Tigress Engineering lets production engineers monitor the
construction and production history of a well, and reservoir
engineers model reservoir behaviour using pressure test
measurements and the results of laboratory fluid experiments.
Results from pressure analysis and black oil and compositional
fluid analysis are used directly within Tigress
Simulation to model fluid flow.
On this page you can find summaries and features lists for:
Well view
Summary
Entry of a well's historical construction and production history
events.
Features
Features include:
- ASCII file and spreadsheet entry of all events.
- Historical construction events are graphically illustrated as a
wellbore schematic diagram.
- Schematic can be displayed for any period in the well's
history.
- Display of well zonation to ensure correct
completion.
There are 21 construction events, including:
- drilling
- casing
- cement
- perforation
- packers
- liners
- tubing
- pumps.
Five geology and production events include:
- production data
- flowmeter
- static tests
- logging
- coring.
Production data includes:
- rates
- cumulatives
- ratios
- cuts
- pressures
- days.
General and naming events include:
- well symbol
- location
- elevation
- platform
- rig and quadrant names.
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Pressure analysis
Summary
Analysis of pressure test data to determine wellbore and
reservoir characteristics.
Features
Determines well and reservoir characteristics, including:
- pressure
- permeability
- skin factors
- storage factors
- drainage area
- mobility.
You can generate diagnostic plots from pressure history to help
determine the type of analysis, which can be manual or automatic
regression analyses.
Manual methods include:
- Horner
- MDH
- SSS
- Afterflow
- fracture and faulting
- dual porosity
- inclined and horizontal wells
- gas
- composite and multiple.
Automatic methods include:
- Afterflow
- fracture and faulting
- dual porosity
- spherical flow
- partial penetration.
Analysis options include:
- straight line fits to standard models (regressed or manually
adjusted)
- type curve analysis
- non-linear regression.
There is also a prediction facility to determine length of
future test.
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Black oil properties
Summary
Generation of black oil tables for pressure analysis and
simulation to describe fluid phase behaviour.
Features
Features include:
- choice of fluid to model black oil (saturated or unsaturated)
dry gas, gas condensate
- a range of correlations for formation volume factor,
viscosity
- results are in tabular display
- facility to derive black oil properties from laboratory data
stored in the database.
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PVT analysis
Summary
Equation of state (EOS) modelling of reservoir surface fluids
for use in compositional simulation.
Features
Features include:
- tabular entry of laboratory PVT data (compositional analyses
and laboratory experiments)
- choice of EOS options for volume correction (Soave,
Peng-Robinson, Zudkevich-Joffe)
- a library of physical properties for standard components
- performs EOS simulation of standard laboratory experiments,
including constant composition expansion, differential liberation,
constant volume depletion and multi-stage separator
- EOS prediction of phase envelope
- allows for simultaneous non-linear EOS regression on a number
of experiments
- a pseudoisation facility
- displays results graphically and in spreadsheet form.
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