摘要
沧县隆起地区早古生代盆地原型的一级构造单元为宽城-蓟县动陷和德州隆起，晚古生代盆地原型的一级构造单元有苏桥坳陷、塘沽隆起和泊头坳陷。该地区奥陶系和石炭-二叠系有机质丰度均达到好或较好烃源岩的标准。奥陶系碳酸盐岩为以生油为主的烃源岩，石炭系煤层和泥质岩为以生气为主的烃源岩。根据中、新生代构造运动对古生代盆地的改造程度及古生代烃源岩现今所处演化阶段，可将该地区古生界划分为改造-破坏型、改造-保存型和改造-再生型3类油气远景区，分别为油气勘探不利区、较有利区和有利区。
Palaeozoic system is the main object in Cangxian uplift for explorers.The first-order structural units of the Lower Palaeozoic basin are represented by Kuancheng-Jixian depression and Dezhou uplift, with the Ordovician carbonate rocks as the hydrocarbon source rocks mainly generating oil. The first-order structural units of the Upper Palaeozoic basin are comprised of Suqiao depression, Tanggu uplift and Botou depression and the Carboniferous coal and muddy rocks are the main source rock dominatively generating gas. rused on the transformation degrees of Palaeozolc source rocks forced by the MesoCenozoic tectonic movements, and the phase at which the source rocks have evolved now, Palaeozoic of this region can be divided into three types of oil-gas potential area: the trans formed-destroyed, the transformed-preserved and the transformedregenerated. These three types are respectively the unfavorable, sub-favorable and favorable oil-gas exploration prospects.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1997年第4期8-11,共4页
Petroleum Exploration and Development
关键词
古生代
构造演化
生油层
油气资源
远景评价
Cangxian uplift, Paleozoicera, Formation, Tectonic evolution. Source bed, Distribution, Oil and gas resource, Prospective evaluation
