石油实验地质2017，Vol.39Issue(6)：776-782,7.DOI:10.11781/sysydz201706776
塔里木盆地麦盖提西部地区上石炭统不整合及储层发育模式
Upper Carboniferous unconformity and reservoir development model of the western Maigaiti area, Tarim Basin
摘要
Abstract
In the western Maigaiti area in the Tarim Basin,the Carboniferous oil and gas reservoirs discovered in the Bashituo and Yasongdi areas showed a good prospect for hydrocarbon exploration.However,their development models are not clear. Unconformity characteristics were analyzed through seismic and drilling/logging stratigraphic comparison,and reservoir development features were studied combing core and seismic data.The western Maigaiti area uplifted and was eroded during the Bachu Movement in the Late Carboniferous,forming two unconformities including T55(between the Kalashayi and Xiaohaizi formations)and T45(between the Xiaohaizi and Nanzha formations). The T55 unconformity is a tectonic unconformity,and mainly formed karst geomorphologies such as uplift,slope and valley.It developed two karst systems, the vadose zone and shallow undercurrent belt, and the deep undercurrent belt. Favorable reservoirs mainly locate on karst slopes. The T45unconformity is a stratum unconformity controlled by paleotopography and eustatic movement.Dolomitic reservoirs and fresh water leaching reservoirs developed in intraplat?form shoal with high landform in the highstand system tract in the Xiaohaizi Formation.关键词
高位体系域/不整合面/碳酸盐岩储层/石炭系/塔里木盆地Key words
carbonate reservoir/highstand system tract/unconformity/Carboniferous/Tarim Basin分类
能源科技引用本文复制引用
姜海健,罗云,李群,周雨双..塔里木盆地麦盖提西部地区上石炭统不整合及储层发育模式[J].石油实验地质,2017,39(6):776-782,7.基金项目
中国石化西北油田分公司项目(KY2014-S-059)资助. （KY2014-S-059）
