石油与天然气地质 ›› 1983, Vol. 4 ›› Issue (1): 34-44.doi: 10.11743/ogg19830102

• 论文 • 上一篇    下一篇

华北地台石炭二叠系煤成气赋存地质条件及其勘探前景

蔡乾忠   

  1. 地质矿产部第二石油普查勘探指挥部
  • 收稿日期:1982-05-10 出版日期:1983-03-25 发布日期:2012-01-16

GEOLOGICAL CONDITIONS OF PERMO-CARBONIFEROUS COAL-FORMED GAS IN NORTH-CHINA PLATFORM AND ITS PROSPECTS

Cai Qianzhong   

  1. The 2nd Headquarters of Petroleum Prospecting and Exploration, Ministry of Geology and Mineral Resources
  • Received:1982-05-10 Online:1983-03-25 Published:2012-01-16

摘要:

华北地台西起贺兰山、六盘山,北界阴山,南界秦岭、大别山,东至郯庐断裂,总面积约80万平方公里。从中奥陶世海侵结束之后,加里东运动使地台整体抬升,缺失上奥陶1)一下石炭统沉积。中晚石炭世出现间断海侵,沉积了海陆交互相含煤建造,继又沉积了二叠系陆相碎屑岩含煤建造,从而形成了多层系的大型聚煤盆地,有利于寻找煤成气。

Abstract:

Permo-Carboniferous system in North-Chjna platform is rich in coal,and has formed three enriched zones,the ages of which are getting younger. from north to south (fig.1). After Permian,the platform was activated and dismembered. The west part (Ordos) was depressed,the middle part (Shanxi plateau) uplifted and the east(the North-China plain) block-faulted. The coal beds underwent recoalification and formed a large amount of coal-formed gas as were deeply buried by Meso-Cenozoic sediments. It is observed that the coals in this platform are mainly cocking coal and anthracites,the major component of the gas is methane. Its potential reserve is up to 6?1012cu.m. with Ordos and the North-China plain to be the most favourable regions for gas prospecting. Three types of gas pools discovcred are also discussed in this paper: the water-sealed hysterogenitic gas pool (Yangquan Coalfield),the salt-sealed secondary gas pool(Wenliu Gasfield) and the argillaceous rock-sealed primary gas pool(Liujiazhuang Gasfield).