Bonnie S. Percy, P.E.

Registered Professional Engineer skilled in practical reservoir engineering, hydrology, environmental engineering, numerical simulation, pressure transient analysis and as an expert witness for state hearings. 

Education: 
B.S., Chemical Engineering, Texas A&M, 1980 

Professional Certification: 
Professional Chemical Engineer:        Texas #63158           Wyoming #6360 
OSHA 29 CFR 1910.120 (40-Hour Course)                           February, 2008
Annual 8-Hour Refresher                                                       May 2008        

Professional History: 
June 2001 to Present         Reservoir Engineer, Groundwater Engineer, Gene R. George
                                               & Associates, Inc., Casper, WY
1996 - 2000                     Reservoir Engineer and Hydrologist, Power Resources, Inc., Casper,WY
1992 - 1996                     Environmental Engineer, Maxim technologies, Inc., Casper, WY
1980 - 1992                     Reservoir Engineer, ORYX Energy (Sun Exploration and
                                     Production Co.), Texas, Oklahoma, New Mexico, Colorado, Wyoming

Professional Career:
2001 to Present   Gene R. George & Associates, Inc.

• Conducted numerous reservoir engineering studies to determine drainage areas, infill drilling opportunities, and recompletion potential.  The studies included log analysis of LAS format digital well logs using LESA software; decline analysis; pressure transient analysis including Reciprocal Productivity Index method; and economic evaluation.
• Determined reserves and forecast production for various coal bed methane properties in the Powder River Basin using isotherm/volumetric analysis methods in analogy to typical well/decline methods.
• Presented exhibits and served as expert engineering witness at numerous hearings before WOGCC.  Prepared permit applications and provided expert witness testimony for five water disposal wells in Sweetwater, Campbell and Sublette Counties, Wyoming.

1996 to 2000   Power Resources, Inc.

• Conducted hydrologic testing of the Wasatch Formation and permitted three new wellfields at the Highland Uranium Project developing a total of 3.5 Million lbs of Uranium reserves.
• Provided technical support and operations design for the Gas Hills Project Permit Application and the Ruby Ranch Project Permit Application which have 25 Million lbs of Uranium reserves in the Wasatch and Ft. Union Formations.
• Supported development, operations and restoration at the Highland Uranium Project with wellfield design, wellfield balancing, hydrologic modeling, and pressure transient analysis.

1992 to 1996   Maxim Technologies, Inc., (Huntingdon, Chen-Northern)

• Conducted numerous Phase I ESAs of oil and gas, commercial, light industrial and residential properties including review of NPDES permits, SPCC Plans, compliance issues and norm surveys.
• Managed Phase II ESAs including two site investigations for Conoco, Inc. for the releases of refined petroleum products from pipelines. The projects involved waste, groundwater, soil and air sampling and analyses, determination of contamination extent, recommended improvements in chemical handling procedures, assessment of natural attenuation and evaluation of applicable remediation alternatives.
• Served as the interim environmental coordinator for Black Thunder Mine, Thunder Basin Coal Company, a subsidiary of ARCO, Inc.  Responsibilities included tracking, collection, storage, and shipment for disposal of hazardous waste, used oil and waste grease generated at the mine using RCRA and DOT guidelines.

1980 to 1992 Oryx Energy Company, (Previously Sun Company, Inc.)

• Developed five Morrow and Atoka deep gas discoveries utilizing pressure transient analysis, material balance P/Z and volumetrics. This resulted in the drilling of 10 wells at 1.5 million dollars each; eight were producers.
• Testified as an expert witness at state hearings. Served on technical committees for three proposed secondary units.
• Supervised four ressim engineers while concurrently performing simulation projects.  Conducted one-on-one training of new simulation engineers as well as coordination and support of company wide simulation workstation training.
• Performed a reservoir study of a 10 million dollar gas cycling project in the Dakota formation of Wyoming using a compositional simulator in support of technical committee objectives.
• Predicted the waterflood performance of eight proposed waterflood projects in  Oklahoma, Texas and offshore using Nolen's VIP, a black oil simulator.
• Simulated steam injection for heavy oil in California using SSI's THERM, a thermal model.  Doubled recovery by recommending a change from cyclic to continuous steam injection.
• Monitored existing waterfloods recommending recompletions, pattern changes and injection rates as needed.  Evaluated injection performance using pressure fall-off testing and injection profiles.
• Prepared feasibility studies to implement secondary recovery projects or infill drill existing projects.
• Coordinated development of two new waterfloods, including pattern optimization and the drilling of 30 secondary recovery wells.

Continuing Education: 
Reciprocal Productivity Index, PSI, 2002 
Fundamentals of Groundwater Geochemistry, NGWA, 1998 
Visual MODFLOW, NGWA, 1997 
Water Flooding: Performance, Predictions and Surveillance, Smith and Cobb, 1990 
Well Test Analysis, Ragahvan 1985, and Oryx 1990 
Numerical Simulation, JS Nolen & Associates, 1988 
Bioremediation Engineering Design and Applications, 1994 
Bioventing Principles, Applications and Case Studies, 1994 
Hazardous Materials/Waste Management Certification, OSU, 1992 
AHERA Asbestos Inspector/Management Planner, 1993 
40-Hour OSHA Training CFR 1910.120, 1992 

Publication:
Hydrology and Permeability Testing in the Fort Union Case Study of the H-Wellfield, Highland Uranium Project, Wyoming, Percy, Bonnie, 1999, WGA Guidebook Coalbed Methane and the Tertiary Geology of the Powder River Basin, Wyoming and Montana, pp. 141-153.