Identification of Fault by Integration of Well and Seismic Data and Its Applications—Taking T19 Block Oilfield as the Example

Abstract

Only relying on well logging data to describe fault and reservoir characteristics has certain limitations, especially in terms of fault-point combination, well faults length, position of seismic sections, and inter-well sand continuity. Further research is needed, we adopts the stratigraphic correlation by well-seismic combination, 3D visualization, Many means of fault classification identification which describe integration technology, formed the fine structure interpretation method which integrated technology of the first big to small, first simple to complex, slice confirm fault strike, seismic section ensure fault dip, common fixed fault attitude. Through well with technology to develop tectonic reunderstanding seismic reservoir, we find fault nearby and crosswell sand and the potential of outside enlarge transitional. It’s important to improve the fine remaining oil description for further increasing knowledge of reservoir and of high water-cut oilfields. So technology of multi-window dip scanning, constructing guided filtering and various geometric seismic attributes, the recognition accuracy of small faults is improved. The fast fault interpretation method is adopted to improve the seismic interpretation efficiency by more than 5–10 times. This will be of great importance in looking for extension potential of interwell channel, transition zone and near faults, further deepen the fine reservoir description of high water cut oilfield.