Who Should Attend
Geologists, Geophysicists, Petrophysicists, Geo
Technologists, Completions, Production and Operations Engineers
This course provides an introduction to Geoscientists
and other disciplines to the gas well / play reservoir engineering
methodologies from discovery to depletion. It will highlight the methodologies
to determine OGIP, resource evaluation and commerciality of a gas well / play.
The liquids-rich nature of gas reservoirs, PVT properties and OGIP calculation
based on both Volumetric and Production data will be covered. Calculation of
drainage areas and depletion risk as a result of infill drilling in both
conventional and unconventional settings will be discussed.
Towards the end, gas contracting terms and definitions
will be introduced, and the economic considerations of a gas field / play
development planning will be discussed. The inter-dependent working
relationship between geoscientists and reservoir engineers in reservoir
evaluation will be highlighted throughout the course.
1-Day Training Course
– 08:45 Introductions
– 09:00 Natural Gas
& the LNG Trade - A Global Commodity
Statistics of global natural gas production
and LNG trade. Top producers, top exporters, top consumers and major shipping
– 10:00 What Makes Gas
Gas PVT properties, 2-phase
diagram, how to determine if the gas reservoir is dry, rich or ultra liquids-rich,
what is their production behavior, condensate drop-out and banking, examples
from Montney and Spirit River plays.
– 10:15 Break
– 10:45 Gas Properties
- z-factor, Bg and Expansion Factor
Setting the stage for OGIP
calculation. What do the above properties mean and how to calculate them.
– 11:30 Volumetric
OGIP Calculation – Geos, It’s All About You!
How to perform the volumetric OGIP
calculation and its various inputs. Uncertainties in determining net pay,
porosity and water saturation. Work through a couple of examples from the
Montney and Lower Mannville.
11:30 – 12:30 Lunch
12:30 – 13:15 OGIP
from Engineering Data
behavior of gas reservoirs from pressure data. How do reservoir engineers
calculate OGIP from pressure and production data? Depletion-drive vs
water-drive gas reservoirs. Why collaboration between the geologist and
reservoir engineer is critical at this stage.
13:15 – 14:00 Infill
Drilling Considerations – Depletion and Drainage Areas
want to infill? Great! Have you taken into account depletion effects from
existing production or calculated the drainage area of existing producers?
14:00 – 14:15 Break
14:15 – 15:30 Gas
Field / Plays Development Economics
contracting terms and development considerations. Take-or-pay, plateau rates,
gas-pricing mechanisms. Mock economic analysis of an unconventional gas play
under two different development strategies.
15:30 – 16:00 Wrap-Up