Hxrs deepwaterpro pore pressure prediction software is developed to. Pdf a method is used to obtain pore pressure in shaly sandstones based upon an acoustic model for seismic velocity versus clay content and effective. Petrospec technologies tools online pore pressure analysis software. Therefore, it is also important to know when a pore pressure estimation method should not match observed pressures. Measurement and estimation of pore pressure pge 334 reservoir geomechanics. Calibrating a pore pressure estimation method to match crestal or basal sand pressure measurements can lead to erroneous results at other depths. Overburden gradient eaton exponent normal compaction trend equation pore pressure and fracture gradient. Accounting for overpressure mechanism besides undercompaction. Permedia pore pressure software is a flexible set of tools for conducting pore pressure studies. Calibrate pp to credible information as it becomes available. Drillworks geomechanics software integrates offset well information with. Estimation of pore pressure and fracture gradient from.
Petrospec technologiess pore pressure analysis tools. Determining an appropriate porepressure estimation strategy. Pdf pore pressure estimation in reservoir rocks from seismic. This flow includes editing of the residual velocity analysis from the fastvel analysis, calibration of seismic imaging velocities to well velocities, generation of a modelbased overburden pressure volume, and subsequent estimation of pore pressure, fracture pressure, effective stress and mud weight window volumes.
A case study from an offshore basin, eastern india september 2010 conference. The wellknown eatons method and matthewskellys tools were used for the estimation of pore pressure and fracture gradient, respectively. Display of calibration data from drilling or other techlog wellbore software platform tools such as the techlog formation pressure module. Calibration tools for estimating pore pressure from seismic velocities. Pore pressure prediction using seismic velocity modeling. Techlog pore pressure prediction schlumberger software. Measurement and estimation of pore pressure youtube. Analyse the condition of the borehole through the calculation of ovalization. Monitor your drilling window in realtime with live pore pressure and fracture. Methods to determine pore pressure equivalent depth methods. With paradigm pore pressure prediction solutions, geoscientists can perform.
Pore pressure estimation is important for both exploration and drilling. Pdf estimation of pore pressure and fracture gradient in. Geologic modeling to infer the sources and mechanisms of overpressure. Pore pressure calculation methods dug insight user manual. Drillworks geomechanics software landmark solutions.
Pore pressure estimation prediction using free geopressure tools. Methodology used to derive the overburden gradient key parameter of terzaghi equation different techniques can be used according to well data available. Petrospec technologies does not warrant the accuracy of the results obtained and assumes no liability. Compute safe mud weight window using stateoftheart methods for estimating pore pressure and formation fracture gradients. Estimation of density using compaction law with depth. Estimated outputs were calibrated and validated with the. The industrys most dependable prediction of pore pressures is calculated using an. Paradigm geoscience services has global experience implementing pore pressure prediction projects, with real time analysis and updates at and away from the wellbore. Pore pressure prediction geopressure analysis software. Pore pressure prediction reduce uncertainty in pore pressure estimations.
To optimize drilling decisions and well planning in abnormal pressured areas, it is essential to carry out pore pressure predictions before. The pore pressure prediction module adds a complete workflow for interactive geopressure analysis, including prediction at wells and full 3d pressure models. The calculation of stress conditions allows finetuning of mud weights and casing. This method first assumes that there is a depth section over which the pore pressure is hydrostatic, and the sediments are normally compacted because of the systematic increase in effective stress with depth. During the exploration phase, a prediction of pore pressure can be used to evaluate exploration risk factors including the migration of formation fluids and seal integrity. One example of analysis using a trend line is the equivalent depth method illustrated in fig. Pore pressure estimation is important for both exploration and drilling projects. Estimation of pore pressure and fracture gradient from well logs.