A Study of Identification Marks of Sequence Boundary of GaoTaizi Reservoir in Qijia Area
According to the high resolution sequence stratigraphy’s theory[1] and the information of rock-mineral analysis, geophysics data, biological stratigraphy and geochemistry, this paper made a systematical and in-depth research on sequence boundary identification marks of Gaotaizi reservoir of Qijia area in songliao basin. We use core identification, logging curve, paleontology, heavy mineral analysis and seismic prospecting data to explain how to find the sequence boundary. And there are two types of boundary were recognised on G3,G4 oil layer group of Qijia area, which are used to be the basis to make G3,G4 into 5 parts, one is the transition surface of deltaic plain and shallow lake, the other is the top of ascending order of delta front.