| 被动裂陷盆地油气分布规律及主控因素分析——以塔木察格盆地塔南坳陷为例 |
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| 引用本文： | 付晓飞,王勇,渠永红,沙威.被动裂陷盆地油气分布规律及主控因素分析——以塔木察格盆地塔南坳陷为例[J].地质科学,2011,46(4):1119-1131. |
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| 作者姓名： | 付晓飞 王勇 渠永红 沙威 |
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| 作者单位： | 1.东北石油大学CNPC断裂变形机制及控藏机理研究室 黑龙江大庆 163318；2.“非常规油气成藏与开发”省部共建国家重点实验室培育基地 黑龙江大庆 163318；3.大庆油田有限责任公司海塔指挥部 黑龙江大庆 163000 |
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| 摘 要： | 塔南凹陷为典型的被动裂陷盆地,构造演化历经了4个阶段:即被动裂陷阶段、主动裂陷阶段、断一坳转化阶段和坳陷阶段,形成两套含油气系统:即被动裂陷含油气系统和主动裂陷含油气系统,油气主要富集在被动裂陷含油气系统中.油气分布的主控因素概括为3个方面:1)是区域性盖层和长期发育的断层控制油气聚集的层位,盆地发育南一段上部和大一段...
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| 关 键 词： | 塔南坳陷 被动裂陷盆地 断—盖共控 源控 优质储层 反向断层 |
| 收稿时间： | 2011-07-30 |
The law of oil and gas distribution and mainly controlling factors of the passive rift basin:The Tanan depression of Tamuchage Basin |
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| Fu Xiaofei,Wang Yong,Qu Yonghong,Sha Wei.The law of oil and gas distribution and mainly controlling factors of the passive rift basin:The Tanan depression of Tamuchage Basin[J].Chinese Journal of Geology,2011,46(4):1119-1131. |
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| Authors: | Fu Xiaofei Wang Yong Qu Yonghong Sha Wei |
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| Institution: | 1.The Laboratory of CNPC Fault Deformation and Controlling Reservoir Mechanism，Northeast University of Petroleum，Daqing，Heilongjiang 163318； 2.The Major Country Laboratory Cultivating Basement of “The Formation and Development of Unconventional Oil and Gas Reservoir” Founded by the Province Department，Daqing， Heilongjiang 163318； 3.Haita Department of Daqing Oilfield Co Ltd Daqing，Heilongjiang 163000 |
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| Abstract: | Tanan depression is a typical passive rift basin，and has four tectonic evolution stages：passive rift stage，active rift stage，fault depression conversion stage and depression stage，as well as two petroleum systems：the passive rift petroleum system which oil and gas mainly occur and active rift petroleum system.The major controlling factors of oil and gas distribution have three aspects.First of all，the regional cover and long term development of fault control the layer of oil and gas accumulation.The Basin has two mudstone regional covers: Nan 1 section and Da 1 section，which has high thickness and mud ratio，controlling the oil and gas accumulation of two petroleum systems.The long term development of fault forms shale smear of shearing type at the cover.When the SSF is greater than 5，shale smear losts the continuity and oil and gas which through the regional cover occur vertical migration，accumulating at Da 2 section，as well as forming secondary reservoir.Second，the effective hydrocarbon kitchen and good reservoir control the scale of oil and gas distribution，while active and passive rift stage both develop a set of hydrocarbon source rock.The passive rift stage of hydrocarbon source rock has interbedded sand and mud structure，so the expulsion efficiency of hydrocarbon is high，which is high quality source rock.The role of atmospheric water washout filter and organic acid dissolution is that forms a high quality reservoir，respectively，at the footwall of antithetic fault and trough，so oil and gas occur a short distance lateral migration.Oil and gas distribution has typical characteristics，such as “source control” and “high quality reservoir control”.The third is the antithetic fault，the lower uplift and the fan complex control the gas accumulation.There are many antithetic faults resulting from the tectonic subsidence and the tilting at the stage of passive rifting，and they have the advantages as “three phases the synchronous product resevoir”,”three aspects compose the play” and“three types compoundly control the gas”are favour of forming the reservoir，so they are the typical reservoir model for the passive rift basin.The passive rift stage resut in the bottom wall of the antithetic fault low upward，the initiative rift stage result in the central anticlinal zone，and the reversion stage of the basin result in the reverse structure zone，and they provide place for two different hydrocarbon and secondary gas system to accumulate gas respectively.The onshore subsea apron accumulate gas in the central of depression，and formed the lithologic hydrocarbon reservoirs. |
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| Keywords: | Tanan depression The passive rift basin The controlling effect of rift cover Source control High quality reservoir Antithetic fault |
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