Application of S-transformation to recognition of low-amplitude structure:An example from Lu 10-Lu 6 well area in hinterland of Junggar Basin
Online published: 2011-10-20
In the Lu10-Lu 6 well area in hinderland of Junggar Basin, the recognition of low-amplitude structure is the main task to seek lowstructural-lithologic reservoir, which is similar toLuliangOilfield. The Hutubihe Formation, one of the major reservoirs in the study area, developed braided river sand bodies, its seismic event has poor lateral continuity, and there are fewwells that unevenly distributed in this area, so it is difficult to trace horizons of low-amplitude structure precisely. The time-frequency analysis technique of S-transformation is used to establish the time-frequency response model of seismic cycle in S domain. Based on the joint calibration of two-dimensional spectrum and sedimentary cycle of single well, the isochronous sedimentary framework of the entire work area is built up. Finally, according to accurate horizon tracingwhich is controlled by the isochronous sedimentary framework, six low-amplitude structural traps are found, the total area is 221 km2, and twowells are optimized. The real drilling result proves the validity and practicability.
Key words： AVO; numerical simulation; wave equation; phase shift method
LV Shanshan , XIONG Xiaojun , HE Zhenhua . Application of S-transformation to recognition of low-amplitude structure:An example from Lu 10-Lu 6 well area in hinterland of Junggar Basin[J]. Lithologic Reservoirs, 2011 , 23(5) : 83 -86 . DOI: 10.3969/j.issn.1673-8926.2011.05.017
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