塔中地区北坡志留系晚期油气充注证据及控制因素

发布时间：2018-05-31 14:37

本文选题：流体包裹体 + 走滑断裂　；参考：《石油与天然气地质》2017年02期

【摘要】：塔中北斜坡志留系近几年在油气勘探上取得重大突破,但由于受多期构造运动影响,油气成藏过程复杂。通过对塔中北斜坡志留系23块样品的流体包裹体系统分析以及断裂活动特征研究,识别出研究区存在3期油充注和1期天然气充注,以海西晚期(318~245 Ma)寒武系—下奥陶统油充注和燕山期—喜马拉雅中晚期(124~25 Ma)寒武系—下奥陶统以及中-上奥陶统油气充注为主。研究区志留系在北东向张扭性走滑断裂的控制下,海西晚期虽然油充注活跃但油藏基本遭受破坏形成残留沥青,而燕山期—喜马拉雅中晚期的油气再充注决定了现今油气藏面貌。因此,塔中北斜坡应以寻找燕山期—喜马拉雅中晚期油气藏为主要勘探目标。
[Abstract]:The Silurian on the north slope of Tarim Basin has made a great breakthrough in oil and gas exploration in recent years, but the process of oil and gas accumulation is complicated due to the influence of multiple tectonic movements. Based on the analysis of fluid inclusion system and the characteristics of fault activity of 23 samples of Silurian system on the north slope of Tarim Basin, it is recognized that there are three oil filling periods and one natural gas filling stage in the study area. The Cambrian and Lower Ordovician oil charging and injection in late Hercynian and Yanshanian to the middle and late Himalayas, Cambrian-Lower Ordovician and Middle and Upper Ordovician oil and gas charging are the main ones. Under the control of the NE-trending tensional strike-slip fault in the study area, although the oil filling was active in the late Hercynian period, the reservoir was basically destroyed to form residual asphalt. The oil and gas recharge from Yanshanian to late Himalayas determines the present oil and gas reservoir. Therefore, the main exploration target of the north slope of Tarim Basin should be to search for oil and gas reservoirs in Yanshanian and late Himalayas.
【作者单位】：长江大学地球科学学院;长江大学油气资源与勘探技术教育部重点实验室;中国地质大学(武汉)资源学院;中国石油吉林油田分公司勘探开发研究院;中国石化西北油田分公司;
【基金】：油气资源与勘探技术教育部重点实验室开放基金资助项目(K2016-12)
【分类号】：P618.13

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