渤海湾叠合盆地大中型天然气田的勘探方向
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摘要
渤海湾盆地是中、新生代裂谷盆地与石炭 -二叠系残留含煤盆地的复合叠合盆地。冀中东北部、冀南、黄骅、东濮、济阳和开平等 6个中新生界覆盖下的石炭 -二叠系煤系残留盆地区 ,是石炭 -二叠系煤成烃源岩、下第三系和中生界暗色泥岩烃源岩以及奥陶系灰岩烃源岩等多源复合含油气系统 :具垒、槽相同的地质结构 ;油气资源丰富 ;纵向上具九套生储盖组合 ,平面上具特有的天然气藏序列 ;形成具“古新混生、古储、中堵”成藏模式的断裂潜山构造复式油气聚集带型油气田 ,预测通过高精度重力、磁力、电法、地震、地质综合勘探 ,进行全信息地球物理、地质综合解释、钻探后将会发现一批大中型气田。
Bohaiwan Basin is a composite basin polymerized by a Mesozoic and Cenozoic rift basin and a Carboniferous remnant coal-bearing basin .The Mesozoic-Cenozoic-covering Carboniferous-Permian remnant coal-bearing b asins such as the northeast of Jizhong,the south of Jizhong,Huanghua,Dongpu,Jiya ng and Kaiping Depressions make up of the composite multi-source oil-gas-bear ing system consisting of Carboniferous-Permian coal-formed hydrocarbon source rock,Eogene-Mesozoic dead color shale source rock and Ordovician limestone sour ce rock.This system has the geosyncline-horst alternative geological configurat ion with much resource.It has 9 sets of source-reservoir-seal assemblage verti cally and particular gas reservoir sequence horizontally.It can form the fractur e-buried hill complex oil-gas accumulation combination characterized by the pa ttern of Palaeozoicera-Cenozoic generating_Palaeozoicera-accomulating_Mesozoic sealing.After the high accuracy gravitational prospecting,magnetic exploration, electrical survey,geological & seismic integrated exploration and interpretation are carried out,a group of large and medium-sized natural gas pools may be fou nd through drlling.
Bohaiwan Basin is a composite basin polymerized by a Mesozoic and Cenozoic rift basin and a Carboniferous remnant coal-bearing basin .The Mesozoic-Cenozoic-covering Carboniferous-Permian remnant coal-bearing b asins such as the northeast of Jizhong,the south of Jizhong,Huanghua,Dongpu,Jiya ng and Kaiping Depressions make up of the composite multi-source oil-gas-bear ing system consisting of Carboniferous-Permian coal-formed hydrocarbon source rock,Eogene-Mesozoic dead color shale source rock and Ordovician limestone sour ce rock.This system has the geosyncline-horst alternative geological configurat ion with much resource.It has 9 sets of source-reservoir-seal assemblage verti cally and particular gas reservoir sequence horizontally.It can form the fractur e-buried hill complex oil-gas accumulation combination characterized by the pa ttern of Palaeozoicera-Cenozoic generating_Palaeozoicera-accomulating_Mesozoic sealing.After the high accuracy gravitational prospecting,magnetic exploration, electrical survey,geological & seismic integrated exploration and interpretation are carried out,a group of large and medium-sized natural gas pools may be fou nd through drlling.
引文
[1] 马新华,钱凯,等.中国陆上大中型气田形成的区域地质背景和科学探索井领域及目标[J].勘探家,1999:4(3):1～7.
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[3] 李明潮,梁生正,赵克敬.煤层系及勘探开发[M].北京:地质出版社,1996.
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