桩西潜山成藏条件及油气富集规律
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摘要
针对潜山表层风化壳油藏研究较多,潜山内幕油气成藏规律研究较少状况.从油源条件、构造活动对储层发育、输导方式和封堵盖层的配置等角度研究了桩西潜山成藏条件和富集规律,孤北洼陷和桩东凹陷为其提供了丰富的油源,储层、盖层、圈闭的发育主要受控于褶皱和断裂构造,由此形成以裂缝为主的复杂圈闭组合.油气沿油源断层和褶皱-断裂-裂缝进入潜山内幕溶蚀带成藏.油气分布主要受控于裂缝发育程度,正断层尤其是油源断层对下古生界储层改造是油气运移指向区,逆断层下盘地层挠曲形成缝洞发育带可形成富集高产油藏.
Studies have been made more on the weathering crust reservoirs at the top of buried hills,but less on the law of insider hill reservoirs. In this paper,reservoir conditions and accumulation regulation of Zhuangxi buried hill were discussed from the view point of oil source,tectonic activity on the reservoir,transporting mode,and sealing cap layer. Zhuangxi buried hill has rich oil source provided by Gubei Subsag and Zhuangdong Sag. Reservoir,seal and trap were mainly controlled by folds and faults,thereby complex trap combination was formed,mainly dominated by crack. Oil and gas migrated into the inside storey of buried hill dissolution reservoirs by the way of oil source faults and fold-fracture-cracks. Oil and gas distribution was mainly controlled by the development degree of fracture. Lower Paleozoic reservoirs reconstructed by normal faults especially oil source faults were the favorable directional zones of hydrocarbon migration,and high-yielding reservoirs mainly distributed in seam cave zones formed by reverse-faults footwall strata deflection.
Studies have been made more on the weathering crust reservoirs at the top of buried hills,but less on the law of insider hill reservoirs. In this paper,reservoir conditions and accumulation regulation of Zhuangxi buried hill were discussed from the view point of oil source,tectonic activity on the reservoir,transporting mode,and sealing cap layer. Zhuangxi buried hill has rich oil source provided by Gubei Subsag and Zhuangdong Sag. Reservoir,seal and trap were mainly controlled by folds and faults,thereby complex trap combination was formed,mainly dominated by crack. Oil and gas migrated into the inside storey of buried hill dissolution reservoirs by the way of oil source faults and fold-fracture-cracks. Oil and gas distribution was mainly controlled by the development degree of fracture. Lower Paleozoic reservoirs reconstructed by normal faults especially oil source faults were the favorable directional zones of hydrocarbon migration,and high-yielding reservoirs mainly distributed in seam cave zones formed by reverse-faults footwall strata deflection.
引文
[1]李丕龙,张善文,王永诗,等.多样性潜山成因、成藏与勘探——以济阳坳陷为例[M].北京:石油工业出版社,2003:132-133.
[2]王永诗.桩西-埕岛地区下古生界潜山储集层特征及形成机制[J].岩性油气藏,2009,21(1):11-14.
[3]杨品荣,陈洁,蔡进功,等.济阳坳陷构造转型期及其石油地质意义[J].油气地质与采收率,2001,8(3):5-7.
[4]漆家福,于福生,陆克政,等.渤海湾地区中生代盆地构造概论[J].地学前缘,2003,10(S):199-206.
[5]王颖,王英民,赵锡奎.构造模拟实验在构造研究中的应用[J].石油实验地质,2004,26(3):308-312.
[6]宋国奇,徐春华,王世虎,等.胜利油区古生界地质特征及油气潜力[M].武汉:中国地质大学出版社,2000:83-89.
[7]曹高社,邢娜娜,周廷全,等.桩西潜山断裂构造的分形特征及其意义[J].河南理工大学学报:自然科学版,2011,30(3):288-293.
[8]龚洪林,潘建国,王宏斌,等.塔中地区碳酸盐岩裂缝综合预测技术及其应用[J].石油与天然气地质,2007,28(6):841-846.
[9]王学军,陈钢花,张家震,等.古潜山油藏裂缝性储层的测井评价[J].石油大学学报:自然科学版,2003,27(5):21-27,35.
[2]王永诗.桩西-埕岛地区下古生界潜山储集层特征及形成机制[J].岩性油气藏,2009,21(1):11-14.
[3]杨品荣,陈洁,蔡进功,等.济阳坳陷构造转型期及其石油地质意义[J].油气地质与采收率,2001,8(3):5-7.
[4]漆家福,于福生,陆克政,等.渤海湾地区中生代盆地构造概论[J].地学前缘,2003,10(S):199-206.
[5]王颖,王英民,赵锡奎.构造模拟实验在构造研究中的应用[J].石油实验地质,2004,26(3):308-312.
[6]宋国奇,徐春华,王世虎,等.胜利油区古生界地质特征及油气潜力[M].武汉:中国地质大学出版社,2000:83-89.
[7]曹高社,邢娜娜,周廷全,等.桩西潜山断裂构造的分形特征及其意义[J].河南理工大学学报:自然科学版,2011,30(3):288-293.
[8]龚洪林,潘建国,王宏斌,等.塔中地区碳酸盐岩裂缝综合预测技术及其应用[J].石油与天然气地质,2007,28(6):841-846.
[9]王学军,陈钢花,张家震,等.古潜山油藏裂缝性储层的测井评价[J].石油大学学报:自然科学版,2003,27(5):21-27,35.