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| Content Provider | Springer Nature Link |
|---|---|
| Author | Li, Xianqing Feng, Songbao Xiao, Xianming Tang, Yongchun Xiao, Zhongyao Mi, Jingkui Tian, Hui Liu, Dehan Shen, Jiagui |
| Copyright Year | 2013 |
| Abstract | The Kela-2 gas field, found in the Kuqa Depression of the Tarim Basin, northwestern China, is a large-sized dry gas field (C$_{1}$/C$_{1–5}$=0.992–0.999) and characterized by ultra-high pressure (pressure factor up to 2.0–2.2). The pyrolysis experiment was carried out under isothermal gold-tube closed system, with samples collected from the Jurassic coal, Jurassic mudstone and Triassic mudstone in the Kuqa Depression. The result of gas yield showed that the Middle and Lower Jurassic source rocks have higher gas generation potential than the Triassic source rocks. The kinetic modeling of gas generation and methane carbon isotope fractionation suggested that the Kela-2 gases belong to the products of high-over mature stages and were mainly derived from the Middle and Lower Jurassic coal-bearing strata. The Triassic source rocks made a minor contribution to the Kela-2 gases. The Kela-2 gases chiefly generated from coal-bearing source rocks with R $_{o}$ values from 1.3% to 2.5%, and thus primarily accumulated after 5 Ma. |
| Starting Page | 157 |
| Ending Page | 169 |
| Page Count | 13 |
| File Format | |
| ISSN | 10009426 |
| Journal | Chinese Journal of Geochemistry |
| Volume Number | 32 |
| Issue Number | 2 |
| e-ISSN | 19930364 |
| Language | English |
| Publisher | SP Science Press |
| Publisher Date | 2013-04-19 |
| Publisher Place | Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | natural gas pyrolysis experiment gas generation kinetics carbon isotope fractionation Kela-2 gas field Geochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Geochemistry and Petrology |
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