P1: Formation Pressure Evaluation

Target Audience
  • Wellsite Geologists
  • Operations Geologists
  • Mud Loggers
  • MWD Operators
  • Directional Drillers
  • Technical & Support Staff
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.
Delegates will learn:
  • How to calculate and plot normal hydrostatic pore pressure and overburden pressure
  • About the mechanisms that generate abnormal pore pressures
  • How to calculate fracture pressure for LOT data and mathematical models
  • How to produce PPFG plots from offset well data
Course Length
3 Days
Course Fee
£1500 (+VAT)
P1: Course Outline
Pressure Concepts and Gradients
Definitions and Normal Pore Pressure
Overburden Pressure Calculations
Pressure Gradient Calculations
Fracture Pressure Estimations & Modelling
Abnormal Pressure
Causes of Abnormal Pore Pressure
Pore Pressure Estimates from:
 Dxc, ROP, Mud-Gas relationships
 Borehole Stability
Fracture Pressure & Well Planning
Evaluation of Rock Fracture Pressure:
  • Leak-Off Tests
  • Mathematical Modelling
Borehole Stability
Kick Tolerance
Well Control Procedures
Well Planning Issues
Well Planning Requirements
Safe Operating Window (PP-FG)
Pore Pressure prediction and detection
Wellbore Stability
Fracture Pressure
Health, Safety, Security, Environment
Requirements and Well Planning
Recent Incidents
Operator Responsibilities
Individuals’ Responsibility
General Duty
HP/HT Drilling: Definitions & Challenges
Definitions of HPHT
High Fluid Density
High Formation Temperature
Narrow Operating Windows
Managed Pressure Drilling
Formation Pressure Evaluation
Hydrostatic Pressures
Pressure Gradients
Elevations and Datums
Formation Balance Gradient
  • RFT data and PZ plots
Overburden Pressure Gradient
  • Data Sources
  • Calculation methods
Origin of Abnormal Pore Pressure
Compaction Disequilibrium
Aquathermal Processes
Clay Diagenesis
Stratigraphic Processes
Tectonic Processes
Fluid Expansion
Practical Formation Pore Pressure Evaluation
Seismic Data
ROP and Dxc
Formation Gas Evaluation
Borehole Behaviour
Drilling Parameters
Drill Cuttings and Cavings
Geothermal Gradients
Wireline/MWD Data
Trend Line Methods
  • Ratio
  • Eaton
  • Equivalent Depth
  • Bowers
Fracture Pressure Gradients
Leak-off Tests
Mathematical Modelling
High Angle wells
Kick Tolerance