中扬子利川—慈利走廊震旦系—下古生界油气地质特征及有利区带预测
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摘要
利川—慈利走廊大剖面主要褶皱、断裂构造变形形成于燕山—喜马拉雅期,可划分5期变形;平面上,自南东往北西,一系列近东西向—北东东向—北北东向略向北西凸出的斜歪紧闭或尖棱褶皱、宽缓褶皱、箱状褶皱及与之伴随的逆冲断层组成的褶皱—冲断构造为本区显著构造样式;垂向上,具多层次滑脱—拆离构造特征,其中发育的顺层剪切滑动面构成了油气运移的良好通道;地腹、有限的地震剖面与大地电磁测深资料表明,该区存在断弯式褶皱圈闭构造。区内震旦系—下古生界生储盖条件良好,并形成多套含油气成藏组合,具有形成一定规模工业性天然气藏的有利地质条件,且明显优于上古生界—下三叠统。综合生、储、盖、运、圈、构造等条件,预测石门—桑植复向斜带和花果坪复向斜带为区内油气勘探有利区带,勘探对象为下组合之"烃源岩(Z1d﹢∈1n)—储层(Z2∈1d)—盖层(∈1n﹢∈1s)"次级组合,主要勘探目的层为灯影组,陡山沱组可能为潜在目的层。
Main folds of Lichuan-Cili corridor section,faults deformation formed in Yanshan-Himalayan age can be divided into five deformations.Source-reservoir-cap of Sinian-Lower Paleozoic in the region is in good condition,and the formation of multiple sets containing hydrocarbon accumulation assemblages,has formed a certain scale of industrial gas reservoirs in the favorable geological conditions.It is significantly better than the Upper Paleozoic-Triassic systems.Combination of source,reserve,cap and movement,circle,construction conditions,the authors forecast Shimen-Sangzhi synclinorium and Huaguoping synclinorium are favorable zones of oil and gas exploration.Main target bed is Dengying Fm,while Doushantuo Fm is potential target bed.
Main folds of Lichuan-Cili corridor section,faults deformation formed in Yanshan-Himalayan age can be divided into five deformations.Source-reservoir-cap of Sinian-Lower Paleozoic in the region is in good condition,and the formation of multiple sets containing hydrocarbon accumulation assemblages,has formed a certain scale of industrial gas reservoirs in the favorable geological conditions.It is significantly better than the Upper Paleozoic-Triassic systems.Combination of source,reserve,cap and movement,circle,construction conditions,the authors forecast Shimen-Sangzhi synclinorium and Huaguoping synclinorium are favorable zones of oil and gas exploration.Main target bed is Dengying Fm,while Doushantuo Fm is potential target bed.
引文
[1]梅廉夫,费琪.中扬子区海相地层中油气显示及其石油地质意义[J].石油与天然气地质,1992,13(2):155-166.
[2]中石油南方油气勘探项目经理部,杭州石油地质研究所.中国南方海相油气勘探研究新进展[J].海相油气地质,1997,2(2):1-15.
[3]马力,陈焕疆,甘克文,等.中国南方大地构造和海相油气地质(上,下)[M].北京:地质出版社,2004.
[4]刘宝珺,许效松,潘杏南,等.中国南方古大陆沉积地壳演化与成矿[M].北京:科学出版社,1993.
[5]赵宗举,俞广,朱琰,等.中国南方大地构造演化及其对油气的控制[J].成都理工大学学报:自然科学版,2003,30(2):155-168.
[6]郭建华,朱美衡,刘辰生,等.湖南桑植—石门复向斜走廊剖面构造特征分析[J].大地构造与成矿学,2005,29(2):215-222.
[7]颜丹平,金哲龙,张维寰,等.川渝湘鄂薄皮构造带多层拆离滑脱系的岩石力学性质及其对构造变形样式的控制[J].地质通报,2008,27(10):1 687-1 697.
[8]汪啸风,陈孝红,张仁杰,等.长江三峡地区珍贵地质遗迹保护和太古宙—中生代多重地层划分与海平面升降变化[M].北京:地质出版社,2002.
湖北省交通规划设计院三峡翻坝公路隧道地质信息项目部,翻坝高速公路S3标季家坡隧道右洞YK14+683逸出可燃气体施工风险控制汇报材料,2009。
[2]中石油南方油气勘探项目经理部,杭州石油地质研究所.中国南方海相油气勘探研究新进展[J].海相油气地质,1997,2(2):1-15.
[3]马力,陈焕疆,甘克文,等.中国南方大地构造和海相油气地质(上,下)[M].北京:地质出版社,2004.
[4]刘宝珺,许效松,潘杏南,等.中国南方古大陆沉积地壳演化与成矿[M].北京:科学出版社,1993.
[5]赵宗举,俞广,朱琰,等.中国南方大地构造演化及其对油气的控制[J].成都理工大学学报:自然科学版,2003,30(2):155-168.
[6]郭建华,朱美衡,刘辰生,等.湖南桑植—石门复向斜走廊剖面构造特征分析[J].大地构造与成矿学,2005,29(2):215-222.
[7]颜丹平,金哲龙,张维寰,等.川渝湘鄂薄皮构造带多层拆离滑脱系的岩石力学性质及其对构造变形样式的控制[J].地质通报,2008,27(10):1 687-1 697.
[8]汪啸风,陈孝红,张仁杰,等.长江三峡地区珍贵地质遗迹保护和太古宙—中生代多重地层划分与海平面升降变化[M].北京:地质出版社,2002.
湖北省交通规划设计院三峡翻坝公路隧道地质信息项目部,翻坝高速公路S3标季家坡隧道右洞YK14+683逸出可燃气体施工风险控制汇报材料,2009。
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