柴达木盆地马北地区构造高点迁移及有利勘探方向
|
摘要
在对三维地震、钻井及相关地质资料分析的基础上,运用平衡地质剖面、趋势厚度法地层恢复等技术,对柴达木盆地北缘马北地区新生代构造高点的迁移规律及主要控制因素进行了深入研究,并在此基础上从油气动态成藏的视角对该区油气成藏机理进行了探讨,认为油气早期主要富集在由北东向断裂控制的古构造高点,现今油气主要分布于喜马拉雅运动晚期构造调整之后形成的构造高点,提出古、今构造高点叠合部位是油气勘探的最有利地区,建议今后该地区的油气勘探应围绕现今构造高点寻找构造油气藏,围绕古构造高点周缘寻找岩性-地层油气藏。
Based on the 3-D seismic interpretation,drilling data and related geological information analyses,by means of balanced geologic profile and trend thickness method for formation restoration,the migration of Cenozoic structural highs and main control factors in Mabei area in northern margin of Qaidam basin were studied,by which the hydrocarbon accumulation mechanism in this area in view of oil-gas dynamic accumulation is investigated.It is shown that in early stage hydrocarbon is mainly enriched in the paleo-structural highs controlled by NE trending faults,while present oil-gas distribution is located in the structural highs formed following tectonic regulations in late Himalayan movement.It is concluded that the superimposed positions of paleo and present structural highs are the most favorable areas for oil-gas exploration.The exploration targets in this area should be structural reservoirs surrounding the present structural highs and lithologic-stratigraphic reservoirs around the paleo structural highs.
Based on the 3-D seismic interpretation,drilling data and related geological information analyses,by means of balanced geologic profile and trend thickness method for formation restoration,the migration of Cenozoic structural highs and main control factors in Mabei area in northern margin of Qaidam basin were studied,by which the hydrocarbon accumulation mechanism in this area in view of oil-gas dynamic accumulation is investigated.It is shown that in early stage hydrocarbon is mainly enriched in the paleo-structural highs controlled by NE trending faults,while present oil-gas distribution is located in the structural highs formed following tectonic regulations in late Himalayan movement.It is concluded that the superimposed positions of paleo and present structural highs are the most favorable areas for oil-gas exploration.The exploration targets in this area should be structural reservoirs surrounding the present structural highs and lithologic-stratigraphic reservoirs around the paleo structural highs.
引文
[1]孟繁聪,张建新.柴北缘绿梁山早古生代花岗岩浆作用与高温变质作用的同时性[J].岩石学报,2008,24(7):1585-1 594.
[2]王亮,肖安成,杨树锋,等.柴北缘大型基底断裂—马仙断裂的构造特征研究[J].地质科学,2010,41(1):157-166.
[3]袁亚娟,吕宝凤,刘建宝,等.柴达木盆地断裂发育特征及其动力学机制探讨[J].西南石油大学学报(自然科学版),2010,32(6):46-52.
[4]汪立群,庞雄奇,党玉琪,等.柴北缘马海—大红沟凸起油气成藏模式与有利勘探目标[J].石油与天然气地质,2004,25(6):696-702.
[5]汪立群,徐凤银,庞雄奇,等.柴北缘马海—大红沟凸起油气勘探成果与柴达木盆地北缘的勘探方向[J].石油学报,2005,26(3):21-25.
[6]万传治,李红哲.柴达木盆地北缘西段油气成藏机理与有利勘探方向[J].天然气地球科学,2006,17(5):653-658.
[7]王昌桂,马立协,王文弟,等.柴达木盆地北缘侏罗系对比及含油气系统[J].新疆石油地质,2009,30(4):454-458.
[2]王亮,肖安成,杨树锋,等.柴北缘大型基底断裂—马仙断裂的构造特征研究[J].地质科学,2010,41(1):157-166.
[3]袁亚娟,吕宝凤,刘建宝,等.柴达木盆地断裂发育特征及其动力学机制探讨[J].西南石油大学学报(自然科学版),2010,32(6):46-52.
[4]汪立群,庞雄奇,党玉琪,等.柴北缘马海—大红沟凸起油气成藏模式与有利勘探目标[J].石油与天然气地质,2004,25(6):696-702.
[5]汪立群,徐凤银,庞雄奇,等.柴北缘马海—大红沟凸起油气勘探成果与柴达木盆地北缘的勘探方向[J].石油学报,2005,26(3):21-25.
[6]万传治,李红哲.柴达木盆地北缘西段油气成藏机理与有利勘探方向[J].天然气地球科学,2006,17(5):653-658.
[7]王昌桂,马立协,王文弟,等.柴达木盆地北缘侏罗系对比及含油气系统[J].新疆石油地质,2009,30(4):454-458.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心