Petroleum geologic features and exploration potentials in deep-sea fan, Bay of Bengal

Wu Yiping; Zhang Yanmin; Tian Zuoji; Li Fuheng; Wang Hongping

doi:10.11781/sysydz201301048

Volume 35 Issue 1

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Wu Yiping, Zhang Yanmin, Tian Zuoji, Li Fuheng, Wang Hongping. Petroleum geologic features and exploration potentials in deep-sea fan, Bay of Bengal[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2013, 35(1): 48-52. doi: 10.11781/sysydz201301048

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Wu Yiping, Zhang Yanmin, Tian Zuoji, Li Fuheng, Wang Hongping. Petroleum geologic features and exploration potentials in deep-sea fan, Bay of Bengal[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2013, 35(1): 48-52. doi: 10.11781/sysydz201301048

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Petroleum geologic features and exploration potentials in deep-sea fan, Bay of Bengal

doi: 10.11781/sysydz201301048

1.
Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
2. Geological Mud Logging Company of Henan Oilfield Company, SINOPEC, Nanyang, Henan 473132, China
3. Hangzhou Research Institute of Geology, PetroChina, Hangzhou, Zhejiang 310023, China

Received Date: 2012-05-22
Rev Recd Date: 2012-12-19
Publish Date: 2013-01-28

Abstract

Abstract

The deep-sea fan of the Bay of Bengal served as the main body for the LST of deep sequence. Tertiary complex sand bodies with giant thickness deposited. 5 sequence boundaries were identified. 3 sets of source rocks in the Bhuban Formation of Miocene, the Jenam Formation of Oligocene and the Kopili Formation of Eocene gave birth to hydrocarbon during the early Pleiocene (5 Ma), the end of Oligocene (29.3 Ma) and the end of Paleogene (23.3 Ma), respectively. Deepwater turbidity sandstones worked as the main reservoir, and were featured by a depositional model of multi-period vertical overlap. Oligocene-Miocene reservoir and seal assemblage was the most favorable. Vertically, faults, unconformities and continuously-distributed sand bodies provided good pathways for petroleum migration. The possible accumulation models belong to stratigraphic reservoirs of "above-generation and below-storage" or complex ones. Natural gas is the dominant product in the deep water zone of the Bay of Bengal. Therefore, the Tertiary aggradational confined channel complexes in the deep-water basin of the Bay Rim of Bengal, such as the upper-middle deep water fans of the Ganges river system and the Indian eastern sea, as well as the natural alluvial sand embankments near to "bottomless channel" in the middle-lower deep water fans are considered as the most potential zones.
- sequence boundary,
- petroleum geological characteristics,
- accumulation condition,
- petroleum exploration potential,
- deep-sea fan,
- Bay of Bengal

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References

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沈阳化工大学材料科学与工程学院沈阳 110142

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Petroleum geologic features and exploration potentials in deep-sea fan, Bay of Bengal

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Petroleum geologic features and exploration potentials in deep-sea fan, Bay of Bengal

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