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P1: Formation Pressure Evaluation
2023 Programme
3 Days | £2150+VAT per attendee
Course Aims
To familiarize delegates with the challenges of planning and drilling wells in a safe operating window to minimise Health and Safety Incidents and Non-Productive Time.
To provide practical instruction in pore pressure and fracture pressure prediction to produce PPFG plots.
Target Audience
Wellsite Geologists, Operations Geologists, Reservoir and Development Geologists, Drilling Engineers, Mudloggers, LWD Engineers, Directional Drillers, Support Staff.
Delegates Will Learn:
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How to calculate and plot normal hydrostatic pore pressure and overburden pressure
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About the mechanisms that generate abnormal pore pressures
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How to calculate fracture pressure from LOT data and mathematical models
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How to produce PPFG plots from offset well data
Course Outline
Introduction
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Well Planning Requirements
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Safe Operating Window (PP-FG)
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Pore Pressure prediction and detection
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Wellbore Stability
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Fracture Pressure
Pressure Concepts and Gradients
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Definitions and Normal Pore Pressure
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Overburden Pressure Calculations
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Pressure Gradient Calculations
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Fracture Pressure Estimations & Modelling
Abnormal Pressure
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Causes of Abnormal Pore Pressure
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Pore Pressure Estimates from:
Dxc, ROP, Mud-Gas relationships -
Petrophysics
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Borehole Stability
Origin of Abnormal Pore Pressure
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Compaction Disequilibrium
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Aquathermal Processes
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Clay Diagenesis
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Stratigraphic Processes
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Tectonic Processes
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Fluid Expansion
Fracture Pressure & Well Planning
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Evaluation of Rock Fracture Pressure:
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Leak-Off Tests
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Mathematical Modelling
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Borehole Stability
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Kick Tolerance
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Well Control Procedures
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Well Planning Issues
HP/HT Drilling: Definitions & Challenges
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Definitions of HPHT
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High Fluid Density
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High Formation Temperature
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Narrow Operating Windows
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Managed Pressure Drilling
Formation Pressure Evaluation
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Fundamentals
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Hydrostatic Pressures
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Pressure Gradients
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Elevations and Datums
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Formation Balance Gradient
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RFT data and PZ plots
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Overburden Pressure Gradient
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Data Sources
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Calculation methods
Practical Formation Pore Pressure Evaluation
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Seismic Data
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ROP and Dxc
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Formation Gas Evaluation
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Borehole Behaviour
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Drilling Parameters
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Drill Cuttings and Cavings
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Geothermal Gradients
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Wireline/MWD Data
Health, Safety, Security, Environment
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Requirements and Well Planning
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Recent Incidents
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Operator Responsibilities
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Individuals’ Responsibility
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General Duty
Pore Pressure Methods
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Trend Line Methods
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Ratio
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Eaton
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Equivalent Depth
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Unloading (Bowers)
Fracture Pressure Gradients
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Leak-off Tests
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Mathematical Modelling
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High Angle well
