NAME OF PRESENTATION -...
Transcript of NAME OF PRESENTATION -...
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OLI Simulation Conference 2012
A Predictive Process for Managing the Disposal of
Produced Water from Systems of Oil and Gas Wells
James Hardy – ChemCorr, LLC Ashwin Dhanasekar, Kenneth Carlson
Department of Civil & Environmental Engineering Colorado State University
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OLI Simulation Conference 2012
A Predictive Process for Managing the Disposal of Produced Water from Systems of Oil and Gas Wells
• Background of the Project • Goals for the Field Management Tool • Goals for the Chemistry Tool • Chemistry in the Chemistry Tool • Examples • Future Work
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OLI Simulation Conference 2012
Background of the Produced Water Project
• Hydraulic Fracturing
• Increased Water Usage
• Produced Water
• Increasing Population & Industry
• Overall Water Balance
• Wattenberg Field
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OLI Simulation Conference 2012
Area of Consideration – Wattenberg Field, CO
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OLI Simulation Conference 2012
The Field Management Tool • Data Collection from Producers
• Analysis
• GIS Implementation
• Water Quality Analysis
• Chemical Calculator Development
• Integration of GIS & Chemistry Tool
• Development of Application
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OLI Simulation Conference 2012
Water Quality Data
Water Quantity
Data
Processing into
Chemistry Calculator
Charge Balance & Equilibrium Calculations
Development of Link –
Chemistry Calculator &
GIS Map
Final GIS Based Application with Custom Tools for Water Quality Analysis
Output Excel File
Co-ordinates
Database File Water Data
Production Data
ArcGIS Geodatabase
Map Service Development
Publish Service
Development of Web
Application
Using Services as
Layers
Developing Web Map
Reconcile pH
Reconcile Alkalinity
Model Composition Softening to
a Set pH
Measured pH
Measured Alkalinity
Predicted Solids, TDS, pH, Alkalinity, Conductivity, Density
Compare to Measured
Solids Removed
Recover Water - RO
Neutralize to a Set pH
Osmotic Pressure
Schematic of the Planned Tool
Reagents Required
Reagents Required
Chemistry Output
Water Recovery & Residue
Chemistry Tool - CalcAq
GIS Tool - ArcGIS
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OLI Simulation Conference 2012
Integrating ArcGIS & CalcAQ • GIS Map will be developed as an interactive application
• Link will be setup between map and Excel
• Excel file will be hosted on the CEWC Web Server
• The Chemistry Tool will be setup on the CEWC Server
• Client will be able to access information through the map
• An Analyst will be able to update with the chemistry tool
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OLI Simulation Conference 2012
Goals for the Chemistry Tool • Validate the Water Analysis
• Critically evaluate and recommend improvements in the Water Analysis
• Predict the properties of the produced water from the analysis
• Predict the results of transport, treatment, and disposal
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OLI Simulation Conference 2012
Water Quality Analysis • Unavailable Water Quality Data
• Sampling – In Progress
• Water Quality Tests
– Mg, Ca, Sr, Ba, Fe, K, Na
– Cl-, SO4=, PO4
-3
– pH, Alkalinity,
– Conductivity, TDS
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OLI Simulation Conference 2012
Processes in a Treatment Plant
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OLI Simulation Conference 2012
Process Scheme for the Chemistry Tool Charge
Balance
Cond
Reagents
Cond
Reagents
Gas
Escapes
Gas
Escapes Settl_GasHCl pH
Adjuster
Disinfect
Reagents
ChgBal
Anal. #
Analysis Recycle_Mix_In Recycle_Out Cond_Out Flocc_Out Settling_Out Sol/Liq Filtrate RO_Perm
Equil_Tk_Out
Source_Rec Cond_Rx_InpH
Adjustment Solid_Set - Until Purge RO_Resid - Until Purge
Base_Adj Settled Solids - Some remain
Alkalinity Filter_Wash RO_Wash
Acid_Adj
Softening Tank RO_Purge Out
Additional Wells/Analyses Filter_Recyc_Out
Produced Water
Chem Conditio
Equil Tank
Reverse Osmosis
Flocculation
Sol/Liq Sepn
Recycle Mix
RO Purge
DisinfectionSettling
Filter Purge
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OLI Simulation Conference 2012
Processing into Chemistry Calculator
Output Excel File
Reconcile pH
Reconcile Alkalinity
Model Composition
Softening - Set pH
Measured pH
Measured Alkalinity
Predicted Solids, TDS, pH, Alkalinity,
Conductivity, Density
Compare to Measured
Solids Removed
Recover Water -
RO
Neutralize - Set pH
Osmotic Pressure
Chemistry Portion of the Tool
Reagents Required
Reagents Required
Chemistry Output
Water Recovery & Residue
Chemistry Tool - CalcAq
Water Quantity Data
Water Quality Data Charge Balance &
Equilibrium Calculations
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OLI Simulation Conference 2012
Chemistry in the Chemistry Tool • Charge Balance
• Alkalinity Adjust (CO2 at present)
• pH Adjustment (NaOH at present, Iterate)
• Molecular Equivalent
• Chemical Conditioning – Set pH • Neutralization and RO – Osmotic P and H2O extraction to solid formation
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OLI Simulation Conference 2012
Examples & Screen Shots
• Flat File – Input
• Summary and Control Screen
• Process Screen (Typical)
• Flat File – Stream Characteristics
• Flat File – Process Results
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OLI Simulation Conference 2012
Flat File – Input
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OLI Simulation Conference 2012
Summary - Control Screen
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OLI Simulation Conference 2012
Process Screen (Typical)
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OLI Simulation Conference 2012
Flat File – Stream Characteristics
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OLI Simulation Conference 2012
Flat File – Process Results
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OLI Simulation Conference 2012
Future Work • Optimized routing for truck traffic & pipelines
• Group wells for centralized treatment
• Improve models for the treatment processes
• Improve Error Handling
• Wizards to solve chemistry problems
• Improve water analysis, including oil carryover
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OLI Simulation Conference 2012
Acknowledgments
• Funding from
– Noble Energy
– Colorado Energy Water Consortium
– Colorado State University
• Hamp Turner - Programming Advice