Natural gas accumulation in eastern China

被引:42
作者
Dai, Jinxing [1 ,3 ]
Hu, Guoyi [1 ]
Ni, Yunyan [1 ]
Li, Jian [2 ]
Luo, Xia [2 ]
Yang, Chun [1 ]
Hu, Anping [3 ]
Zhou, Qinghua [1 ]
机构
[1] PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
[2] PetroChina, Res Inst Petr Explorat & Dev Langfang, Langfang 065007, Peoples R China
[3] Zhejiang Univ, Hangzhou 310027, Peoples R China
关键词
Eastern China; Natural gas; Biogenic gas; Abiogenic alkane gas; CO2; SOURCE ROCKS; CARBON; HYDROCARBONS; METHANE; ORIGIN; GEOCHEMISTRY; DEPRESSION; ISOTOPES; SYSTEMS; DEEP;
D O I
10.1260/014459809789996147
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
There are various genetic types of natural gas in eastern China, which are mainly of biogenic gas, abiogenic alkane gas and abiogenic CO2. Large biogenic gas fields discovered at present are mainly distributed in Ying-Qiong basin (Ya13-1, Ledong22-1, Dongfang1-1), Pearl River Mouth basin (Panyu30-1),Eastern China Sea basin (Chunxiao gas field) and Taixi basin (Tiezhanshan gas field) in the continental shelf, and carbon isotope of ethane is heavier than -28 parts per thousand, which shows that the gas is coal-derived. Large abiogenic alkane gas fields are distributed in the deep part of Songliao basin (Xingcheng gas field, etc), and the natural gas is characterized by heavy isotope (delta C-13(1)>-30 parts per thousand), negative carbon isotope series and R/Ra>0.5. CO2 gas fields distribute widely from Songliao basin in the north to Ying-Qiong basin in the south, and total 35 CO2 gas fields have been discovered in these areas with CO2 content more than 60% and d(13)C(CO2) heavier than -28 parts per thousand.
引用
收藏
页码:225 / 259
页数:35
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SCIENCE IN CHINA SERIES D-EARTH SCIENCES, 2008, 51 (Suppl 1) :14-35