Strategy of Hydrocarbon Exploration in the Petroleum System of the Northern Qa idam Basin
- Received Date: 2004-05-09
- Rev Recd Date: 2004-07-10
- Publish Date: 2005-03-10
-
Key words:
- petroleum system /
- hydrocarbon exploration /
- northern Qaidam basin
Abstract: Lower-Middle fresh lacustrine shale and coalmeasures with huge thickness have been found in the petroleum system of the northern Qaidam basin. These source rocks are characterized by high abundance of organic matter with mainly type Ⅱ-Ⅲ. The major oil and gas generation stage of the Jurassic source rocks is between theMiddle-Late episodes of the HimalayaMovement ( E3 -2N1 ). At that time, the existingMesozoic paleo-up lifts and the Cenozic folds and faults, which served as oilmigration routes and traps, greatly promoted the oil reservoir formation. In addition, multiple reservoir-cap compositions are confirmed in both the Jurassic and Tertiary strata. The estimated reserves of oil and gas are up to 1 billion ton of oil equivalent in the studied area. However, only about 3% of them have been found so far. Great potential for further hydrocarbon exp loration remains in this area. Three p referential targets for future hydrocarbon exp loration are selected, i. e. Lenghu No. 1 to No. 5 Trap, Nanbaxian2Dahonggou paleo up lift and the front of Saishiteng mountain
| Citation: | ZHANG Min, YIN Cheng-ming, CHEN Yan. Strategy of Hydrocarbon Exploration in the Petroleum System of the Northern Qa idam Basin[J]. Acta Sedimentologica Sinica, 2005, 23(1): 143-149.
|
DownLoad: