Delivering solutions worldwide
The people of StrataGen have proven that no challenge is too great.
StrataGen consultants provide world-class capabilities that help our clients succeed. StrataGen team members are recognized as industry leaders in virtually every aspect of reservoir stimulation.
Integral to success of many notable accomplishments
- The world record for proppant pumped in a single well—13.1 million pounds in the North Sea Chalk. This well was one of 100 propped fracture treatments in horizontal wells.
- The first large-scale offshore platform-based propped fracturing campaign in [Malaysia/the world (need to clarify)] involving 20 wells and 79 fracture treatments in the Malaysia gas sands.
- The first successful propped fracture treatment campaign in Japan. The deep volcanic rock formation presented an extremely difficult propped fracturing environment; before StrataGen was brought in, two prior treatments had failed. StrataGen’s design, evaluation and on-site supervision of six stages led to post-fracture production that was 160% of the target rate.
Unmatched expertise in unconventional and tight gas field developments
- The integration of fracture modeling and diagnostics in Northern Mexico in order to optimize fracture designs and well placement, and to identify the need for re-fracs.
- Optimizing fracture treatment design and evaluating infill drilling strategies—involving reservoir modeling, pressure transient analysis (PTA) and fracture modeling—in a shallow gas project in Canada.
- In the gas sands of West Texas, StrataGen consultants conducted infill drilling and fracture engineering studies involving 1,000 wells.
- In East Texas, StratGen developed waterfrac technology that has been integral to the industry’s successful development of gas sands.
With U.S. offices in Houston, Denver (Co.) and Bakersfield (Ca.), and international offices in the Netherlands and Russia, StrataGen can responsively serve clients anywhere in the world.
HOUSTON
Lyle V. Lehman
Sales, Marketing and Principal Project Manager– Consulting
Lyle Lehman has been principally involved in tight gas stimulation throughout his 30+ year career which has taken him from West Texas to the U.S. Mid-Continent and Latin America. Lyle has written more than 12 papers on various aspects of stimulation including rock mechanics, frac fluids, conductivity and economics surrounding decision making in stimulation design and field development. Lyle has six patents with several patents pending all in the area of stimulation. He has principally worked as a consultant throughout his career but was the product manager for stimulation for Halliburton and was drilling and completions practice manager for Landmark. Lyle earned a BS in chemistry (qualified program) from the University of Oklahoma. He is currently involved in managing projects and business development for StrataGen.
Brian Dzubin
Sr. Engineering Consultant
Brian Dzubin is a senior engineering consultant for StrataGen in Houston. His responsibilities include the design and evaluation of hydraulic fracturing treatments, interpretation of diagnostic fracture injection tests and field studies. Prior to joining StrataGen in 2007, he worked for Halliburton Energy Services for five years as a fracturing engineer in South Texas, followed by two years of technical sales in Houston. He also has additional experience working in the Permian basin for Bass Enterprises Production Company in Midland, TX. He holds a BS in petroleum engineering from the University of Texas at Austin.
Lyle V. Lehman
Sales, Marketing and Principal Project Manager– Consulting
Lyle Lehman has been principally involved in tight gas stimulation throughout his 30+ year career which has taken him from West Texas to the U.S. Mid-Continent and Latin America. Lyle has written more than 12 papers on various aspects of stimulation including rock mechanics, frac fluids, conductivity and economics surrounding decision making in stimulation design and field development. Lyle has six patents with several patents pending all in the area of stimulation. He has principally worked as a consultant throughout his career but was the product manager for stimulation for Halliburton and was drilling and completions practice manager for Landmark. Lyle earned a BS in chemistry (qualified program) from the University of Oklahoma. He is currently involved in managing projects and business development for StrataGen.
Brian Dzubin
Sr. Engineering Consultant
Brian Dzubin is a senior engineering consultant for StrataGen in Houston. His responsibilities include the design and evaluation of hydraulic fracturing treatments, interpretation of diagnostic fracture injection tests and field studies. Prior to joining StrataGen in 2007, he worked for Halliburton Energy Services for five years as a fracturing engineer in South Texas, followed by two years of technical sales in Houston. He also has additional experience working in the Permian basin for Bass Enterprises Production Company in Midland, TX. He holds a BS in petroleum engineering from the University of Texas at Austin.
Elyezer Lolon
Staff Engineer
Elyezer Lolon is a senior staff engineer at StrataGen in Houston. His responsibilities include designing and evaluating hydraulic fracturing treatments and reservoir simulation studies, as well as interpreting diagnostic fracture injection test, pressure transient and production data. Ely previously worked at Chevron Pacific Indonesia as a petroleum engineer. He holds a BS in Petroleum Engineering from Bandung Institute of Technology in Indonesia and an MS and Ph.D. in petroleum engineering from Texas A&M University.
Koras Shah
Staff Engineer
Koras Shah earned a bachelor's degree with distinction in chemical engineering from the Government Engineering College at Gandhinagar, India, and a MS in petroleum engineering from the University of Missouri at Rolla, where he focused on managing the reservoir aspect of oil & gas wells. He conducted research in the application of boundary element method in reservoir simulation under Dr. Numbere.
Randy Andress
Principal Engineering Consultant
Randy Andress is responsible for reservoir engineering, fracture design and analysis as well as project management at StrataGen Engineering. Before joining StrataGen in 2008, Randy had logged more than 20 years in the industry, developing a breadth of experience through various jobs including field service manager, technical representative, and regional engineer with companies such as BJ Services, Conoco (Lobo Business Unit) and Total E&P USA. He has experience with simulation and analysis software, downhole tools and hardware, coiled tubing fracturing technologies, cementing technologies and completion and workover procedures, as they apply in various formations. He earned his BS in petroleum engineering at Texas A&M University.
DALLAS
Lon Settle
Texas/Mid-Continent Engineering Manager
Lon joined StrataGen in 2006 as staff engineer, and is now the Texas/Mid-Continent engineering manager. Lon has experience in a wide range of stimulation and cementing applications, including HTHP environments in South Texas and the Barnett shale in North Texas. He has designed and supervised fracture treatments in reservoirs with temperatures up to 400°F and pressures up to 15,000 psi that require state-of-the-art, cross-linked fluid systems, high-strength proppants, and the most advanced stimulation equipment. Lon has also designed and supervised large volume, high-rate “water-frac” treatments in unconventional reservoirs and foam fracs in shallow, under-pressured reservoirs. Lon’s expertise includes detailed fracture modeling analyses, “real-time” fracture engineering, onsite frac QC and supervision and the application of fracture mapping data to improve stimulation designs and completion strategies. Prior to joining StrataGen, Lon worked for BJ Services for seven years. He graduated in 1998 with a BS in chemical engineering from the Colorado School of Mines.
Staff Engineer
Elyezer Lolon is a senior staff engineer at StrataGen in Houston. His responsibilities include designing and evaluating hydraulic fracturing treatments and reservoir simulation studies, as well as interpreting diagnostic fracture injection test, pressure transient and production data. Ely previously worked at Chevron Pacific Indonesia as a petroleum engineer. He holds a BS in Petroleum Engineering from Bandung Institute of Technology in Indonesia and an MS and Ph.D. in petroleum engineering from Texas A&M University.
Koras Shah
Staff Engineer
Koras Shah earned a bachelor's degree with distinction in chemical engineering from the Government Engineering College at Gandhinagar, India, and a MS in petroleum engineering from the University of Missouri at Rolla, where he focused on managing the reservoir aspect of oil & gas wells. He conducted research in the application of boundary element method in reservoir simulation under Dr. Numbere.
Randy Andress
Principal Engineering Consultant
Randy Andress is responsible for reservoir engineering, fracture design and analysis as well as project management at StrataGen Engineering. Before joining StrataGen in 2008, Randy had logged more than 20 years in the industry, developing a breadth of experience through various jobs including field service manager, technical representative, and regional engineer with companies such as BJ Services, Conoco (Lobo Business Unit) and Total E&P USA. He has experience with simulation and analysis software, downhole tools and hardware, coiled tubing fracturing technologies, cementing technologies and completion and workover procedures, as they apply in various formations. He earned his BS in petroleum engineering at Texas A&M University.
DALLAS
Lon Settle
Texas/Mid-Continent Engineering Manager
Lon joined StrataGen in 2006 as staff engineer, and is now the Texas/Mid-Continent engineering manager. Lon has experience in a wide range of stimulation and cementing applications, including HTHP environments in South Texas and the Barnett shale in North Texas. He has designed and supervised fracture treatments in reservoirs with temperatures up to 400°F and pressures up to 15,000 psi that require state-of-the-art, cross-linked fluid systems, high-strength proppants, and the most advanced stimulation equipment. Lon has also designed and supervised large volume, high-rate “water-frac” treatments in unconventional reservoirs and foam fracs in shallow, under-pressured reservoirs. Lon’s expertise includes detailed fracture modeling analyses, “real-time” fracture engineering, onsite frac QC and supervision and the application of fracture mapping data to improve stimulation designs and completion strategies. Prior to joining StrataGen, Lon worked for BJ Services for seven years. He graduated in 1998 with a BS in chemical engineering from the Colorado School of Mines.
Gonzalo Flores
Staff Engineer
Gonzalo Flores is a staff engineer providing engineering consulting services (completions/fracturing) in West Texas, eastern New Mexico and East Texas. He joined StrataGen after working with BJ Services for 5 years. While at BJ Services, Gonzalo held various positions including associate engineer, field engineer, district engineer and region engineer. He graduated from Texas Tech University with a BS in chemical engineering.
David Tragesser
Field Engineer
Before joining StrataGen in 2005, David Tragesser honed his skills as field engineer and district engineer, first with Halliburton and then with BJ Services. David has extensive experience in the design, coordination and supervision of hydraulic fracturing, acidizing and cementing treatments, including many hours of in-field design, lab work and testing. David earned his petroleum engineering degree with honors at the University of Texas at Austin.
BAKERSFIELD, CA
William (Bill) Minner
California Engineering Manager
In 1995, Bill joined StrataGen and opened the Bakersfield office, making the transition from a hydraulic fracturing advisor for Unocal to a consulting engineering role. Bill has assisted with the design, execution and analysis of hydraulic fracture treatments in diverse oilfield environments around the world. In California, he is recognized for his practical expertise and experience in nearly all formations fractured on the west coast.
MOSCOW, RUSSIA
Brian Davidson
Commercial Director
Brian is a seasoned petroleum engineer with more than 28years of field experience in the design and completion of hydraulic fracturing treatments. Prior to joining StrataGen in 1999, Brian was a senior petroleum engineer for Holditch & Associates specializing in all aspects of hydraulic fracturing. Brian has served as project manager for major fracturing projects domestically and internationally and has served as technical advisor for the Advanced Stimulation Technology Program. Prior to joining Holditch & Associates, Brian spent eleven years with Halliburton Energy Services in different technical positions. He is currently responsible for the coordination and development of all StrataGen work in Russia.
Stanislav Sheludko
Senior Fracturing Engineer
Stan is an experienced petroleum engineer with more than seven years of field experience in the design and completion of hydraulic fracturing treatments. Prior to joining StrataGen in 2006, Stan was a senior staffing consultant for Ancor Energy Services and spent four years with Schlumberger Well Services in different technical positions. He earned a degree in wireline engineering and petrophysics at Gubkin Russian State University of oil and gas.
Nijat Guliyev
Fracture Engineer
Nijat Guliyev is a native of Azerbaijan who speaks four languages: Azeri, Russian, English and Turkish. He earned his Masters degree at Azerbaijan State Oil Academy in 2004, where he specialized in engineer economics. Nijat started his career with Halliburton Eurasia in 2003 where he specialized in coiled tubing operations, sand control and fracturing. He joined StrataGen in 2007 in Moscow where he provides fracture engineering services – field frac job supervision, onsite and post-job analysis, and reporting, organizing and arranging sales.
Vasily Mironov
Engineering Project Manager – Moscow Office
Vasily’s career with StrataGen started in 2006 as a senior fracture engineer. His responsibilities consist of onsite fracture engineering, pre- and post-frac evaluation studies, training courses in hydraulic fracture engineering, technical support to FracproPT users, marketing and managing StrataGen Services in Russia including engineering consulting, FracproPT fracture modeling software and mapping projects. Before joining StrataGen, Vasily worked as desk and field stimulation engineer at Halliburton Energy Services and PetroAlliance in different locations around Western Siberia, Russia. He also gained extensive production operations experience working at Lukoil-AIK E&P Company (Lukoil JV) where he was involved in production optimization and flooding operations, workover activities, well testing and production enhancement. Vasily received his bachelors and masters degrees from Moscow State Gubkin’s University of Oil and Gas in natural gas engineering. He gained fracture engineering background at Halliburton Technical Excellence Center in Brighton, Colorado.
DELFT, THE NETHERLANDS
Hans de Pater
Manager, Delft
Hans works primarily on rock mechanics-related projects, as well as on HIT technology development. Hans worked as a consultant to StrataGen for several years prior to the opening of the Delft office, which he heads. He brings vast experience with fracturing in the North Sea environment to StrataGen. For 24 years Hans held a position at the Technical University of Delft where he conducted research on fracturing issues, including physical model tests to determine the geometry of hydraulic fractures, especially near-deviated and horizontal wellbores, and analysis of field treatments in deviated and horizontal wells. Prior to this, Dr. de Pater worked at the Shell Research Lab and the Soil Mechanics Laboratory. Hans has authored numerous papers on fracturing related issues and is active in European SPE technical activities.
Josef Shaoul
Engineering Manager, Delft
With more than 20 years industry experience, Josef conducts fracture stimulation studies (both pre- and post-frac), onsite fracture engineering, FracproPT training courses, welltest analysis, reservoir simulation studies and software development. Before he joined StrataGen in 1996, Josef worked at RES, where he was the lead software engineer for development of the FracproPT real-time hydraulic fracturing simulator and design tool. He was also responsible for FracproPT support and training courses. Prior to that Josef worked for Hunter Geophysics, where he was responsible for design and implementation of hardware and software for remote data acquisition in both real-time and offline tiltmeter mapping applications. Josef received BS and MS degrees from MIT in electrical engineering and computer science. He worked at the Schlumberger Palo Alto Research Center while carrying out research for his masters' thesis.
Bart Vos
Business Development Manager, EAME, Delft
Bart has diverse experience in the oil industry. During the past 15 years, he has worked in several different fields. He began his career in software development for directional drilling and later went on to work in the field of drilling performance in Baker Hughes’ drilling division. Prior to joining StrataGen in 2004, he worked in the G&G industry as the global marketing manager for Fugro-Jason for several years. As an engineer at StrataGen, he has worked on FDP completion and production engineering, hydraulic fracturing, and production engineering in Europe, Africa and the Middle East. Bart holds a master's degree in petroleum engineering from Delft University.
Winston Spitzer
Senior Consultant, Delft
Winston joined StrataGen's Delft office in 2004 as a senior consultant with 20 years industry experience. He currently manages onsite fracture engineering, quality control and fracture stimulation studies for StrataGen. Before joining StrataGen, Winston gained extensive office and field experience as a stimulation engineer working for Halliburton Energy Services in Russia. More than 800 fracture treatments have been designed and executed by Winston during this period. He worked for Halliburton Reservoir Services in Africa and switched to the stimulation department in 1994. Winston received a masters degree in petroleum engineering from Delft University of Technology in The Netherlands.
Field Engineer
Before joining StrataGen in 2005, David Tragesser honed his skills as field engineer and district engineer, first with Halliburton and then with BJ Services. David has extensive experience in the design, coordination and supervision of hydraulic fracturing, acidizing and cementing treatments, including many hours of in-field design, lab work and testing. David earned his petroleum engineering degree with honors at the University of Texas at Austin.
BAKERSFIELD, CA
William (Bill) Minner
California Engineering Manager
In 1995, Bill joined StrataGen and opened the Bakersfield office, making the transition from a hydraulic fracturing advisor for Unocal to a consulting engineering role. Bill has assisted with the design, execution and analysis of hydraulic fracture treatments in diverse oilfield environments around the world. In California, he is recognized for his practical expertise and experience in nearly all formations fractured on the west coast.
MOSCOW, RUSSIA
Brian Davidson
Commercial Director
Brian is a seasoned petroleum engineer with more than 28years of field experience in the design and completion of hydraulic fracturing treatments. Prior to joining StrataGen in 1999, Brian was a senior petroleum engineer for Holditch & Associates specializing in all aspects of hydraulic fracturing. Brian has served as project manager for major fracturing projects domestically and internationally and has served as technical advisor for the Advanced Stimulation Technology Program. Prior to joining Holditch & Associates, Brian spent eleven years with Halliburton Energy Services in different technical positions. He is currently responsible for the coordination and development of all StrataGen work in Russia.
Stanislav Sheludko
Senior Fracturing Engineer
Stan is an experienced petroleum engineer with more than seven years of field experience in the design and completion of hydraulic fracturing treatments. Prior to joining StrataGen in 2006, Stan was a senior staffing consultant for Ancor Energy Services and spent four years with Schlumberger Well Services in different technical positions. He earned a degree in wireline engineering and petrophysics at Gubkin Russian State University of oil and gas.
Nijat Guliyev
Fracture Engineer
Nijat Guliyev is a native of Azerbaijan who speaks four languages: Azeri, Russian, English and Turkish. He earned his Masters degree at Azerbaijan State Oil Academy in 2004, where he specialized in engineer economics. Nijat started his career with Halliburton Eurasia in 2003 where he specialized in coiled tubing operations, sand control and fracturing. He joined StrataGen in 2007 in Moscow where he provides fracture engineering services – field frac job supervision, onsite and post-job analysis, and reporting, organizing and arranging sales.
Vasily Mironov
Engineering Project Manager – Moscow Office
Vasily’s career with StrataGen started in 2006 as a senior fracture engineer. His responsibilities consist of onsite fracture engineering, pre- and post-frac evaluation studies, training courses in hydraulic fracture engineering, technical support to FracproPT users, marketing and managing StrataGen Services in Russia including engineering consulting, FracproPT fracture modeling software and mapping projects. Before joining StrataGen, Vasily worked as desk and field stimulation engineer at Halliburton Energy Services and PetroAlliance in different locations around Western Siberia, Russia. He also gained extensive production operations experience working at Lukoil-AIK E&P Company (Lukoil JV) where he was involved in production optimization and flooding operations, workover activities, well testing and production enhancement. Vasily received his bachelors and masters degrees from Moscow State Gubkin’s University of Oil and Gas in natural gas engineering. He gained fracture engineering background at Halliburton Technical Excellence Center in Brighton, Colorado.
DELFT, THE NETHERLANDS
Hans de Pater
Manager, Delft
Hans works primarily on rock mechanics-related projects, as well as on HIT technology development. Hans worked as a consultant to StrataGen for several years prior to the opening of the Delft office, which he heads. He brings vast experience with fracturing in the North Sea environment to StrataGen. For 24 years Hans held a position at the Technical University of Delft where he conducted research on fracturing issues, including physical model tests to determine the geometry of hydraulic fractures, especially near-deviated and horizontal wellbores, and analysis of field treatments in deviated and horizontal wells. Prior to this, Dr. de Pater worked at the Shell Research Lab and the Soil Mechanics Laboratory. Hans has authored numerous papers on fracturing related issues and is active in European SPE technical activities.
Josef Shaoul
Engineering Manager, Delft
With more than 20 years industry experience, Josef conducts fracture stimulation studies (both pre- and post-frac), onsite fracture engineering, FracproPT training courses, welltest analysis, reservoir simulation studies and software development. Before he joined StrataGen in 1996, Josef worked at RES, where he was the lead software engineer for development of the FracproPT real-time hydraulic fracturing simulator and design tool. He was also responsible for FracproPT support and training courses. Prior to that Josef worked for Hunter Geophysics, where he was responsible for design and implementation of hardware and software for remote data acquisition in both real-time and offline tiltmeter mapping applications. Josef received BS and MS degrees from MIT in electrical engineering and computer science. He worked at the Schlumberger Palo Alto Research Center while carrying out research for his masters' thesis.
Bart Vos
Business Development Manager, EAME, Delft
Bart has diverse experience in the oil industry. During the past 15 years, he has worked in several different fields. He began his career in software development for directional drilling and later went on to work in the field of drilling performance in Baker Hughes’ drilling division. Prior to joining StrataGen in 2004, he worked in the G&G industry as the global marketing manager for Fugro-Jason for several years. As an engineer at StrataGen, he has worked on FDP completion and production engineering, hydraulic fracturing, and production engineering in Europe, Africa and the Middle East. Bart holds a master's degree in petroleum engineering from Delft University.
Winston Spitzer
Senior Consultant, Delft
Winston joined StrataGen's Delft office in 2004 as a senior consultant with 20 years industry experience. He currently manages onsite fracture engineering, quality control and fracture stimulation studies for StrataGen. Before joining StrataGen, Winston gained extensive office and field experience as a stimulation engineer working for Halliburton Energy Services in Russia. More than 800 fracture treatments have been designed and executed by Winston during this period. He worked for Halliburton Reservoir Services in Africa and switched to the stimulation department in 1994. Winston received a masters degree in petroleum engineering from Delft University of Technology in The Netherlands.