CESAR LEAL

MSc. RENEWABLE ENERGY ENGINEERING (DISTINCTION HONORS)

MSc. RESERVOIR GEOSCIENCES AND ENGINEERING

PROJECT MANAGEMENT SPECIALIST

BSc. PETROLEUM ENGINEER (CUM LAUDE HONORS)

Abu Dhabi (UAE) – Nationality: Colombian

https://www.linkedin.com/in/cesaraleals

+971-**-***-**** cias123 @hotmail.com

PROFESSIONAL PROFILE

Professional Engineer with valuable experience acquired along with the oil-gas & energy industry, working across production, operations, petroleum-reservoir engineering and project management, business opportunities identification and development strategies implementation, being problems analysis and solving minded. Excellent and self-motivated work identifying/planning/executing short, medium and long-term development plans through integrated teamwork, with negotiation skills and under effective communication pillars. I have an appropriate understanding of engineering processes empowered with an ambitious and multi-task performance, plus an active spirit of researching and innovation, leadership, and ethical and integral behavior. Moreover, I use to work under HSEQ standard policies with time, resources, risks, uncertainties and stakeholders considerations, focused on a goal & detail- oriented attitude to deliver successful qualitative/quantitative results. Currently, I want to broaden my background as an integral engineer that tackles the energy challenge, developing and deploying the portfolio of options in the energy sector in line with the sustainable and responsible production & consumption of natural resources, highlighting all my previous experience, background and strengths that drive my professional profile and my commitment with the energy future of the Earth. SKILLS

Project management and multidisciplinary integrator.

Renewable energy technologies and policies.

Leadership with ethical values and mentoring skills.

Development of standard procedures.

Goal & detail-oriented attitude and team-player.

Committed, responsible, organized and adaptable.

Researching and reporting.

Verbal and written skills.

Knowledge & experience in the oil & gas business.

Operational and production optimization experience.

Artificial lift design, nodal analysis and troubleshooting.

Knowledge & experience in the oil & gas business.

Management, monitoring and surveillance processes.

Enhanced Oil Recovery (gas/water/CO2).

Decline curve and pressure transient analysis

Transport phenomena, thermodynamics, modelling.

Technical Skills: Prosper WellFlo Pipesim Sahara (Waterflooding) AVOCET-OFM Openwells Saphir Cougar (uncertainty analysis) MS Office tools Reo (Knowledge) MBAL-Eclipse-Petrel RE (Knowledge) Data Sciences (ongoing with Python) Matlab Simulink Languages:

English (high proficiency)

French (intermediate)

Spanish (mother tongue)

EDUCATION

1. MSc. Renewable Energy Engineering. 2022

University of Aberdeen. Aberdeen, Scotland (UK). GPA: A (1st Class Grade). Student with Honors. Degree work: “Development of an holistic framework to assess the sustainability of renewable energy technologies: a tool for decision makers”.

Project Abstract: The project was focused on drawing the path to foresee the weighted criteria and indicators with their ranking methods, leading towards the generation of a structured standard framework aimed at evaluating how clean are renewable energy technologies (RET), measuring comparatively their sustainability, followed by a wide review where diverse Life Cycle Analysis (LCA) and RET assessments were considered, evaluated and harnessed worldwide across the history to date.

2. MSc. Reservoir Geosciences and Engineering. 2013 Institut Français du Pétrole - IFP School. Paris, France. GPA: B+ Degree work: Pre-feasibility and technical assembly of reservoir engineering oriented to the future implementation of CO2 injection at the sector model of the Cardales Field in Colombia (Qualification: B+). Project Abstract: The Project consisted of the creation of a static model in PETREL RE Software of the Cardales Field

(located in Middle Magdalena Valley Basin – Colombia), the generation of the equation of state in PVTi Software and the properties population, history match and forecast of the simulation dynamic model simulation in ECLIPSE 300

(Schlumberger) to evaluate the pre-feasibility of injection of CO2 into the reservoir as an enhanced oil recovery method. This project was sponsored by ECOPETROL SA (Colombian Petroleum Company) and currently is the model used to evaluate this method under different scenarios, risks and uncertainties into the ECOPETROL Fields in Colombia. 3. Specialization in Project Management. 2011.

Universidad Escuela de Administración de Negocios- EAN. Bogotá, Colombia. GPA: 90/100 Degree work: Technical-economic pre-feasibility for the creation of an oil services company (Qualification: 80 / 100). Project Abstract: The Project is called Final Investigation Report by the University and the knowledge acquired throughout the program was put into practice, requiring the real application under a real scenario regarding the implementation of an author s idea. This work consisted in the creation of a company (CCS Company Man Ltda) whose objective was to offer the supply service of technical personnel to perform functions as a boss of well or normally known as Company Man, service sub-contracted by the operator’s companies of oil fields for Represent them and assist them in drilling both development and exploratory wells.

4. Diploma in Production of Heavy Oils.2008.

Universidad Industrial de Santander – UIS. Bogotá, Colombia. GPA: Approved. 5. BSc. Petroleum Engineering (Hons). 2001.

Universidad Industrial de Santander –UIS. Bucaramanga, Colombia. GPA: 4.18 / 5.0. Cum Laude Student. Degree work: Analysis and evaluation of the variables and operation conditions of the Ballena gas dehydrator plant

(Qualification: 4.8 / 5.0). Published article in the Technical Experiences Magazine of the Universidad Industrial de Santander UIS, Bucaramanga (Colombia), 2002.

Project Abstract: The Project included an integral evaluation of the current operating conditions of the Ballena gas dehydrator plan located in La Guajira-Colombia to simulate the process in Hysys Software generating the recommendations required to get an optimum process regarding the feed fluid, rates and vessel design recommendations. The project was sponsored by La Empresa Colombiana de Gas ECOGAS (Gas Colombian Company) along with the Gas Research Center (CIG: Centro de Investigación del Gas (in Spanish)), achieving an objective implemented nowadays in The Ballena Plant with very good results. PROFESSIONAL EXPERIENCE

1) ADNOC Onshore – Abu Dhabi, UAE

Senior Reservoir Surveillance and Monitoring Engineer, Apr. 2015 to Current

• Support the reservoir strategy to maintain the sustainable production for Thamama reservoirs, achieving the target expected by shareholders, foreseeing, evaluating and mitigating operational risks and uncertainties.

• Coordinate BuHasa Reservoir Team to implement IRM (Integrated Reservoir Management) framework as a methodology, strategy and dynamic tool for following up, development of a better reservoir understanding and detecting enhancement opportunities. This was awarded as a milestone by headquarter and implemented in all branches.

• Evaluate the project continuity of different plateau scenarios through water injection into the oil pool as pressure support and secondary recovery method (and miscible gas as a tertiary recovery method) focused on achieving the highest recovery factor expected, through the proposal of new strategies implemented into the Field Development Plan

(new technologies applications and new scheme of production/injection fluids).

• Design and follow up of strategies to monitor the reservoirs, harnessing all the available data and optimizing the resources and new requirements for this aim, without jeopardizing the operation continuity and the volumetric targets, honoring the reservoir management and shareholders guidelines, and achieving the production commitment.

• Budget optimization and economical assessments (CAPEX/OPEX) for scenarios with their contingency plans, aligned with corporate strategy, being highlighted here the FDP (Field development Plan), the continuous adjusted 5-Years BP

(Business Plan) and the RMP (Reservoir Monitoring Plan).

• Research/investigate, review, deal with providers, evaluate (technical and economically), justify, schedule, implement, monitor and evaluate new growth opportunities related to IOR (gas/water shutoff, artificial lift, intelligence completions, new well’s architecture) / EOR techniques.

• Work closely across all disciplines (operations, facilities, production optimization and petroleum engineers, business development and the reservoir multidisciplinary team) and stakeholders to formulate and implement integral development plans, for existing and new investments (CAPEX/OPEX) in line with corporate strategy.

• Research, benchmark, and implement international standards (SOP: Standard Operation Procedures) to organize and homologate processes, maximizing economic and social value, adopting them as company development policies.

• Develop business strategies and evaluate opportunities to accomplish outstandingly the shareholders’ targets.

• Participate actively in peer reviews and technical committees to foresee strategies and validate gates across the development projects’ life cycle.

• Develop young staff carrying out reservoir engineering tasks and help build their competencies. Key Achievements in ADNOC Onshore:

• Optimization of Field development plan of TH_KH_2 & TH_LK_3 reservoirs, through the research of the most suitable applications and new technologies (LEL, Smart Completions, Flofuse, MRC and new well’s architectures), and their implementation along with their proper evaluation reaching committed targets, proper sweep balance injection/production, homogeneous withdraw and costs efficiency.

• Outstanding benchmarking of the RMP (Reservoir Monitoring Plan) design for EOR (CO2/WAG) project to make a feasible 20% increase in the recovery factor in Thamama B reservoir – Buhasa Field (Abu Dhabi).

• Implementation in Buhasa Field of the MFR (Major Field Review) and the IRM (Integrated Reservoir Management) methodologies to raise ADNOC processes to high international standards of the Oil & Gas industry.

• Significant CAPEX/OPEX optimization by implementing the PEI (Production Efficiency Improvement) project in Buhasa Field (UAE) focused on bottleneck identification to optimize FSOPR (Field Sustainable Oil Production Rate), enhance the FDP (Field Development Plan) and improve the whole system efficiency.

• Reserves incorporation and production plateau extension by optimizing the field development plan strategy through the implementation of 5 spot pattern waterflooding project in Thamama B reservoir. 2) ECOPETROL SA – Bogotá, Colombia

Senior Reservoir Development & Projects Engineer, Jun. 2011 to Mar. 2015 Reservoir Engineer, Jun. 2006 to May 2011

• Leader implementer of the Field development plan for the biggest Heavy Oil Field of ECOPETROL SA (including water management through disposal strategy), focused on reaching efficiently the highest production of Colombia’s history, through a multidisciplinary integration and formulation of the short and medium-term production strategy

(portfolio).

• Redevelop Yarigui-Cantagallo and Casabe as mature fields using selective production/injection and developing small sedimentary structures discovered by appraisal wells along with the same Magdalena Basin geological trend (Garzas, Peñas Blancas and Casabe Sur Field).

• Evaluating/screening done for the project of IOR/EOR techniques and implementation starts of waterflooding pilots for the fields located into the middle of Magdalena Valley Basin.

• Develop the simulation model as a pilot in Cardales Field to evaluate the CO2 injection to implement this tertiary recovery method in the Magdalena Valley Fields.

• Audit and Reserves (SEC) estimating through decline curve analysis and economical evaluations, plus further support given by well/reservoir modeling (integration of performance analysis with G&G and PTA interpretation).

• Implementation of multilateral wells technology in Castilla Field to improve the drainage area by contacting different layers simultaneously and increasing the recovery factor reaching bypassed oil. 3) ECOPETROL S.A. – Villavicencio, Colombia

Petroleum Engineer, Jun. 2005 to May. 2006

• Identify new business opportunities and well recommendations for work-over based on the continuous synergy of integration among Projects, Operations, Facilities, Production and Reservoir departments. 4) ECOPETROL S.A. – Villavicencio, Colombia

Operations Engineer (Workover Company Man), Jul. 2003 to May. 2005

• Well Planning, Contract Auditor and direct responsibility of personal and operations.

• Working as a Company Man for Initial Completions and Work-over such as wells maintenance, wells redesign, slickline and wireline operations, logging, cementing, milling, fishing and shooting.

• Costs and times optimization through appropriate planning, timely logistic coordination, HSEQ standards maintained, use of decision tree applied as a tool for decision-maker and following a detailed time statistical per activity to achieve with good score all operation KPI s.

5) ECOPETROL S.A. – Villavicencio, Colombia

Production & Optimization Engineer, Feb. 2002 to Jun. 2003

• Well performance evaluation (nodal analysis) and artificial lift design in Apiay - Suria – Reforma - Libertad Fields.

• Involved in the follow-up of root cause failure analysis, identifying the underlying issues behind the artificial lift systems, being detected, and allowing the development of some enhancements by the providers at structure level and material selections during facing sand issues and lifting of extra-heavy oil, which also was reflected in proper preventive maintenance with a good reduction in OPEX for the Company.

• Achieve successfully the production target by optimizing ESP (Electro Submersible Pumps) systems, based on meticulous statistical monitoring through the methodology named “Run Life and Mean Time Before Failure (MTBF)”.

• Measurement and quality check of treatment and fluids disposition with government regulations into the batteries. Key Achievements in ECOPETROL SA:

• Maximize the profitability in terms of production in Castilla Field (Colombia) through an implemented task force that included new technologies application (intelligent completions) and a large number of work-over and drilling opportunities (multilateral wells).

• Exceptional production increase (4 folds) through a re-development of 2 brown fields (Yarigui-Cantagallo and Casabe in Colombia) using selective production/injection technology and waterflooding implementation.

• Discovering of 1 small new field (Casabe Sur) and reactivation of 2 abandoned fields (Garzas & Peñas Blancas) in Colombia through appraisal wells along the Middle Magdalena Basin, where I acted as a reservoir engineer of the identifying and planning team.

• Generation of the initial simulation model used to evaluate CO2 injection as a pilot at Cardales Field (Colombia).

• Successfully production target achieved and optimizations of ESP (Electro Submersible Pumps) performance in Apay- Suria-Reforma-Libertad Fields (Colombia) based on meticulous statistical monitoring through the methodology named

“Run Life & Mean Time Before Failure (MTBF)”, reaching improvements in material and internal part designs of ESP. 6) Fundación Universidad de América – FUA. Bogotá, Colombia University Teacher (Part-Time), Feb. 2008 to Nov. 2010

• Satisfyingly placed all taught students between 2008 and 2010 into the professional world: Provide proper guidance along the thesis process to assigned students and share knowledge (training/mentoring) on the subjects related to Petroleum Engineering Program for 8th and 9th semesters of Petroleum Engineering: Reservoir Generalities (Reservoir I), Waterflooding (Reservoir III), Workover Operations (Production I) and Artificial Lift Design, Nodal Analysis and Production Control (Production II).

7) Centro de Investigación del Gas (CIG) (Gas Research Center). Research Assistant. Bucaramanga, Colombia, Jan. 2001 to Jan. 2002

• Engineering assistant in the gas plants simulation segment, plus giving support in the project's logistics area. Apr. 2015 – Current

ADNOC

Snr. Surveillance Eng..

Jun. 2011 – Mar. 2015

ECOPETROL SA

Snr. Reservoir & Projects Eng.

Jun. 2006 – May. 2011

ECOPETROL SA

Integration & Projects

Eng.

Jun. 2005 – May. 2006

ECOPETROL SA

Petroleum Engineer

Jul. 2003 – May. 2005

ECOPETROL SA

Operations Engineer

Feb. 2002 – Jun. 2003

ECOPETROL SA

Production Engineer

Feb. 2008 – Nov. 2010

FUA (Part Time)

University Teacher

Jan. 2001 – Jan. 2002

CIG

Research Assistant

WORK RECORD SUMMARY

SELECTED PUBLICATIONS

1) Improving oil mobility in Castilla a Colombian heavy oil field thru the use of nanotechnology (IBP1631_14). Rio Oil & Gas Expo and Conference 2014. ECOPETROL SA. Sept.-2014. 2) Geosteering of horizontal wells like a strategy of development for the heavy oil field Castilla in Colombia. VIII INGEPET 2014 (EXP-CP-ER-19-E).

3) New technologies about electric logs impulse and empower mature fields. Casabe field-Colombia. R. Jimenez, Schlumberger, C. Leal, Ecopetrol. ACIPET. 2011.

4) Well completion strategy in a mature field with water injection. C. Restrepo, R. Jimenez, A. Azancot, R. Rubiano, W. Gambaretto, A. Suter, Schlumberger, C. Leal, O. Agudelo, M. Amaya, Ecopetrol. ACIPET. 2011. 5) Experimental evaluation of the strategy for the implementation of production water injection in Casabe Field, actually under secondary recovery by soft water injection. Z. Pachón, C. Leal, M. Escobar, Ecopetrol S.A. XIV Congreso Colombiano del Petróleo 2011.

REFERENCES

1) Ph.D. Mark STEWART. Lecturer at University of Aberdeen (UOA). Scotland France. Mobile: +44-781-***-***. Email: adq0ey@r.postjobfree.com (MSc. Thesis Director in Scotland). 2) Ph.D. Maria AGUILERA. Head of International and business development. IFP School. France. Mobile: +33-647- 808-385. Email: adq0ey@r.postjobfree.com (MSc. Thesis Director in France). 3) Ph.D. Lina RUIZ GOMEZ. Head of Electrical Systems and New Technologies. ENGIE Green - France Mobile: +33-632-***-***. Email: adq0ey@r.postjobfree.com (ECOPETROL SA Former Coworker). 4) Ph.D. Dario DE BENEDICTIS. Senior Project Manager. Ministry of Industry and Advanced Technology - UAE. Mobile: +971-**-***-****. Email: adq0ey@r.postjobfree.com (ADNOC Former Coworker).

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