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 EXPERTISE
over 20 years of experience as a reservoir engineer, specializing in numerical simulation, heavy oil, EOR processes, fluid characterization and management of integrated projects. Most of this consulting experience is in studying Venezuelan, Mexican and Argentinean fields.
 EDUCATION
* Ph.D., Chemical Physics, Harvard University, Cambridge, Mass., 1979
* M. S., Physical Chemistry, Indiana University, Bloomington, Ind., 1973
* B. S., Chemistry, Indiana University, Bloomington, Ind., 1972
 EMPLOYMENT
2003 – Present Vista Energy Consulting, Inc.
President
Completed a simulation study of the Bogi-Capiron Field, Oriente Basin, Ecuador for Repsol YPF Ecuador (2003)
1/1998 – 2003 NITEC LLC, Denver, Colorado
Principal Member
Completed a preliminary R&D study to develop a proprietary process for heavy oil South America.
Developed a data set for the use of AHM software for the simulation of the largest oil field in the world. (Saudi Aramco, 1998)
Performed a history match in an important oil field in Argentina in order to obtain predictions of its future behavior and increase of reserves. (Chihuido de la Sierra Negra, YPF, 1998-1999)
Reservoir engineering, numerical simulation and integration with other disciplines in the development of a new field in Southeast Asia. (Kartini, Maxus SE Sumatra, 1998-1999).
Reservoir engineering and integration with other disciplines in two naturally fractured reservoirs in Southeast Asia (Krishna UBR & LBR, Maxus SE Sumatra, 1998-1999)
Planning, reservoir simulation, and reservoir engineering of a heavy oil naturally fractured reservoir in Southeast Asia. (Intan, Maxus SE Sumatra, 1999)
Compositional and black-oil simulation courses in South America. (YPF: Sede Central, Loma La Lata, 1998)
Compositional simulation course in Spain. (Repsol YPF, 2002)
Simulation course in Bolivia. (Andina S.A., 1998)
Reserves updating for Loma la Lata Field (Repsol YPF, 2000)
PVT Characterization of Loma la Lata fluids (Repsol YPF, 2000 – 2002)
Migration of Loma la Lata model from COMP3 to Eclipse 300 (Repsol YPF, 2001)
Project Manager of the updating project for Loma la Lata. (Repsol YPF, 2002)
Project Manager for the Chihuido de la Sierra Negra Project. (Repsol YPF 2001-2003)
Project Manager Integrated Study Muspac Field (Gas-Condensate) (PEMEX, 1999-2000)
Project Manager Integrated Study Catedral Field (Gas-Condensate) (PEMEX, 1999-2000)
Project Manager Integrated Study Sen Field (Volatile oil) (PEMEX, 2000-2001)
Project Manager Integrated Study Cononaco Field (Medium Oil) (Petroproducción - Ecuador, 2001-2002)
Steam and CO2 injection Los Perales Field.(Repsol YPF, 2002)
In-situ upgrading (World Energy Systems, 2001)
In charge of marketing and sales.
1993 – 1998 Scientific Software-Intercomp, Inc., Denver, Colorado
Vice-president (1997-1998)
In charge of business development for Latin America, quality control of the consulting projects in Denver and interface between the products and consulting divisions of the company.
Project Manager of a naturally fractured reservoir in Mexico (Caparroso)
Senior Consulting Associate and Manager of Latin American Operations (1995-1997)
Participated in the following studies:
Integrated study of Chiapas Copanó (PEMEX, 1993-1994)
Integrated study of Agave (PEMEX, 1993-1994)
Integrated study of Caan (PEMEX, 1993-1994)
Integrated study of Cactus (PEMEX, 1995-1997)
Integrated study of Paredón (PEMEX, 1995-1996)
Integrated study of JujoTeco-Minoacán (PEMEX, 1995)
Integrated study of Jacinto (PEMEX, 1995)
Integrated study of Caparroso (PEMEX, 1997)
Integrated study Libertador Field (Petroproduccion – Ecuador, 1994-1996)
History Match Chihuido de la Sierra Negra (YPF, 1995)
Integrated study of Lago Centro (PDVSA, 1994-1995)
History Match of a field in the middle east (ADNOC, 1993-1994)
Simulation of Dan Field (Maersk, 1993)
Steam injection Project simulation (AGIP, 1993)
Senior Consulting Associate (1993-1995)
In charge of technical support for the simulation software.
Taught thermal, and, compositional simulation courses in USA, México, Venezuela and Malaysia.
Provided technical support for the simulators of the company: SIMBEST II, COMPIII, COMP4, THERM, and AHM.
1981 – 1992 INTEVEP, S.A.(Filial de Petróleos de Venezuela, S.A.), Los Teques, Venezuela
Manager of Heavy and Extra heavy Oil Recovery (1990-1992)
Responsible for technical aspects of R&D projects in heavy oil recovery for PDVSA.
Head of the Numerical Simulation Section (1987-1990)
Responsible for technical and managerial supervision of reservoir simulation for Intevep, and support for the corporation.
Principal Investigator (1981-1987)
Participated in different studies and projects in R&D and technical applications for PDVSA, especially in EOR, thermal methods, compositional simulation and improvements of simulators.
1979 – 1983 Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
Researcher in the Center for Petroleum and Chemistry.
Research in Statistical Thermodynamics
 OTHERS
* Fluent in Spanish and English.
* Director, Computer Modelling Group, Calgary Alberta (1990-1992)
* Representative of PDVSA in Annex V of MEM-US DOE Agreement (1990-1992)
* Member of Technical Committees of various conferences (UNITAR, LACPEC, SPE Thermal Operations Symposium, etc.)
* Authored over 25 technical publications
* Expertise in the use of the following simulation software: Eclipse 100, Eclipse 300, SimBest II, CompIII, Comp4, Comp5, THERM, STARS.
LIST OF PUBLICATIONS
R. Perez Herrera, C. Ozgen, T. Firinciolu, and P. Colonomos, "Full Field Fracture Characterization and Compositional Dual Porosity Modeling of a Complex Fractured Volatile Oil Reservoir – Sen Field, Mexico," presented at the 2nd Meeting on Reservoir Simulation Buenos Aires, Argentina November 2002
R. Park, P. Crevello and P. Colonomos, " Integrated Study of Nurbani Field," presented at the AAPG Conference, Bali Indonesia, 2000.
P.Colonomos, R. Park. S. Siafar, "Fracture Characterization in Krishna Upper Batu Raja Formation," SPE 54383 presented at the SPE Asia and Pacific Conference, Jakarta, 1999.
H. Araujo, J. S. Uttley, M. Mercado, and P. Colonomos, "An Integrated Evaluation of a Complex Fractured Carbonate Gas Condensate Field, " SPE 39844 presented at the 1998 SPE Meeting Villahermosa, Tab.
Z. Mendez, J.M. Alvarez, E. Escobar, P. Colonomos, and E. Campos; "Cyclic Steam Injection with Additives: Laboratory and Field Test Results of Steam/Foam and Steam/Solvent Processes," SPE 24632 presented at the 1992 SPE Annual Fall Meeting, Washington, D.C.
M. Villalba, H. Rodriguez, L. Zerpa, M. Newman, and P. Colonomos; "Simulation of Alternating In-Situ Combustion with Oxygen in a Heavy Oil Reservoir," SPE 23671 presented at the 2nd SPE Latin American Conference (LAPEC), Caracas, 1992. Also presented at the In-Situ Combustion Forum, Tulsa, OK.
M. Villalba, H. Rodriguez, L. Zerpa, M. Newman, and P. Colonomos; "Simulation of the Intermittent In-Situ Combustion Process," (in Spanish) presented at the IX Technical Meeting of SVIP, Maracaibo, 1991.
C. Gonzalez, M. Hassan, P. Colonomos, and M. Quijada, "A Graphical Pre and Postprocessor for Reservoir Simulation," (in Spanish) presented at the VII Technical Meeting of SVIP, Puerto La Cruz, 1989.
R. Paredes, P. Colonomos, and M. Octavio; Fluid Displacement using Percolation Models," presented at the 3rd Simposio de Recuperacion Mejorada de Crudos (SIREMCRU), Maracaibo, 1989.
M. Hassan, A. Salazar and P. Colonomos; "Effect of Reservoir Heterogeneities on the Numerical Simulation of Cyclic Steam Injection Processes," presented at the lst International Symposium on Numerical Simulations, Alpbach, 1988.
E. Chacin, O. Urdaneta, and P. Colonomos; "Feasibility of Steam Injection at 8000 Feet," presented at the 4th UNITAR Conference, Edmonton, 1988.
A. Salazar, N. Sanchez, C. Martinez, and P. Colonomos; "Simulation of Field Results of Cyclic Steam/Gas Injection in the Bolivar Coast, Western Venezuela," SPE 16732 presented at the 1987 SPE Annual Fall Meeting, Dallas, Texas.
M. Hassan, P. Vaca, and P. Colonomos; "Behavior of a Horizontal Well for the Exploitation of Heavy Oil Reservoirs Under Natural Depletion and Cyclic-Steam Injection," (in Spanish) presented at the 2do Simposio de Recuperacion Mejorada de Crudos (SIREMCRU), Maracaibo, 1987.
J. L. Trallero and P. Colonomos; "Distillation Effects in Steam Injection Processes," (in Spanish) presented at the 2do. Simposio de Recuperacion Mejorada de Crudos, Maracaibo, 1987.
E. Gonzalez and P. Colonomos; "Thermodynamic K-Value Equations," (in Spanish) presented at the 2do. Simposio de Recuperacion Mejorada de Crudos, Maracaibo, 1987.
A. Salazar and P. Colonomos; "Effect of Gas Injection in Cyclic Steam Injection," (in Spanish) presented at the 2do. Simposio de Recuperacion Mejorada de Crudos, Maracaibo, 1987.
E. Gonzalez and P. Colonomos; "A K-Value Implicit Model," presented at the Ninth SPE Reservoir Simulation Symposium, San Antonio, Texas, 1987.
P. Colonomos; "A Feasibility Study of Cyclic Steam Injection in a Deep Heavy Oil Reservoir in Western Venezuela," SPE 15091 presented at the 1986 SPE California Regional Meeting, Oakland, CA.
I. Rusinek and p. Colonomos; "Linear Optimization of Pade Approximants. Application for Capillary Pressures and Relative Permeability Determinations," (in Spanish) Revista Tecnica Intevep 5(1), 45 (1985).
E. Gonzalez, P. Colonomos and C. Espinoza; "Simulation of a Gas Condensate Reservoir," (in Spanish) presented at the 1985 Annual Meeting of the Venezuelan Chapter of the GPA, Caracas, 1985.
P. Colonomos, E. Gonzalez and I. Rusinek; "A New Approach for Characterizing Oil Fractions, and for Selecting Pseudocomponents of Hydrocarbons," presented at the 35th Annual Technical Meeting of the Petroleum Society of CIM, Calgary, 1984. Revised manuscript published in the Jour. Can. Pet. Tech. 25, 78-85 (1986).
P. Colonomos and H. R. van Domselaar; "Permeability Shape Factors for Unconsolidated Sands," Revista Tecnica INTEVEP 2(1), 57 (1982).
P. Colonomos and R. G. Gordon; "Bounds for Cumulative Distribution of Molecular Weights in Polymer Solutions," presented at the American Chemical Society National Meeting, Las Vegas, NV, 1982.
I. Rusinek and P. Colonomos; "Transitional Dissociation Probabilities from Classical Energy Transfer Moments in a Collinear Atom-Morse Oscillator Model," (in Spanish) presented at the XIV Latin American Chemistry Congress, San Jose, Costa Rica, 1981.
E. Paredes and P. Colonomos; "Calculation of X-Ray Diffraction Curves for a System of Hard-Parallel Cylinders with a Liquid-like Order. A Model for the Craze Structure," J. Appl. Cryst. 14, 414 (1981). Also presented at the American Physical Society March Meeting, Phoenix, 1981.
J. B. Hubbard, P. Colonomos and P. G. Wolynes; "Molecular Theory of Solvated Ion Dynamics. III. The Kinetic Dielectric Decrement," J. Chem. Phys. 71, 2652 (1979).
P. Colonomos and P. G. Wolynes; "Molecular Theory of Solvated Ion Dynamics. II. Fluid Structure and Ionic Mobilities," J. Chem. Phys. 71, 2644 (1979).
B. Enos, P. Colonomos and D. A. McQuarrie; "Force Balances in Systems of Spherical Polyelectrolytes," J. Coll. and Interf. Sci. 52, 289 (1975).
P. Colonomos and R. G. Gordon; "Bounded Error Analysis of Experimental Distribution of Relaxation Times," J. Chem. Phys. 71, 1159 (1979).
A. P. Nelson, D.A. McQuarrie and P. Colonomos; "Electrostatic Coupling Across A Membrane with Titrable Surface Groups," J. Theor. Biol. 50, 317 (1975).
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