摘要
以安塞油田王窑区长6油藏目标研究井区的数值模拟历史拟合为例,针对特低渗透应力敏感油藏在历史拟合过程中出现的特殊不确定因素：油水井流动能力存在较大差异,人工压裂裂缝规模的不确定性,非储集层吸水以及边界油水井的影响等问题进行了详细研究.通过引入应力敏感模型,模拟人工裂缝,设置吸水隔夹层和虚拟井等方法很好地解决了这些问题,使得研究井区的模型拟合精度明显提高.该拟合方法可以应用到其他类似油藏的历史拟合过程中.
Taking the history matching of the numerical simulation for the target study area in Reservoir Chang-6 in Block Wangyao of Ansai Oilfield as an example, in the light of the following problems ： special uncertain factors oc- curred in the matching of the stress-sensitive extra-low-permeability reservoirs ; rather serious differences in the flow ability of oil and water wells, uncertainty of the artificial fracturing size ; non-reservoir water absorption ; influences of oil and water wells near the boundary and so on, the studies are conducted in detail. By means of the following methods such as introducing stress-sensitive model, simulating artificial fractures, setting isolated interlayers and virtual wells and so forth, the problems stated above are solved, thus the matched precision of the models for the study area is obviously enhanced. The matching method can be applied in the history matching process of other sim- ilar oil reservoirs.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2014年第2期73-76,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
国家科技重大专项“复杂油气田地质与提高采收率技术”(2011ZX05009)
国家自然科学基金委员会“超低渗透油藏注气提高采收率理论与技术研究”(U1262101)
关键词
特低渗透油藏
应力敏感
非储集层吸水
数值模拟
历史拟合
extra-low-permeability oil reservoir
stress-sensitive
non-reservoir water absorption
numerical simu-lation
history matching
