准噶尔盆地阜康凹陷康探1井重大突破及意义

doi:10.3969/j.issn.1672-7703.2021.02.001

摘要/Abstract

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。

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

Abstract: Recently, a major breakthrough has been achieved in lithologic reservoirs in the eastern slope of Fukang Sag—Well
Kangtan 1, a risk exploration well of PetroChina, which obtained high yield oil flow of more than 100 tons from each of the two
layers in the Permian. The favorable conditions for hydrocarbon accumulation have been systematically discussed based on understandings of Well Kangtan 1 to evaluate the exploration potential and prospects in Fukang Sag. Results show that there are two sets of large-scale source rocks in the Permian and Carboniferous in Fukang Sag, which provide promising hydrocarbon source
potential. Controlled by the paleo-geomorphology, two sets of thick and large-scale reservoirs in the Middle and Upper Permian
are developed in the eastern slope and sag area with similar distribution pattern, providing favorable conditions for the formation
of lithologic-stratigraphic oil and gas reservoirs. The well-matched time-space configuration of thermal evolution of source rock
and tectonic evolution, and the late sealing conditions in the updip direction result in the differential accumulation and orderly
distribution of two-stage oil and gas reservoirs. The sag area is the main field for late accumulation of oil and gas. The three
sub-sags in the slope are favorable exploration targets in Fukang Sag, which show great potential for large-scale exploration of
lithologic reservoir in slope and sag areas.

何海清, 支东明, 唐勇, 刘超威, 陈洪, 郭旭光, 王泽胜. 准噶尔盆地阜康凹陷康探1井重大突破及意义[J]. 中国石油勘探, 2021, 26(2): 1-11.

He Haiqing, Zhi Dongming, Tang Yong, Liu Chaowei, Chen Hong, Guo Xuguang, Wang Zesheng. A great discovery of Well Kangtan 1 in Fukang Sag in the Junggar Basin and its significance#br#[J]. China Petroleum Exploration, 2021, 26(2): 1-11.

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