|
|
|
| TECTONIC EVOLUTION AND ITS INFLUENCE ON HYDROCARBON ACCUMULATION OF HESHITUOLUOGAI BASIN IN NORTHWEST XINJIANG |
| HU Yang1,2, XIA Bin1,3, GUO Feng1,2, YUAN Ya-juan1,2, SHI Qiu-hua1,2, CAI Song1,2 |
1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China;
3. School of Marine Science, Sun Yat-sen University, Guangzhou 510275, China |
|
|
|
|
Abstract The Heshituoluogai Basin is an Early Mesozoic basin in the large thrust fold belt in northwest Junggar, Xinjiang. Applying basin dynamics theory, basin-range coupling idea and balanced cross section technique, this paper shows the complete structural interpretation and resumes the tectonic evolution of the basin area. The controls and influences of the tectonic evolution on the migration and accumulation of oil and gas in the area are also analyzed and discussed. On this basis, it is concluded that: 1) The tectonic evolution in the area of Heshituoluogai Basin, closely related to the northwest Junggar Basin and Hala,alate Mountain, can be divided into prototype stage (C-T), major development stage (J-K) and reconstruction stage (E-Q); 2) The Heshituoluogai basin, with fairly good hydrocarbon source rock, many reservoir-seal assemblages, different types of traps, faults and regional unconformities, has good conditions for oil and gas migration; 3) The western basin should be the key target, where comprehensive studies on Jurassic low-mature gas and coal-formed gas could be strengthen.
|
|
Received: 30 November 2011
|
|
|
|
|
|
|
|
|
2012, Vol. 21 
