摘要
水平井蒸汽驱在开发薄层稠油油藏方面具有显著优势。采用双水平井驱替系统,对非均质薄层稠油油藏的蒸汽腔发育过程进行了监测分析,研究了均质地层、存在单条低渗条带、2条低渗条带非均质地层条件下的生产动态特征。结果表明:蒸汽几乎不波及低渗条带,从而降低了蒸汽对整个地层的波及程度;非均质性地层易产生汽窜通道,使无水采油期缩短,含水率上升速度加快,导致采出程度降低。实验结果为在非均质薄层稠油油藏中实施水平井蒸汽驱提供了参考。
Steam flooding in horizontal well is very advantageous in developing thin reservoir of heavy oil. With displacement system of double horizontal wells,the evolution of steam chamber of heterogeneous and thin reservoir of heavy oil has been monitored and analyzed. The features of production performance in homogeneous formation,information with a single belt with low permeability and information with two belts with low permeability have been studied. The results indicate that steam hardly swept the belts with low permeability,so that the swept degree of the whole formation by steam decreased. In homogeneous formation,gas channeling may be easily formed,which will shorten the water-free production period and accelerate the increase of water cut,leading to lower recovery degree. The experimental results provide references for the operation of steam flooding in horizontal wells in heterogeneous and thin reservoir of heavy oil.
出处
《特种油气藏》
CAS
CSCD
北大核心
2015年第2期108-110,156,共3页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"大型油气田及煤层气开发"(2011ZX05012-004)"薄层稠油和超稠油开发技术"课题内容
关键词
薄层稠油油藏
非均质
水平井
蒸汽驱
物理模拟
thin heavy oil reservoir
heterogeneous
horizontal well
steam flooding
physical simulation
