Fine Structure Interpretation And Prediction Of Buried Hill Fracture And Cave In Guang Rao Oil Field

multi-phase of complex geologic process that causes tectonic form of complex, highly fractured development and distribution of complex. It is difficult to study the space distribution of holes and fractures with single well data, and in reservoir performance history, oil outcome has great differences, which has brought great difficulties for later exploration Development. For this, the thesis does research of Fine structure interpretation and prediction of buried hill fracture and cave.This thesis uses data from pre-stack time migration for top surface structure interpretation of buried hill, mainly with technology of variable velocity restitution, fine interpretation of layers and faults, which use section of seismic data and coherent body of the data for interpretation. In this fine structure interpretation process, the 22 new small faults are implemented, and outcome is that Guang Rao buried hill is made up by Cao Gu 125 and Guang Qi 2 Hill Zone, the whole Southwest was the construction of high-low form of the North East. For resolving lack of log data for the work area features, the study utilizes Sparse-spike Inversion method with continuity of seismic data to anticipate distribution of fracture and cave in Guang Rao buried hill. The inversion results Show fracture and cave are along the vertical development of the unconformity, the horizontal holes and fractures are mainly developed in a relatively high hill site, and the inversion results have coincidence rate of 73% with well logging information. Using the final inversion results and routine seismic attribute together with clustering method, the accuracy of the forecasts fractured is further improved to coincidence rate of 79%. The result of this thesis can offer reference for the next stage exploratory development.