准噶尔盆地阜康凹陷康探1井重大突破及意义  

A great discovery of Well Kangtan 1 in the Fukang Sag in the Junggar Basin and its significance

作　　者：何海清 支东明[2] 唐勇[2] 刘超威 陈洪[2] 郭旭光[2] 王泽胜[2] He Haiqing;Zhi Dongming;Tang Yong;Liu Chaowei;Chen Hong;Guo Xuguang;Wang Zesheng(PetroChina Exploration&Production Company;PetroChina Xinjiang Oilfield Company)

机构地区：[1]中国石油勘探与生产分公司,100007 [2]中国石油新疆油田公司,834000

出　　处：《中国石油勘探》2021年第2期1-11,共11页China Petroleum Exploration

基　　金：国家科技重大专项“准噶尔盆地岩性地层油气藏富集规律与目标评价”(2017ZX05001-004);中国石油天然气股份有限公司重大科技专项“准噶尔盆地油藏富集规律及勘探技术研究与应用”(2017E-04-01)。

摘　　要：近期中国石油风险探井康探1井在二叠系两层连获百吨高产,实现了准噶尔盆地阜康凹陷斜坡区岩性油气藏的重大突破。为评价阜康凹陷勘探前景,基于康探1井钻探认识,系统梳理和总结阜康凹陷大油区有利成藏条件,指明下一步勘探方向。研究表明,阜康凹陷发育石炭系和二叠系两套规模有效烃源岩;受古地貌控制,在斜坡区和凹陷区发育中、上二叠统两套规模储集体,分布格局相似,厚度大,具备形成大型岩性地层油气藏的条件;烃源岩演化与构造演化时空匹配,晚期上倾方向封堵条件的形成造就了两期油气的差异聚集和有序分布,凹陷区为晚期油气规模勘探领域。阜康凹陷坡下三大凹槽区是有利的勘探方向,展现了斜坡区和凹陷区岩性油藏规模勘探潜力。Recently,a major breakthrough has been achieved in lithologic reservoirs in the east slope of Fukang Sag from Well Kangtan 1,a risk exploration well of PetroChina,which obtained high yield oil flow of more than hundred tons from the Permian.In order to evaluate the exploration potential and targets in the Fukang Sag,favorable conditions for hydrocarbon accumulation were systematically discussed on the basis of the understandings from Well Kangtan 1.The results show that two sets of large-scale source rocks of Permian and Carboniferous are developed in the Fukang Sag,promising a favorable source potential.Controlled by the paleo-geomorphology,two sets of thick reservoirs of Middle and Upper Permian are developed in the east slope and sag areas with similar distribution pattern,which provide favorable conditions for the formation of lithologic-stratigraphic reservoirs.The spatial and temporal matching relation of source rock thermal evolution and tectonic evolution,and the late sealing conditions in the updip direction result in the differential accumulation and orderly distribution of twostage oil and gas reservoirs.The sag area is the main exploration field for late accumulation of oil and gas.The three sub-sags in the slope are favorable exploration targets in the Fukang Sag,which show great potential of large-scale exploration of lithologic reservoir in slope and sag area.

关 键 词：准噶尔盆地 阜康凹陷 二叠系 重大突破 成藏条件 勘探潜力 

分 类 号：TE122[石油与天然气工程—油气勘探]