Gas Sources and Mixing Ratio of Ordovician Weathering Crust Reservoir of Central Gas Field in Ordos Basin

Xia Xinyu; Zhao Lin; Dai Jinxing; Zhang Wenzheng; Li Jianfeng

According to the distribution of the carbon isotopic composition data of over 140 gas samples in dif-ferent places and different beds in Ordos basin, natural gas in the Ordovician weathering crust is more close to the Carbo niferous-Permian coal-typed gas rather than to the Ordovician oil-typed gas represent-ed by the gas in the reservoir under the weathering crust. Plenary distribution of methane carbon isotopic composition of weathering crust gas has a similar feature with that of Carboniferous-Permian gas. Calcu-lation result shows that over 70% of the gas in weathering crust in the Central gas field is from Car-boniferous-Permian beds.

1. Research Institute of Petroleum Exploration and Development, Beijing 100083;

2. Changqing Research Institute of Exploration and Development, Qingyang Gansu 745101

Received Date: 1997-12-24

Rev Recd Date: 1998-03-06

Publish Date: 1998-12-10

Key words:

Abstract: According to the distribution of the carbon isotopic composition data of over 140 gas samples in dif-ferent places and different beds in Ordos basin, natural gas in the Ordovician weathering crust is more close to the Carbo niferous-Permian coal-typed gas rather than to the Ordovician oil-typed gas represent-ed by the gas in the reservoir under the weathering crust. Plenary distribution of methane carbon isotopic composition of weathering crust gas has a similar feature with that of Carboniferous-Permian gas. Calcu-lation result shows that over 70% of the gas in weathering crust in the Central gas field is from Car-boniferous-Permian beds.

HTML

Reference (9)

[1]	.戴金量, 宋岩, 张厚福等. 中国天然气的聚集区带. 北京: 科学出版社, 1997. 57～67
[2]	.徐永昌. 天然气成因理论及应用. 北京: 科学出版社, 1994. 185
[3]	.陈安定. 陕甘宁盆地中部气田奥陶系天然气的成因及运移. 石油学报, 1994, 15(2): 1～10
[4]	.黄第藩, 熊传武, 杨俊杰等. 鄂尔多斯盆地中部气田气源判识和天然气成因类型. 天然气工业, 1996, 16(6): 1～5
[5]	.关德师, 张文正, 裴戈. 鄂尔多斯盆地中部气田奥陶系产层的油气源. 石油与天然气地质, 1993, 14(3): 191～199
[6]	.张士亚. 鄂尔多斯盆地天然气气源及其勘探方向. 天然气工业, 1994, 14(3): 1～4
[7]	.戴金星, 裴锡古, 戚厚发主编. 中国天然气地质学 (卷二). 北京: 石油工业出版社, 1996. 32～33
[8]	.张义纲, 章复康, 郑朝阳. 识别天然气的碳同位素方法. 见: 有机地球化学论文集, 北京: 地质出版社, 1987
[9]	.杨俊杰, 裴锡古. 中国天然气地质学 (卷四). 北京: 石油工业出版社, 1996. 111

Gas Sources and Mixing Ratio of Ordovician Weathering Crust Reservoir of Central Gas Field in Ordos Basin

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related