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    • Class and Course
    1. NExT
    2. Petrotechnical
    3. Pore Pressure Prediction Methods

    Pore Pressure Prediction Methods

    • Skill
    • 3 Days
    • classroom1Classroom
      • Average client rating (based on 61 attendee reviews)

    A predrill estimate of formation pore pressure is a key requirement for successful exploration and drilling. During the exploration phase, knowledge of the spatial distribution of formation pressures can be used to develop fluid migration models, to study the effectiveness of seals, and to rank prospects. During the drilling phase, a pre-drill pore pressure estimate allows the appropriate mud weight to be selected and the casing program to be optimized, thus enabling safe and economic drilling. This course will cover the fundamental principles of pore pressure modeling and application to oil field problems. The basic concepts used in pore pressure prediction will be presented, and methods for estimating pore pressure using log and seismic data will be explained and discussed. The discussion will focus on deriving a calibrated pore pressure model from seismic velocities. This implies calibration with offset well data in order to derive a calibrated velocity-to-pore pressure transform. The different data types used for optimal model calibration will be presented. The rock physics basis underlying such transforms is discussed, and their application to pore pressure modelling is illustrated using several examples from the Gulf of Mexico. By understanding how the pre-drill pore pressure model is built, and what kind of calibration data is necessary, the course participant will get a sense of how to update and re-calibrate the model in real time while drilling. The following topics will be addressed: Processes responsible for abnormal pressure, Methods of pore pressure prediction and detection, Data requirements and how to deal with data gaps, Model calibration, Advantages and disadvantages of seismic and resistivity based pore pressure prediction, Real time updating and uncertainty analysis.

    Exploration and development geologists, petrophysicists, geophysicists, drilling engineers, completion engineers and reservoir engineers who need an essential understanding of the impact of pore pressure on drilling, wellbore stability, and reservoir management.

    Basic understanding of drilling, geology and geophysics.   Basic understanding of risks associated with drilling operations.

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