Subsurface Pressures for Injection of Fluids and Gases

GeoLogica Limited
Course summary
17.5 hours
875 GBP excl. VAT
Full time
Online courses
Next available date: 06/12/2021 - Online courses
Professional Training

Course description

Subsurface Pressures for Injection of Fluids and Gases

This course covers all aspects of subsurface pressures with particular emphasis on pre-drill estimates, as well as the conditions for injection and storage of fluids and gas, including hydrogen and CO2. Methods to estimating pressures from rock and fluid properties, along with the processes which determine them in the subsurface prior to drilling, will be reviewed. Using existing data for calibration of these estimates will be assessed. The impact of rock strength relative to fluid pressure at depth will also be discussed, in relation to injection rate limitations and storage volumes.

Suitability - Who should attend?

Intended for geoscientists and engineers who are involved in drilling into reservoirs for the purpose of injecting, storing and producing fluid. Some knowledge of subsurface geology and the basics of drilling wells would be an advantage.

Outcome / Qualification etc.

  • Understand how subsurface pressures determine safe injection, storage and production from deep reservoirs.
  • Appreciate the processes which govern safe drilling with particular emphasis on pore fluid and fracture pressures.
  • Describe how to analyze subsurface pressure data and calibrate to estimate pore pressures from a variety of drilling and logging data.
  • Relate regional and local rock stress magnitudes to failure of seals.
  • Evaluate how to assess volumes which can be safely sequestered in underground storage.
  • Interpret typical pressure profiles in terms of subsurface fluid processes, such as lateral drainage (open aquifers) and lateral transfer (enhanced pressures and a drilling surprise).
  • Perform basic pressure prediction calculations and estimate storage volumes.
  • Review and critique relevant case study material.

Training Course Content

Session One

  • Introduction
  • Components of evaluation for drilling, injection and storage of fluids
  • Pressure plots. Exercises
  • Typical pressure profiles and relationship with reservoir/storage and overburden
  • Generating an overburden (Sv) curve. Exercise

Session Two

  • Overpressure generating mechanisms and recognition using velocity-density plots
  • Basics of pore pressure prediction. Exercise
  • Relationship between shale and reservoir pressures

Session Three

  • Fluid pressure compartments and rock seals
  • Membrane leakage relationship between fluid and rock properties
  • Fracture pressure and its prediction
  • Hydraulic seal failure and assessing seal breach risk. Exercise
  • Determination of volumes and safe for storage below failure pressure

Session Four

  • Open aquifers vs closed traps for underground storage
  • Depleted reservoirs advantages and disadvantages
  • Hydrodynamics in open aquifers and influence on storage. Exercise

Session Five

Case studies

  • Drilling
  • Injection
  • Storage
  • Production and associated depletion

Course delivery details

  • 2pm-5.30pm BST
  • Five 3.5-hour interactive online sessions presented over 5 days (mornings in North America and afternoons in Europe). A digital manual and exercise materials will be distributed to participants before the course. Some reading and exercises are to be completed by participants off-line.

About provider

Providing world-class training for the energy industry, GeoLogica is an experienced team with an extensive network of tutors and instructors on their books. Their expertise spans both subsurface training for the oil and gas industry, as well as training aimed...

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GeoLogica Limited

Oxford Point, 19 Oxford Road
BH8 8GS Bournemouth Dorset

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