地层溶蚀垮塌构造——苏桥潜山

Collapse Structure with Formation Dissolution:Suqiao Buried Hill

由谭试典和王冰二位地质家对重力构造的研究,提出重力侧向运动的滑动断阶、滚动背斜、掀斜断块、滑落背斜、滑覆构造、重力垂向运动的压实构造、底辟构造共7类。通过WA85—105地震剖面的解释,苏桥潜山应属地层溶蚀垮塌构造样式,这样重力构造成因类型应增加至8类为宜。苏桥潜山断块油气藏是由奥陶系自生自储的油藏,被上覆石炭-二叠系天然气所叠加,形成一典型复式油气藏。古生古储的苏桥潜山断块复式油气藏的确立,为华北古生界和中上元古界找油找气提供了实例。

By studying on the gravity structure,the geologists like Tian Shidian and Wang Bing sum up the seven types of gravity lateral movements such as slide fault terrace,rolling anticline,inclined fault block,sloughing anticline,slip and overlap structure,compacted structure and diapiric structure.Based on the interpretation for the seismic profile of WA85-105,Suqiao buried hill should belong to the collapse structure pattern with formation dissolution,making the gravity structures increase to eight types.Suqiao buried hill fault block hydrocarbon reservoir is Ordoviucian authigenetic and self-preserving oil reservoir,which is stacked by overlying Carboniferous and Permian natural gas layer and forms a typical complicated hydrocarbon reservoir.The establishment for fault block complicated hydrocarbon reservoir of Suqiao buried hill can provide an example for oil and gas finding in Palaeozoic,Mesoprotozoic and Palaeoprotozoic reservoirs in north China.