大庆石油地质与开发2024，Vol.43Issue(4)：83-94,12.DOI:10.19597/J.ISSN.1000-3754.202401061
塔里木盆地塔东地区油气地质条件与有利地质体资源潜力
Hydrocarbon geological conditions and favorable geobodies resource potential of Tadong exploration area in Tarim Basin
摘要
Abstract
The main part of Tadong exploration area of Daqing Oilfield is located in Manxi platform margin in plat-form-basin transition zone of Tarim Basin,with low exploration degree and large resource potential.The exploration is mainly concentrated in Gucheng area,without significant breakthrough.In recent years,through re-examination of old wells and structural-lithofacies paleogeography research,basic hydrocarbon geological conditions in platform margin are clarified,favorable plays for hydrocarbon accumulation are determined,and new exploration type in Cambrian is expanded.The results show that several sets of source rocks develop in Tadong exploration area,in-cluding Yuman and Yudu rift basin facies,and slope-shelf facies.High-energy reef-beach develops inherited in Cambrian-Middle and Lower Ordovician platform margin belt,with several sets of strike-slip faults controlling reser-voir,accumulation and enrichment.2 sets of regional cap rock of"black quilt"shale and"white quilt"gypsolyte are widely distributed,forming complete source-reservoir-seal assemblages,and providing conditions for large-scale accumulation.Vertically,oil and gas are controlled by strike-slip faults and regional cap rock,mainly distrib-uted in Middle-Lower Ordovician carbonate strata.Horizontally,large-scale oil and gas enriched centering around Yuman and Yudu rift troughs.Fault-karst in upper member and reef-beach-fault-karst complex bodies in lower mem-ber of Yuman Ordovician Yingshan Formation have superior accumulation conditions and develop condensate gas reservoirs,being the most realistic benefit exploration field in Tadong area.Cambrian pre-salt reef-beaches and fault-controlled mound-beach belt have good source-seal assemblage and large resource potential,and can serve as replacement field for increasing reserves and production.Tadong exploration area presents resource scale of trillions cubic meters in many fields,and is expected to build an important base in a short period for stabilizing oil produc-tion and increasing gas production in Daqing Oilfield.关键词
塔东地区/满西台缘带/烃源岩/台缘礁滩/走滑断裂/奥陶系Key words
Tadong area/Manxi platform margin belt/source rock/platform margin reef-beach/strike-slip fault/Ordovician分类
能源科技引用本文复制引用
李强,王显东,闫博,刘洋,张斌,钟拥,曹阳,邓蕊..塔里木盆地塔东地区油气地质条件与有利地质体资源潜力[J].大庆石油地质与开发,2024,43(4):83-94,12.基金项目
中国石油天然气股份有限公司重大科技专项"塔东天然气成藏理论及勘探配套技术研究"(2016E-0204). （2016E-0204）
