Sedimentary characteristics and exploration potential of Neogene submarine fan in the deepwater area of the Qiongdongnan Basin

Zuo Qianmei; Zhang Daojun; Wang Yahui; Li Wei; Chen Yang; He Xiaohu; Dang Yayun

doi:10.3969/j.issn.0253-4193.2016.11.010

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Zuo Qianmei, Zhang Daojun, Wang Yahui, Li Wei, Chen Yang, He Xiaohu, Dang Yayun. Sedimentary characteristics and exploration potential of Neogene submarine fan in the deepwater area of the Qiongdongnan Basin[J]. Haiyang Xuebao, 2016, 38(11): 105-116. doi: 10.3969/j.issn.0253-4193.2016.11.010

Citation:

Zuo Qianmei, Zhang Daojun, Wang Yahui, Li Wei, Chen Yang, He Xiaohu, Dang Yayun. Sedimentary characteristics and exploration potential of Neogene submarine fan in the deepwater area of the Qiongdongnan Basin[J]. Haiyang Xuebao, 2016, 38(11): 105-116. doi: 10.3969/j.issn.0253-4193.2016.11.010

Citation:

Zuo Qianmei, Zhang Daojun, Wang Yahui, Li Wei, Chen Yang, He Xiaohu, Dang Yayun. Sedimentary characteristics and exploration potential of Neogene submarine fan in the deepwater area of the Qiongdongnan Basin[J]. Haiyang Xuebao, 2016, 38(11): 105-116. doi: 10.3969/j.issn.0253-4193.2016.11.010

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Sedimentary characteristics and exploration potential of Neogene submarine fan in the deepwater area of the Qiongdongnan Basin

doi: 10.3969/j.issn.0253-4193.2016.11.010

Zhanjiang Branch of CNOOC Ltd., Zhanjiang 524057, China

Received Date: 2016-04-20
Rev Recd Date: 2016-07-15

Abstract

Abstract

The sedimentary characteristics of Neogene submarine fan in deep-water area of Qiongdongnan Basin was studied through integrated utilization of drilling, well core, slice and laboratory test data. The results show that these submarine fans were formed by transportation of sandy slumps, which featured multi-period. The lithology and physical properties of the submarine fans vary significantly under the control of different sediment sources. The sedimentary structures show characteristics of sandy slump, debris flow, turbidity currentand deep-water underflow alternations. Seismic reflecting amplitudeand frequency reflect changes of sedimentary microfacies, sandstone thickness, sand-shale ratio and sand-shale spatial distributions. Using new 3D seismic data collected in deep-water area, the spatial distribution of submarine fans are depicted by techniques of fine well-seismic calibration, multi attribute, slice and 3D sand hollow. It was found that these submarine fans, stacked vertically and laterally, were cut by muddy channels latterly to form several lithological traps. In conclusion, the submarine fans is with huge exploration potential forming large scalelithological gas reservoirs based on its fine hydrocarbon source rock, good reservoir-cap combination and traps.
- Qiongdongnan Basin,
- deep water area,
- Neogene,
- submarine fan,
- sedimentary characteristics,
- exploration potential

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References(19)

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