摘要
塔河油田6-7区为碳酸盐岩缝洞型油藏,储集体中存在着大量剩余油等待开采。由于储集体发育较复杂,导致剩余油预测难度较大。6-7区缝洞体空间展布特征不清楚,开发、增产措施作用机制不明确。为探究剩余油的潜在分布,以地表石花洞空间展布为基础,对比分析塔河6-7区地下溶洞分布情况。采用Level Set数值法对多层缝洞型油藏的剩余油分布进行模拟,提出盲端型剩余油概念。利用模拟结果对石花洞空间展布中盲端型剩余油进行预测。well 3井在C2储层段钻遇地下暗河河道,有剩余油分布,可通过钻新井进行开采。well 2井钻遇上游河道旁侧,对C2段进行酸压可沟通储集体。
6-7 area in Tahe oilfield is a kind of carbonate fractured-vuggy reservoir,a large number of residual oil in seam hole in the reservoir are waiting for mining, but on account of the reservoir is very complex, result in the prediction of residual oil is difficult.Both the seam hole distribution pattern of 6-7 district, and the development and stimulation are not clear, for exploring the distribution of residual oil,this paper combined with the surface distribution of Shihuadong to inquiry the underground karst cave distribution in 6-7 areathen using the Level Set numerical method to predict the the distribution of residual oil in multi-layer fractured-vuggy reservoir,put forward the conception of the blind side type re-sidual oil,finally predicted the blind side type residual oil in Shihuadong by using the simulation results, well 3 in C2 res-ervoir drills in underground river channel,there distributed residual oil, and it could be exploited by drilling new new well, well 2 drill in the upstream side of the channel, acid fracturing was carried out on the C2 segment rto communicate the reservoir.
出处
《新疆地质》
CAS
CSCD
2015年第2期224-228,共5页
Xinjiang Geology
基金
国家十二五科技重大专项复杂油气藏精细表征及剩余油分布预测(2011ZX05009-003)
中国石化西北油田分公司勘探开发研究院协作项目(KY2011-S-073)
关键词
塔河油田
盲端型剩余油
石花洞
缝洞型油藏
Tahe Oilfield
The blind side oil
Shihuadong
Fractured-vuggy reservoir
