--> Abstract: Geophysical Recognition and Characterization of One Deep Water Channel in the Northern Slope of South China Sea, by Li Li, Lv Fuliang, Guozhang Fan, Bin Wang, and Dong Yong; #90124 (2011)
[First Hit]

Datapages, Inc.Print this page

AAPG ANNUAL CONFERENCE AND EXHIBITION
Making the Next Giant Leap in Geosciences
April 10-13, 2011, Houston, Texas, USA

Geophysical Recognition and Characterization of One Deep Water Channel in the Northern Slope of South China Sea

Li Li1; Lv Fuliang1; Guozhang Fan1; Bin Wang1; Dong Yong1

(1) Petrochina Hangzhou Institute of Geology, Hangzhou, China.

Deep water channels are very important reservoir types in almost all areas where deep water sediments are explored. This talk presents a set of methods that can be used to recognize and characterize deepwater channels based on 3D seismic data on the northern slope of South China Sea. The deposition processes and lithological characteristics of the deep water channel are also discussed. Recognition and characterization of the deep water channel may provide some insight for future explorations in South China Sea.

The technique of 3D visualization is one of tools which can help us to describe and understand geological details. Through justifying and changing color, light and opacity, we can find some interesting targets, such as the deep water channel in northern slope of South China Sea. Previous HitCoherencyNext Hit is used to calculate waveform similarity within an aperture defined in space and time. The geometric shape of the channel is clearly presented on Previous HitcoherencyTop slices. The channel is sinuous and extends in SW-NW direction. There are lateral aggradations in the middle part of the channel, and a lot of mini channels in the southwest part of the channel.

The processes of the channel are analyzed based on four horizon slices. It underwent eroding, filling, laterally shifting, and then dying out gradually. Seismic amplitude and wave classification are used to predict lithology of the deep water channel. Lateral aggradations and point bars are the main sandprone parts of the channel. There might be shale in inner parts of the channel.