Petrophysical Advisor

Nicholas A. Wiltgen, Jr.

Registered Petrophysical Engineer experienced in gathering, evaluating, and interpreting petrophysical, geophysical,

geological

and production/reservoir data for operations, development, and exploration interests.

Areas of Technical Experience:

Texas (East, West and Gulf Coast), Permian Unconventional, Offshore East & West Coast and Gulf of Mexico, Rocky Mountains

(NM, Utah, Wyo, Colo), China, Arabian Gulf (onshore and offshore Abu Dhabi and Qatar), USSR/CIS, North Sea, West Africa,

Egypt, Libya, Indonesia, Algeria.

Areas of Project Management Experience:

Project Manager - USSR/CIS Log Analysis Project (Several Major Oil Companies) 1993; Project Manager - Tight Gas Sands

Research (GRI), 1990-91; Project Manager - Pressure Maintenance Program (Amerada Hess Abu Dhabi) 1984-85; Project

Manager - Arzanah Reservoir Field Study (Amerada Hess Corp.) 1983-84.

Summary of Experience:

KOSMOS ENERGY LLC. 2013 to 2014

Dallas, Texas

Senior Petrophysicist –Production and Technical Services

Perform petrophysical studies on JUBILEE, TEN and MTAB. To conduct field reviews and reservoir studies within and

with integrated project teams and ensure static model results are consistent with petrophysical

interpretations. (Geolog)

NOBLE ENERGY INC. 2010 to 2013

Houston, Texas

Senior Petrophysical Advisor – Corporate /Offshore Exploration & Development

Perform petrophysical studies on a prospect or existing prospects within the offshore deepwater basin

and using

geophysical, geological, petrophysical and well-test data to explore its exploitation.

Currently working on SENEGAL, SANTIAGO and DEEP BLUE deepwater projects. (Techlog)

DEVON ENERGY CORPORATION 2003 to 2010

Houston, Texas

Petrophysical Advisor – Deepwater Reservoir Characterization /Offshore Exploration & Development

Perform petrophysical studies on a prospect or existing prospects within the offshore deepwater basin

and using

geophysical, geological, petrophysical and well-test data to explore its exploitation.

Projects included JACK, ST MALO, CASCADE and KASKIDA deepwater projects. (PowerLog)

SCHLUMBERGER - HOLDITCH RESERVOIR TECHNOLOGIES 1998 To 2003

College Station, Texas

Nick A. Wiltgen, Registered Professional Engineer

Schlumberger Public

Principal Geoscientist - Senior Petrophysical Engineer

Perform studies that identified a prospect or existing prospects within a basin

and using

geophysical, geological, petrophysical and well-test data to explore its exploitation.

Evaluate existing fields for potential operating improvements, additional development, and

recoverable reserve potential using seismic, wireline logs, core, pressure, geological,

production, and completion data. Comprehensive understanding of integrated reviews

for a basin, appraisal or field studies (GeoFrame/ELANPlus, IP and PETCOM).

Z & S CONSULTANTS INC. 1996 To 1998

Houston, Texas

Interpretation Specialist

Performed petrophysical studies for Phillips in the North Sea-Exploration Blocks and evaluated

for potential operating improvements, additional development, and recoverable reserve potential

using seismic, wireline logs, core,pressure, geological, production, drilling and completion data.

Comprehensive understanding of Z & S software which includes RECALL/REVIEW/PETROS II.

DeGOLYER and MacNAUGHTON 1996 To 1998

Dallas, Texas

Interpretation Specialist

Performed openhole petrophysical studies on all Rao GazProm (USSR/CIS) properties such as Orenburg, Karachaganak,

Tagrinsk and Yuzhno Russkoye gas fields. This was done by working with and using the methods used by the Russian

geophysicist of GazProm Moscow. Performed casedhole pulsed neutron interpretations for Sonatrach in an Algerian field for

integration into their reservoir simulator and single well openhole petrophysical studies of the Mudi reservoir for Ensearch in

Indonesia. (PETCOM/PowerLog)

QATAR GENERAL PETROLEUM CORPORATION (QGPC) 1993 To 1996

Doha, State of Qatar (Arabian Gulf)

Head of Petrophysical Studies

Comprehensive understanding of reservoir characterization which is a modern and complete interpretation

taking into account all the accessible attributes at different scales and from them determine

the dynamic attributes associated with the reservoir. Evaluate existing fields for potential operating improvements, additional

development, and recoverable reserve potential using seismic, wireline logs, core, pressure, geological, production, drilling and

completion data.

This includes reservoir monitoring using WFL, TDT and PLT’s.

Performed integrated petrophysical field reviews for reservoir simulation.

Beginning with a known field in which hydrocarbon production is well established, collected geophysical, geological,

petrophysical and reservoir engineering data to combine into a field study to build a detailed 3D geologic model of each

reservoir unit This included fields such as Dukhan, IS, MM, BH and North. Supervised staff engineers.

RESTECH HOUSTON, INC. 1990 To 1993

Houston, Texas

Manager of Petrophysics

Conduct formation evaluation research for Gas Research Institute in Tight Gas Sands

contract No. 508*-***-****.

This included poroelasticity, permeability, static and dynamic acoustic properties and in-situ stress

of Tight Gas Sands.

Perform appraisal studies that identified a prospect or existing prospects within a basin and used

geophysical, geological, petrophysical and well-test data to explore its exploitation. Evaluate existing fields for potential

operating improvements, additional development, and recoverable reserve potential using seismic, wireline logs, core, pressure,

geological, production, and completion data. Comprehensive understanding of integrated reviews for a basin, appraisal or field

studies.

ORYX ENERGY COMPANY (Formerly Sun E and P) 1985 To 1990

Dallas, Texas

Regional Log Analyst - Southern Region Exploration

Interpretation of Petrophysical data (open and cased hole, by computer or hand)

Nick A. Wiltgen, Registered Professional Engineer

for exploration geology and geophysics.

Responsible for all Southern Region’s logging contracts and invoices.

Developed Exploration’s “Long Range Plan for Logging” including economic analysis for evaluating options.

AMERADA HESS CORPORATION

New York, London, and Abu Dhabi

Staff Petroleum Engineer - International 1983 To 1985

Supervised consultants on a field study to predict the 10 year reservoir performance plan

for Arzanah Field - Abu Dhabi.

Designed, planned and implemented development of Pressure Maintenance Program

for Arzanah Field - Abu Dhabi.

Proposed and persuaded drilling of seventeen wells in Arzanah Field with the use

of seismic velocity inversions.

Chaired and participated in engineering subcommittees with partners.

Interfaced with government agencies (DOP - Abu Dhabi).

SHELL OIL COMPANY

New Orleans, Louisiana

Supervisor, Geophysical Support - Development Division 1981 To 1983

Responsible for exploring and modeling the relationships between seismic and petrophysical

data with the exploration

department. This included checkshot surveys, synthetic seismograms,

hydrocarbon modeling, masked fluid effects along with VSPs. Responsible for developing synthetic logs for the exploration

department which were derived from

trace attribute analysis. Well attributes calculated from empirical relationships of lithology, porosity and shale content in

thin and thick beds. Maintained trend data for bulk densities, shear and compressional velocities versus depth and pressure of

exploration and development areas. Developed computer programs for generating synthetics. Directed three technical assistants,

two computer operators and two clerks.

Petrophysical Engineer - Eastern Region 1979 To 1981

Responsible for the monitoring and petrophysical planning of offshore drilling exploration wells.

Worked with the exploration and development geologists.

Obtained data from well logs to generate porosity, water saturation, and permeability.

Laboratory analysis performed on drill cuttings, sidewall cores and whole cores.

SCHLUMBERGER WELL SERVICES 1974 To 1979

Synergetic Engineer - Denver, Colorado

General Field Engineer - Casper, Wyoming

Senior Field Engineer - Farmington, New Mexico

Field Engineer - Vernal, Utah

Junior Field Engineer - Ventura, California

Performed field logging services for clients at the wellsite (both OH & CH).

Worked in the Denver computing center generating computer aided

products such as Corband and Sarabands

Education:

B.S.E.E., Electrical Engineering, Purdue University, Lafayette, Indiana USA (1974)

World Trade Center Language School, New York, New York USA (1985)

Personal Data: Professional Affiliations:

D.O.B June 8, 1952 Society of Petroleum Engineers AIME

Married Society of Professional Well Log Analysts

Good Health Society of Exploration Geophysicists

Petroleum Engineer International, Special Meritorious Award for Engineering Innovation 1998

Nick A. Wiltgen, Registered Professional Engineer

Schlumberger Public

Publications:

“NMR Aids Gulf Exploration Shift To Lower Tertiary”,

N. Wiltgen, American Oil and Gas Reporter, pages 81-85, February 2009

“Shale Volumes have Large Uncertainties in the Lower Tertiary Deepwater”,

N. Wiltgen, SPE 114775, September 21, 2008

“The Contradiction in the Lower Tertiary Deepwater GoM”,

N. Wiltgen, SPE 114758, September 21, 2008

“Using Geostatistical Inversion of Seismic and Borehole Data to Generate Reservoir Models

for Flow Simulations of Magnolia Field”

Mark Bogaards; McCarthy, Peter; Willingham, Dick; Brand, John; Ezekwe, John; Paradiso, Bob; Wiltgen, Nick;

Bridge, Alex; Durkee, Mark SEG November 6-11, 2005

"Methods of Saturation Modeling Using Capillary Pressure Averaging and Pseudo"

Nick A. Wiltgen, Joel Le Calvez, and Keith Owen

SPWLA 45th Annual Symposium, June 24, 2003

“A Case Study: Field Development Plan for a Highly Overpressured Gas Reservoir in China

by a Multidisciplinary Consulting Team”,

Haiping Li, PetroChina; Hongjie Xiong, James Wang, Rolf J. Broetz, Hilary Azoba, Thomas A. Ryer, Gary D. Miller,

Tami Chism Rahn, Nicholas A. Wiltgen, Brad M. Robinson, Ralph L. Kugler, Donald W. Lee, Richard A. Plumb, Ron

Martin, John Spivey, Schlumberger; Luongde San, and Wenjie Song, PetroChina, SPE 77668, 29 September–2

October 2002

“Strength Driven Well Completions”,

Nicholas A. Wiltgen Jr., George Dozier, Donald W. Lee, Richard Allen Plumb,

Schlumberger Reservoir Characterization Forum, Ridgefield 25-28 September 2001

“An Estimate of the Uncertainty of Residual Oil Saturatiom Derived from Log-Inject-Log

Measurements from a Middle East Carbonate Reservoir”,

N. Wiltgen, S. Al-Merikhi and I. Al-Othman, SPE 36258, October 1996

“Accuracy of SORw and SORg Monitoring in a Middle East Carbonate Reservoir”

N. Wiltgen, S. Al-Merikhi and I. Al-Othman, SPE 36220, October 1996

“Accuracy of Sorw and Sorg Monitoring in a Middle East Carbonate Reservoir”

N. Wiltgen, S. Al-Merikhi and I. Al-Othman, 37th Annual SPWLA Symposium, June 1996

“The Essentials of Basic Russian Well Logs and Analysis Techniques”,

N. Wiltgen, 35th Annual SPWLA Symposium, June 1994.

“Russian Lateral (BKZ) Analysis”,

N. Wiltgen and R. Truman, SPE 26433, October 1993.

“Improved In-Situ Stress and Permeability Depth Profiles in the Canyon Tight Gas Sands”,

N. Wiltgen, IGRC International Gas Research Conference, November 1992.

“Results of Applied Research in the Canyon Sands, Val Verde Basin Southwest Texas”,

S. Hamlin, W. Miller, R. Peterson and N. Wiltgen, In Focus, Gas Research Institute, July 1992

“Petrophysical Support for Geophysical Applications”

Shell Oil Company - 1981, Offshore Memorandum Report, Southern E&P Region, New Orleans, Louisiana.

“TDT Interpretation in the San Juan Basin,”

El Paso Natural Gas Regional, 1978 Farmington, New Mexico.

Nick A. Wiltgen, Registered Professional Engineer

References

Name Title Phone Email

Chief Reservoir Engineer

Joe Paterson 281-***-**** acd9r5@r.postjobfree.com

acd9r5@r.postjobfree.com

Dr. John Shafer Core Consulting 832-***-****

Mickey Head Petrophysical 713-***-**** acd9r5@r.postjobfree.com

Consulting

Nick A. Wiltgen, Registered Professional Engineer

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