Main Factors Controlling Carbonate Reservoir Formation: Case study of Tazhong block III, Tarim Basin
doi: 10.14027/j.issn.1000-0550.2018.176
Funds:
National Science and Technology Major Project, No. 2016ZX05004-003
- Received Date: 2018-03-27
- Rev Recd Date: 2018-12-11
- Publish Date: 2019-08-10
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Key words:
- high-energy facies /
- fractured zone /
- paleostructures /
- reservoir forming /
- carbonate rock /
- Tarim Basin
Abstract: Carbonate rock is the major target horizon for Paleogene oil/gas exploration in the Tazhong area of the Tarim Basin. Study of the major factors controlling reservoir formation plays an important role in carbonate explora-tion. The complexity of reservoir forming in Tazhong block Ⅲ has restricted exploration,so analysis of carbonate res-ervoir deposition and later re-formation was carried out in terms of tectonic evolution to confirm that the high-energy facies controlled by faulted uplifting was the material basis for karstification. High-energy shoals and inner platform gentle shoals are widely developed in Tazhong block Ⅲ. The feather-shaped fractured zone and echelon faults in the NE strike-slip fault system are favorable areas for reservoir development. The paleostructures in the crucial period of hydrocarbon accumulation controlled the migration pathway for Paleogene oil/gas migration from north to south in Ta-zhong block Ⅲ,where a nose-like structure is most favorable for oil/gas migration and accumulation. Based on the above work,a comprehensive evaluation of reservoir formation was carried out based on regional seal distribution, reservoir prediction and existing drilling records, to direct future exploration.
| Citation: | SUN Dong, PAN JianGuo, HU ZaiYuan, YANG LiSha, ZHOU JunFeng, HAN Jie, LI Chuang, FANG QiFei. Main Factors Controlling Carbonate Reservoir Formation: Case study of Tazhong block III, Tarim Basin[J]. Acta Sedimentologica Sinica, 2019, 37(4): 868-877. doi: 10.14027/j.issn.1000-0550.2018.176
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