Abstract:

:Submarine channels are important components of continental slope. Great attentions are attached to deep water channel reservoirs. Based on the high resolution 3D seismic data, seismic attribute and SpecDecomp are used to study the architecture, genesis and process of the Quaternary submarine channels in Muni basin. There are three main conclusions:(1)Model of sedimentary architecture in sinuous submarine channels are built in this paper. Submarine channels are composed of channel and levee. Channels can be divided into two parts by levee crest: inner levee and outer levee. Channel fills are consisted of the coarse lag, hemipelagic mud drape deposits and slide.(2)The evolution process of submarine channel has been summaried. In the early stage, submarine channel is characterized by low sinuous channel, and in the later stage, by high sinuousity.(3)Lithofacies models of sinuous submarine channel are established in this paper. Sinuous submarine channels are composed of migration channel and aggradation channel. Along gravity flow channel, the inner concave is mainly  sedimentation while the outer gives priority to erosion process. Coarse channellag deposits are characterized by aggradation. Lithofacies model of sinuous submarine channel is an important theoretical significant for accurate  reservoir prediction of deepwater turbidity.

Key words: sinuous submarine channel, architecture, sedimentary process, lithofacies model, Muni basin