The application of three-dimensional seismic spectral decomposition and semblance attribute to characterizing the deepwa
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The application of three-dimensional seismic spectral decomposition and semblance attribute to characterizing the deepwater channel depositional elements in the Taranaki Basin of New Zealand LI Quan1, WU Wei2, 3*, YU Shui1, KANG Hongquan1, TONG Liqing4, CAO Xiangyang1, LIU Xiaolong1 1 Overseas Evaluation Center, China National Offshore Oil Corporation Research Institute, Beijing 100028, China 2 Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454003, China 3 Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Economic Region, Henan
Polytechnic University, Jiaozuo 454003, China 4 Bureau of Geophysical Prospecting Offshore, China National Petroleum Corporation, Tianjin 300280, China
Received 16 July 2016; accepted 2 March 2017 ©The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg 2017
Abstract
In the past few years, three-dimensional (3-D) seismogram has become an essential tool for the interpretation of subsurface stratigraphy and depositional systems. Seismic stratigraphy in conjunction with seismic geomorphology has elevated the degree to which seismic data can facilitate geological interpretation, especially in a deepwater environment. Technologies such as time slicing and interval attribute analysis can enhance geomorphological interpretations, and, when integrated with stratigraphic analyses, can yield insights regarding distribution of seal and reservoir facies. Multiple attributes corendering can further bring out features of geological interest that other technologies may overlook. This method involves corender spectral decomposition components (SDC) with semblance attributes to describe the distribution of deepwater channel elements and the boundaries of deepwater sinuous channel. Applying this technology to four elements is observed: (1) point-bars, (2) migration of channel meander loops, (3) channel erosion/cut, and (4) avulsion. The planview expression of the deepwater channel ranges from low sinuosity to high sinuosity. Furthermore, this technology has enabled interpreters to visualize details of complex depositional elements and can be used to predict net-to-gross ratio in channel systems, which can be incorporated into borehole planning for exploration as well as development needs to improve risk management significantly. The technology is applied to the study area in an effort to illustrate the variety of interpretation technologies available to the geoscientist. Key words: deepwater channel, spectral decomposition, semblance, depositional elements, deepwater Taranaki Basin Citation: Li Quan, Wu Wei, Yu Shui, Kang Hongquan, Tong Liqing, Cao Xiangyang, Liu Xiaolong. 2017. The application of threedimensional seismic spectral decomposition and semblance attribute to characterizing the deepwater channel depositional elements in the Taranaki Basin of New Zealand. Acta Oceanologica Sinica, 36(9): 79–86, doi: 10.1007/s13131-017-1113-0
1 Introduction Over the past two decades, a wide variety of geophysical technologies have been d
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