The Characteristics Of Tectonic Evolution Of Eastern Micang Mountain And Daba Mountain And Form Of Traps

Based on data of outcrop, drilling and logging, we made synthetic seismogram, and using them in seismic data interpretation. The Balanced cross section technique is used to Analyses the tectonic evolution of work area. The results recovered The Thrusting-nappe structures of North Daba mountain were formed and the first thrust . At same time , the South Daba mountain formed unconformity of the Xujiahe formation and Leikoupo formation in Triassic. Through the regional seismic data interpretation, we educed that the low Triassic gypsum divide two layers the upper layer and the low layer. The upper layer, structural stratums all engulf deformation; the low structural layer, below stratums gliding plane develop multiple imbricate fold. Under the distribution of structures, we choose three areas for fine seismic interpretation and made the structural diagram of various formations:1, The key tectonics styles of the area are compressive structures; there are Imbricate fault zone , Box anticline, Reversed anticline, fault—related fold.2, The traps are mainly anticline traps, controlled by structure .The control action of faults to traps made the full anticline traps transformed fault traps .3, The traps of the Jiepai 1 well is low-range anticline traps and fault trap .weather the fault have seal is not sure ,so the trap preserve not good,the well is the industry oil-well.4, In the middle of the area, there are a series of anticline-traps,the closure is thick ,the acreage is large ,the structure fracture develop on the trap, we propose drilling on Moziping anticline-trap.