Research and application of pre-drilling seismic pressure prediction in deep strata
High precision pre-drilling pressure prediction is one of the key technologies in the integration of seismic-geology-engineering.In response to the difficulty of predicting pre-drilling pressure in a certain work area of deep strata,quantitative identification of the cause of overpressure is achieved through methods such as well logging curve combination and Bowers method.Through comparative analysis of tomographic modeling velocity and pre-stack inversion velocity,it is confirmed that the accuracy of pre-stack inversion velocity meets the requirements of pressure prediction in the study area.Practical applications have shown that pre-drilling pressure prediction based on 3D seismic data accurately characterizes the overpressure characteristics of the study area,and can provide guidance for subsequent drilling engineering design and risk assessment.
Mechanism of overpressure formationEaton methodPressure prediction modelPre-drilling prediction
NETL
NSTL
万方数据
