| 中上扬子地区海相油气勘探前景 |
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| 引用本文： | 陈洪德,庞林,倪新锋,郝毅.中上扬子地区海相油气勘探前景[J].石油实验地质,2007,29(1):13-18. |
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| 作者姓名： | 陈洪德 庞林 倪新锋 郝毅 |
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| 作者单位： | "油气藏地质及开发工程"国家重点实验室, 成都理工大学沉积地质研究院, 成都 610059 |
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| 摘 要： | 随着研究的深入和勘探力度的加大,中上扬子地区海相碳酸盐岩油气勘探的优势日显突出。在建立区域层序地层格架的基础上,指出区域性主力烃源岩层主要是上震旦统陡山沱组(Z2ds)(SS1-TST),-C1下部(SS3-TST),上奥陶统五峰组(O3w)及S1下部(SS7-LST,TST),中二叠统栖霞组(P2q)(SS12-TST),P3(SS13-TST),除O3w产于SS7-LST,其余主力烃源岩均形成于超层序的海侵体系域;区域性主力储集层主要包括上震旦统灯影组(Z2d)(SS2-HST),-C2,-C3(SS4-HST),C2(SS11-HST),中二叠统茅口组(P2m)(SS12-HST),上二叠统长兴组(P3ch)-T1,T2(SS13-TST,HST),通常与超层序的高水位期相一致;区域盖层的分布与区域烃源层的分布基本一致,但要比区域性烃源岩的类型丰富,其发育和分布主要形成于二级全球海平面快速上升时期。最后指出礁滩相灰岩—白云化或白云岩—古岩溶为最有利储层,古隆起+后期构造—岩性地层复合圈闭为最有利部位,川东北—鄂西地区(两边一台)及川东南—黔中—鄂西南地区(一边一台)为勘探目标优选区,川东南—黔北、鄂西—渝东地区下组合较有希望取得突破。
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| 关 键 词： | 层序地层格架 物质聚集 油气勘探 海相地层 中上扬子地区 |
| 文章编号： | 1001-6112（2007）01-0013-06 |
| 收稿时间： | 2006-10-23 |
| 修稿时间： | 2006-10-23 |
NEW BRIEF REMARKS ON HYDROCARBON PROSPECTING OF MARINE STRATA IN THE MIDDLE AND UPPER YANGTZE REGION |
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| Chen Hongde,Pang Lin,Ni Xinfeng,Hao Yi.NEW BRIEF REMARKS ON HYDROCARBON PROSPECTING OF MARINE STRATA IN THE MIDDLE AND UPPER YANGTZE REGION[J].Petroleum Geology & Experiment,2007,29(1):13-18. |
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| Authors: | Chen Hongde Pang Lin Ni Xinfeng Hao Yi |
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| Affiliation: | State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation, Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, Sichuan 610059, China |
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| Abstract: | With the development of research and exploration,the dominance of marine oil and gas exploration is overhanging in Middle and Upper Yangtze region.Based on establishment of regional sequence stratigraphic framework,it is pointed out that the regional main source rocks are Z2ds(SS1-TST),lower-C1(SS3-TST),O3w and lower S1(SS7-LST,TST),P2q(SS12-TST),P3(SS13-TST),expect that Wufeng Formation(O3w) formed in SS7-LST,others formed in the transgressive system tract of the supersequence.While the high-quality regional reservoirs would be consistent with the highstand of the supersequence,they are Z2d(SS2-HST),-C2,-C3(SS4-HST),C2(SS11-HST),P2m(SS12-HST),P3ch-T1,T2(SS13-TST,HST).The distribution of the regional cap rocks are the same as the regional main source rocks,however,their types are more abundant,and they formed at the same time of second-order sea-level rising quickly.Finally,it is suggested that reef flat limestone-dolomitized limestone/dolomite-palaeokart are the most favorable reservoirs,paleohigh late structural-lithologic strata traps are the most favorable location,and northeastern Sichuan-western Hubei area(two platform margins and one platform) and southeastern Sichuan-Middle Guizhou-western Hubei area(one platform margin and one platform) are the priority area,southeastern Sichuan-northern Guizhou and western Hubei-eastern Chongqing are the frontier where exploration breakthrough would be expected in the near future. |
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| Keywords: | sequence stratigrpahic framework material aggregation hydrocarbon prospecting marine strata Middle and Upper Yangtze region |
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