摘要
利用弱凝胶在高渗透大孔道中的运移及低渗透小孔隙地层中的不可入性能 ,对存在高渗透通道的水驱油藏进行深部调驱试验 ,可以改善高含水开采期油层深部的非均质程度 ,实现油藏的稳油控水 (或增油降水 )。应用弱凝胶在辽河茨榆坨采油厂青龙台油田龙 11区块进行的整体调驱矿场试验结果表明 ,弱凝胶深部调驱可以有效地改善了严重非均质油藏高含水开采期的水驱开发效果 ,减缓了油田的自然递减速度 ,并获得较好的增油降水效果。在实施 1 5a内 ,不考虑自然递减及其他作业措施的情况下 ,区块累积增油 712 6 1t ,产水量减少 14 0 5 4m3 ,投入产出比大于 1∶7。
The weak gel has the migratory aptitude in the high_permeability path and the impenetrability in the low_transmissibility fine pore layers.The water drive reservoir with high_permeable path was deeply modified and flooded using weak gel to improve the heterogeneity degree of deep oil layers.The application effect of weak gel in Long_11 Block of Qinglongtai Oil Field in Ciyutuo Production Plant of Liaohe Field indicated that the deep modifying_flooding effect of weak gel efficiently ameliorated water_flooding development of the reservoir with high water_cut and high heterogeneity,slowed the decline rate of oil production and accomplished good result of increasing oil and reducing water.During one and a half year,the cumulative increasing oil production was 7126 1 tons,the water production was reduced by 14054 cubic meters.The input_output ratio was more than 1∶7 without considering natural decline and other operation measures.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2003年第4期58-61,共4页
Acta Petrolei Sinica
基金
中国石油天然气股份公司重点科技项目 (2 0 0 50 8 0 7 1 )
关键词
高含水油藏
区块调剖
弱凝胶
调驱剂
调剖剂
现场试验
high_water_cut reservoir
tract profile control
weak gel
modifying and flooding agent
profile modification agent
field test
