辽河冷家—雷家地区深层油气成藏条件研究
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摘要
冷家—雷家地区沙三段以下的深层勘探程度非常低。文章在精细地震构造解释和沉积学研究的基础上,利用该区与邻区的现有资料,对深层油气藏的形成条件进行了分析和研究。结果表明,冷家—雷家地区北东向的主干断层控制了区域构造与沉积格局,影响了油气的运移和聚集;深部层系的石油地质条件十分优越。在陈家洼陷发育有沙四段和沙三段2套优质烃源岩,有机质生烃强度大于500×104t/km2,为周边地区提供了丰富的油源;沙三下亚段、沙四段、中生界和太古宇都具有良好的储集岩;沙三中亚段发育良好的区域盖层;深层的圈闭成因多样,油气运聚条件有利,勘探潜力巨大。但该区油气藏形成的影响因素比较复杂,油气藏多为复合型,应该以潜山、岩性油气藏作为下一步的主要勘探目标。
The degree of exploration in deep zones belowthe third member of Shahejie Formation in Lengjia-Leijia area is low.Based on the fine seismic structural interpretation and sedimentology study,the available data from the study area and adjacent areas are used to analyze the formation conditions of the deep reservoirs.The result shows that the NE main fault controls the regional structure and depositional patterns in Lengjia-Leijia area,which affects the oil and gas migration and accumulation,and the oil geological condition in the deep strata is favorable.There developed two sets of high quality source rocks in the third and fourth members of Shahejie Formation in Chenjia sub-depression,with an organic hydrocarbon generation intensity greater than 500×104 t/km2,which provides abundant oil sources for the surrounding areas.Favorable reservoir rocks exist in the forth member and lower third member of Shahejie Formation,Mesozoic and Archean,and good regional seals developed well in the middle section of the third member of Shahejie Formation.There are various traps,favorable oil and gas migration and accumulation conditions and great exploration potential.However,the factors affecting the reservoir formation are complex and there exist compound reservoirs.It is suggested that the next promisingexploration targets should be primarilycentered on the hill and lithologic reservoirs.
The degree of exploration in deep zones belowthe third member of Shahejie Formation in Lengjia-Leijia area is low.Based on the fine seismic structural interpretation and sedimentology study,the available data from the study area and adjacent areas are used to analyze the formation conditions of the deep reservoirs.The result shows that the NE main fault controls the regional structure and depositional patterns in Lengjia-Leijia area,which affects the oil and gas migration and accumulation,and the oil geological condition in the deep strata is favorable.There developed two sets of high quality source rocks in the third and fourth members of Shahejie Formation in Chenjia sub-depression,with an organic hydrocarbon generation intensity greater than 500×104 t/km2,which provides abundant oil sources for the surrounding areas.Favorable reservoir rocks exist in the forth member and lower third member of Shahejie Formation,Mesozoic and Archean,and good regional seals developed well in the middle section of the third member of Shahejie Formation.There are various traps,favorable oil and gas migration and accumulation conditions and great exploration potential.However,the factors affecting the reservoir formation are complex and there exist compound reservoirs.It is suggested that the next promisingexploration targets should be primarilycentered on the hill and lithologic reservoirs.
引文
[1]陈振岩,陈永成,仇劲涛,等.辽河盆地新生代断裂与油气关系[J].石油实验地质,2002,40(5):407-412.
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[5]于兴河,张道建,郜建军,等.辽河油田东、西部凹陷深层沙河街组沉积相模式[J].古地理学报,1999,1(3):40-49.
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[8]孙洪斌,张凤莲.断陷盆地优质储层的成因——以辽河坳陷古近系沙河街组储层为例[J].岩性油气藏,2009,21(1):51-54.
[9]张春明,梅博文,金迪威,等.辽河坳陷冷东地区油气的聚集与混合[J].石油勘探与开发,1997,24(3):24-28.
[10]赵红静,何保田,尹太举,等.以中性含氮化合物的分馏作用确定低熟油运移路径[J].断块油气田,2006,13(4):18-20.
[11]鞠俊成.辽河西部凹陷南部中生界成藏条件及勘探方向[J].石油天然气学报,2007,29(3):169-172.
[12]王玉青,宋景明,孟卫工,等.辽河坳陷兴隆台—马圈子潜山带综合地质解释效果分析[J].中国石油勘探,2007,12(4):19-23.
[13]张凤奇,庞雄奇,冷济高.辽河西部凹陷岩性圈闭含油性定量预测模型[J].岩性油气藏,2008,20(2):114-118.
[14]谢武仁,牛嘉玉,王洪亮,等.辽河西斜坡鸳鸯沟地区岩性油气藏研究[J].岩性油气藏,2008,20(4):75-79.
[15]郭永强,刘洛夫.辽河西部凹陷沙三段岩性油气藏主控因素研究[J].岩性油气藏,2009,21(2):19-23.
[16]郑荣才,胡诚,董霞.辽西凹陷古潜山内幕结构与成藏条件分析[J].岩性油气藏,2009,21(4):10-18.
[17]李富恒,邹才能,侯连华,等.地层油气藏形成机制与分布规律研究综述[J].岩性油气藏,2009,21(4):32-36.
[2]孙洪斌,张凤莲.辽河坳陷古近系构造-沉积演化特征[J].岩性油气藏,2008,20(2):60-65.
[3]孟卫工,陈振岩,赵会民.辽河西部凹陷曙光—雷家地区隐蔽油气藏主控因素及分布规律[J].中国石油勘探,2010,15(3):1-7.
[4]李明刚,漆家福,童亨茂,等.辽河西部凹陷新生代断裂构造特征与油气成藏[J].石油勘探与开发,2010,37(3):281-288.
[5]于兴河,张道建,郜建军,等.辽河油田东、西部凹陷深层沙河街组沉积相模式[J].古地理学报,1999,1(3):40-49.
[6]孙洪斌,张凤莲.辽河断陷西部凹陷古近系砂岩储层[J].古地理学报,2002,4(3):83-92.
[7]赖生华,麻建明.辽河盆地冷家油田沙河街组三段储层岩相古地理[J].沉积与特提斯地质,2005,25(3):46-51.
[8]孙洪斌,张凤莲.断陷盆地优质储层的成因——以辽河坳陷古近系沙河街组储层为例[J].岩性油气藏,2009,21(1):51-54.
[9]张春明,梅博文,金迪威,等.辽河坳陷冷东地区油气的聚集与混合[J].石油勘探与开发,1997,24(3):24-28.
[10]赵红静,何保田,尹太举,等.以中性含氮化合物的分馏作用确定低熟油运移路径[J].断块油气田,2006,13(4):18-20.
[11]鞠俊成.辽河西部凹陷南部中生界成藏条件及勘探方向[J].石油天然气学报,2007,29(3):169-172.
[12]王玉青,宋景明,孟卫工,等.辽河坳陷兴隆台—马圈子潜山带综合地质解释效果分析[J].中国石油勘探,2007,12(4):19-23.
[13]张凤奇,庞雄奇,冷济高.辽河西部凹陷岩性圈闭含油性定量预测模型[J].岩性油气藏,2008,20(2):114-118.
[14]谢武仁,牛嘉玉,王洪亮,等.辽河西斜坡鸳鸯沟地区岩性油气藏研究[J].岩性油气藏,2008,20(4):75-79.
[15]郭永强,刘洛夫.辽河西部凹陷沙三段岩性油气藏主控因素研究[J].岩性油气藏,2009,21(2):19-23.
[16]郑荣才,胡诚,董霞.辽西凹陷古潜山内幕结构与成藏条件分析[J].岩性油气藏,2009,21(4):10-18.
[17]李富恒,邹才能,侯连华,等.地层油气藏形成机制与分布规律研究综述[J].岩性油气藏,2009,21(4):32-36.
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