METHODS TO ESTIMATE FORMATION PORE PRESSURE IN WILDCAT WELL

This paper discusses the methods used to estimate formation pore pressure in the deep or ultra-deep wildcat well. A method is optimized based on the analysis to the related calculating models of covering pressure and pore pressure, and in combination with the actual drilling practice of deep well. The optimum method is established for formation pressure calculation before, while and after drilling, which makes the best use of geologic, seismic, logging, drilling, RFT and well kicks data, making the pressure calculation and analysis more systematic and more precise with each stage of drilling process.