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What Is GasPal and Why Use GasPal?
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What Is GasPal and Why Use GasPal? Maraco Inc. 2014
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What Is GasPal and Why Use GasPal?. Maraco Inc. 2014. What Is GasPal?. What Is GasPal?. GasPal is an integrated gas reservoir simulator that Integrates formation, tubing and surface lines Models multiple phase flow in formation and pipes - PowerPoint PPT Presentation
Transcript of What Is GasPal and Why Use GasPal?
What Is GasPal andWhy Use GasPal?
Maraco Inc.2014
www.maraco.info 2
What Is GasPal?
www.maraco.info 3
What Is GasPal?GasPal is an integrated gas reservoir simulator that
Integrates formation, tubing and surface linesModels multiple phase flow in formation and pipesCombines cluster of reservoirs with multiple layersAllows multiple offtake pointsAllows loops and splits in surface networkModels production and injection wells for storage
reservoirsHas different production modes such as Free Flow, DCQ
and NominationMakes short, mid and long term planning with hourly,
daily and monthly time stepImposes quality constraints such as CO2 content
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Integrated Nodal Analysis
Layer 1
Layer 2
Layer 3
ReservoirTubing
Aquifer
Surface
Surface Line
Gas
Gas
Gas
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Modeling Each Reservoir With Arbitrary Grids
Arbitrary grids allow fewer cells to model a reservoir effectively. Fewer cells translate to fast simulation.
GasPal models well interference effectively with a grid tailored to the reservoir by the user.
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Modeling Gas, Water and Oil Flows in Reservoir
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Modeling Multiple Phase Flow in TubingIndustry standard correlations are used to model tubing pressure drop for multiple phase flow.
Users can further calibrate each correlation against well test data, using a least squares method imbedded in an effective proprietary algorithm.
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Modeling Fluid Flow in a Surface Network
1. Loops and splits in surface lines
2. Multiple offtake points
3. Compressors and other surface facilities such as separators
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Model Production System With Multiple Platforms and Complex Surface Network
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Why GasPal?
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GasPal Is VersatileGasPal can model a production system as simple as a
single simulation cell, single layer, or as complex as 50+ platforms with 800+ wells and 5000+ layers.
GasPal can make short, medium and long term forecasts with hourly, daily, weekly or monthly time steps.
GasPal has multiple production modes to model different scenarios:Free flow without choke and other mechanical restrictionsLimited flow considering sand-control, pipe vibration,
market demand, spare capacity, CO2 constraints and more.
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GasPal Is FastA typical 30-years simulation run takes
Seconds for a single platformMinutes for a moderate complex systemLess than 2 hours for a 800+ wells,
5000+layer systemFast simulation allows users to make
different case-studies to answer “what-if” questions quickly
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GasPal Is User-Friendly: InputGasPal runs on any Windows-based
computers without special requirements.GasPal has carefully crafted Graphic User
Interface, designed by petroleum engineers, used and improved by petroleum engineers
Users can enter data Using conventional methods such as typing
data reservoir by reservoir, or Using copy-and-paste from Excel through
several “Grand Data Input” panels
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GasPal Is User-Friendly: OutputGasPal has extensive built in output graphs
(150+ types and growing) so users can analyze the simulation results without leaving GasPal.
GasPal also writes output results into MDB database files so users can use existing tools to do other analyses
GasPal can also export output into text/CSV files that can be readily loaded into Excel.
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Sample Output and Menu for Output
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GasPal Has Many FeaturesConvenient history match
Well gas, water and condensate ratesFlowing, wellhead and gauge pressureManifold pressure, rate and CO2 content
Numerous well inflow options Standard Darcy’s law (drainage radius, k, h & skin)AB methodC/n method, etc.
Numerous ways to model water and condensate productionsDarcy’s law and relative permeability curvesEmpirical WGR/CGR curves for wells or layers
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Continuously ImprovingGasPal is updated regularly to add new
features. Some of the recent additions areWell and surface facility downtimePlatform maintenance schedulingGray well cutoff rate methodNon-adiabatic compression modelingLiquid removal at various surface locationsTime-dependent surface network
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Fast Services From MaracoQuick response to answer users questionsProactive to new features requested by users
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Dr. Elmer DoughertyPresident, founder
Maraco.Professor Emeritus,
Petr & Chem Eng, USC - University of Southern California
SPE – Distinguished Member & Legion of Honor
50 years of reservoir simulation and optimization experience.
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Dr. Jincai ChangPetroleum consultant
and software engineer.23 years of experience
in reservoir simulation and optimization
Teaching “Reservoir Simulation” at University of Southern California, Los Angeles, California, USA
