the tons of polymer oil 86t, can improve the recovery rate of crude oil 8.42%.