| 中国南方古生界-中生界油气藏成藏规律及勘探方向 |
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| 引用本文： | 赵宗举,朱琰,徐云俊.中国南方古生界-中生界油气藏成藏规律及勘探方向[J].地质学报,2004,78(5):710-720. |
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| 作者姓名： | 赵宗举 朱琰 徐云俊 |
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| 作者单位： | 1. 中国石油勘探开发研究院杭州地质研究所,310023
2. 浙江大学地球科学系,杭州,310027 |
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| 基金项目： | 中国石油天然气集团公司“九五”油气勘探科技工程项目 (编号 970 2 0 5 )的资助成果 |
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| 摘 要： | 中国南方古生界—中生界古油藏主要分布于黔中—雪峰 -江南隆起北侧 (以下古生界及上震旦统灯影组古油藏为主 ,其烃源主要是下寒武统 )及南盘江—十万大山地区上古生界及下三叠统台地及孤立台地边缘 (主要是上古生界及下三叠统自生自储型古油藏 ) ;现存古生界—中生界油气藏主要分布于四川盆地。根据南方多期构造改造及油气演化复杂性的特点 ,将南方古生界—中生界油气藏分成原生、次生及再生烃油气藏 3类。认为南方现存的古生界—中生界原生油气藏很少 ,绝大部分原生油气藏均已破坏成为古油藏 ,四川盆地现存的大多数油气藏是典型的次生油气藏。提出次生气藏有利勘探领域有川东南及大巴山前缘上石炭统—下三叠统、乐山 -龙女寺隆起东南斜坡上震旦统灯影组及下古生界、川西北地区及楚雄盆地北部凹陷上三叠统—下侏罗统煤成气藏 ,再生烃油气藏有利勘探地区有苏北盆地阜宁—盐城—海安—兴化—宝应地区、江汉盆地沉湖地区南部潜江—仙桃—牌州—汊参 1井地区及江西鄱阳盆地南部凹陷。这一认识已经得到苏北盆地盐城凹陷朱家墩气田、川东方斗山背斜带寨沟湾石炭系气田及江汉盆地沉湖地区南部开先台西油藏勘探发现的证实。
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| 关 键 词： | 油气藏 原生油气藏 次生油气藏 再生烃 古生界—中生界 中国南方 |
| 修稿时间： | 7/9/2004 12:00:00 AM |
Formation Rules and Prediction of Exploration Targets of Paleozoic--Mesozoic Oil-Gas Reservoirs in Southern China |
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| ZHAO Zongju ,ZHU Yan ,XU Yunjun Hangzhou Institute of Petroleum Geology,Hangzhou,Zhejiang,.Formation Rules and Prediction of Exploration Targets of Paleozoic--Mesozoic Oil-Gas Reservoirs in Southern China[J].Acta Geologica Sinica,2004,78(5):710-720. |
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| Authors: | ZHAO Zongju ZHU Yan XU Yunjun Hangzhou Institute of Petroleum Geology Hangzhou Zhejiang |
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| Institution: | ZHAO Zongju ,ZHU Yan ,XU Yunjun Hangzhou Institute of Petroleum Geology,Hangzhou,Zhejiang, Department of Geoscience,Zhejiang University,Hangzhou,Zhejiang |
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| Abstract: | Paleozoic-Mesozoic reservoirs (oil-gas fields) in southern China are chiefly distributed at the northern margin of the central Guizhou-Xuefeng-Jiangnan uplift (mainly reservoirs of the lower Paleozoic and Sinian Dengying Formation, whose source rock is of the Lower Cambrian) and the Upper Paleozoic and Lower Triassic platform and isolated platform margins in the Nanpanjiang-Shiwandashan area (mainly Upper Paleozoic and Lower Triassic reservoirs, whose hydrocarbon came from themselves). The existent Paleozoic-Mesozoic oil-gas fields are chiefly distributed in the Sichuan basin. In view of the multi-phase tectonic transformation and complicated hydrocarbon evolution in southern China, we try to classify the Paleozoic-Mesozoic oil-gas fields into three types, i.e. primary, secondary and regenerated-hydrocarbon oil-gas reservoirs. There are very few Paleozoic-Mesozoic primary oil-gas reservoirs in southern China, and most primary reservoirs had already been destroyed into fossil pools. Most existent reservoirs in the Sichuan basin are typical secondary gas fields. The perspective exploration regions of the secondary gas fields are the Upper Carboniferous to Lower Triassic areas in the southeastern Sichuan basin and southern margin of the Dabashan Mountains, Sinian Dengying Formation and Lower Paleozoic areas on the southeastern slope of the Leshan-Longnushi uplift, the Upper Triassic and Lower Jurassic coal-related gas fields in the northwestern Sichuan basin and the northern depression of the Chuxiong basin. The perspective exploration areas of regenerated-hydrocarbon oil-gas fields are the Funing-Yancheng-Haian-Xinhua-Baoying area in the northern Jiangsu basin, Qianjiang-Xiantao-Paizhou-Well Chacan-1 area in the southern Jianghan basin, southern sag of the Poyang basin in Jiangxi. This conclusion has been already approved by the discovery of the Zhujiadun gas field in the Yancheng sag of the northern Jiangsu basin, Zhaigouwan Carboniferous gas field at the Fangdoushan anticline belt in the eastern Sichuan basin and the Kaixiantaixi oil reservoir in the southern Jianghan basin. |
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| Keywords: | oil-gas reservoirs primary oil-gas reservoirs secondary oil-gas reservoirs regenerated-hydrocarbons Paleozoic-Mesozoic southern China |
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