Sami Rassas is a senior reservoir geologist and geomodeller with over 26 years of experience in oil and gas exploration and production. He has extensive experience building complex 3D reservoir models integrating multiple data sources and assessing uncertainties. He has strong leadership, communication, and mentoring skills and experience managing multi-disciplinary teams on major projects.

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Sami Rassas Senior Reservoir Geologist / Geomodeller
724 Caven Circle Cellular : (514) – 290 19 68
H4M 2C2 Ville Saint Laurent Email : samirassas45@gmail.com
Montreal, QC, Canada
LinkedIn URL : https://www.linkedin.com/in/sami-rassas-b421b320?trk=nav_responsive_tab_profile
Senior Reservoir Geology Specialist / Geomodeller
26+ Years experiences in well site reservoir geological characterization, petrophysics and oil and gas geo-modelling
Profile
More than 26 years of experiences in oil and gas exploration and production as a reservoir geologist. Skills include:
 Building and updating complex reservoir 3D geomodels that integrates petrophysical, seismic interpretation, core
and log data as well as sequence stratigraphy and depositional models using PETREL software.
 Highly experienced in working within multi-disciplinary Asset Team including geophysicists, petrophysicists
Exploitation and Production Engineers in close collaboration to ensure full data integration of all inputs to the
geomodel and to meet dynamic simulation modelling requirements.
 Skills in reservoir key uncertainty parameters identification and uncertainty analysis to define P10, P50 and P90 oil
and gas volumetric scenarios. Achieved geomodelling inputs to Full Field Development Plan.
 Heavily involved in yearly Volumetric assessment and update including risk analysis, mitigation and provided
geological inputs for economic evaluations.
 Highly skilled in identifying by-passed oil using 3D geomodels built in Petrel and recommending potential infill
drilling opportunities to maximize reservoir lateral and vertical sweep efficiency. Well planning and follow-up
while drilling to ensure well trajectory reach the planned target.
 Excellent Team player with strong interpersonal skills and the ability to work effectively with diverse
personalities, functional groups and senior level staff. Large exposure to multicultural working environment.
 Skills in oral communication and technical presentation during meeting with joint venture companies or
management (workshops, TCM, etc...).
 Work planning, resources management and confident leader and mentor.
 Experience in preparing all technical documents related to scope of work, tendering, bids evaluation and contracts
for logging and reservoir geology studies.
 Fast-learner and excellent organizational abilities.
 Multilingual: English, French and Arabic.
Skills & Abilities
Geo-modelling ofsubsurface oil and gas reservoir
 Built 3D static geo-model of three major oil reservoirs in United Arab Emirates totalizing a daily production of
550000 Barrels of oil per day using PETREL software. Achieved successfully the biggest static geo-model in
ADCO company history totalizing 138 million grid blocks. Models were approved by shareholders during formal
technical workshops and were adopted for dynamic modeling and for the elaboration of the full field development
plan.
 Awarded company certificate of achievement for building 3D static model of the biggest onshore oil field in
United Arab Emirates that added 1.5 Billion barrels of oil in place that were subsequently proven through dynamic
simulation.

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 Achieved constructing eight sector geo-models as part of a mega Enhanced Oil Recovery (EOR) project worth 1.2
Billion dollars of investment in a record time of eight months as per project timeline. Sector models were approved
by shareholders and considered as instrumental in overall project progress.
 Accomplished corporate resources evaluation and review through Reservoir key uncertainty parameters
identification and uncertainty analysis to define P10, P50 and P90 oil volumetric scenarios.
Multidisciplinary data integration
 Integrated data from multidisciplinary sources such as petrophysics, geophysics, reservoir geology, sequence
stratigraphy, depositional environment models and production to build coherent 3D static geo-model.
 Demonstrated high analytical skills in conducting geological data QA/QC and validation prior to integrated full
field major studies such as sequence stratigraphy framework and reservoir rock type project.
Projects planning, resourcesmanagement and leadership
 Lead Geology / Geophysics Studies Group consisting of eight members including geo-modelers, petrophysicits,
geophysicists and sedimentologists.
 Established a master work plan for the whole group for 5 years integrated with the other business segments
(operations, petroleum and reservoir engineering) and that take into account projects priorities and dependency,
corporate objectives and available resources.
 Coordinated and followed-up all G&G studies and projects through organizing and leading meetings to discuss
progress status of all studies and projects and help overcome critical issues.
Communication and technical presentation
 Established efficient communication channels with involved departments and staff members ensuring good
coordination and flow of data.
 Presented to management and during industry shareholders technical meetings work progress and main results.
 Secured shareholders’ approval during milestone meetings related to major projects progress and results.
Coaching, mentoring and staffdevelopment
 Performed coaching and mentoring of young geoscientist as per detailed corporate development plans.
 Appointed in the position of a senior assessor and verifier of young geoscientists ensuring that their individual
development plans are reaching pre-specified targets.
 Member of the corporate Career Ladder panel of Geosciences in charge of staff technical progression
and identification skills gap.
Professional experience
ADCO (Abu Dhabi Company for Onshore Petroleum Operations Ltd.) 2002 to 2016
http://www.adco.ae/En/Pages/default.aspx
Reservoir Geology Specialist / Geo-Modeler
Geology / Geophysics Studies Group Leader
 Constructed multiple scenario static reservoir geo-models integrating available 3D seismic, well logs, sequence
stratigraphy framework, core analysis, production and reservoir analogue data.
 Geology / Geophysics Studies Group Leader of eight staff: managed work plans, effectively tracking progress
towards deliverables, identifying risks, proposing solutions and proving written reports and oral presentations on
project milestones.
 Coaching and mentoring young geoscientist.

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CTKP (Tunisian Kuwaiti Petroleum Company) 2001 to 2002
Senior Development Geologist
 Built 3D naturally fractured reservoir geological model that was approved by Shareholders and successfully used
for dynamic simulation modelling.
 Elaborated all geology related documents needed for appraisal drilling campaign including well prognosis report,
tendering documents of mud-logging, coring, logging and well sitting programs.
 Organized and conducted technical presentations to shareholders.
ETAP (Tunisian National Oil Company) 1993 to 2001
http://www.etap.com.tn/
Senior Reservoir Geologist
 Performed petrophysical well log interpretation using Terralog software, reservoir mapping and volumetric
calculation.
 Assigned as well sitting geologist, logging program design and witnessing, cuttings and core description
and final well report elaboration.
Geoservices Overseas (Schlumberger group ofcompanies) 1990 to 1993
http://www.slb.com/services/drilling/surface_logging.aspx
Mud-Logging / Senior Data Engineer
 Mud logging, data engineer and drilling parameters monitoring during well drilling operations.
 Well sitting geology, core / cutting description, coring and casing point identification.
 Final well report elaboration.
Education
Specialized University Studies Degree in energy sector management, 2001,University of Montréal, Ecole Des
Hautes Etudes Commerciales (HEC)
National Engineering Degree in Geosciences, 1988,Faculty of Mathematics, Physics and Natural Sciences,
University of Tunis – Manar,Tunisia (Six years university studies, equivalent to Master degree in Geosciences as
determined by World Education Services, WES, Toronto, ON)
University Degree ofScientific Studies in Biology and Geology, 1984,Faculty of Sciences and techniques, Sfax,
Tunisia.
N.B. Please refer to attached appendix for further details on technical skills, trainings and published technical papers.
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