Field Operations Gas

I. Area

Oil and Gas Production Companies-

Area: Technical and Operative Management.

II. Specialization and Field of Experience

Twenty -25- years of Experience In:

Knowledge of the different Oil & Gas field operations and practices including well services, Drilling & Work over, drilling fluids, casing design, well log analyses, artificial lift, well completions, work over, stimulation, core analyses, well test analyses, and fluid properties techniques.

Skills: Production and Reservoir Management, team player/builder, participate in single or multi-well studies in order to maximize the well production, good interpersonal abilities, able to communicate effectively at all levels and self-motivation to achieve breakthrough performance.

Achievements:

- Re-acondition of Producción petroleum wells in: Costa Oriental Maracaibo Lake Venezuela (Petroleum reservoirs of Cabimas, Tia-juana, Lagunillas, Bachaquero, Menegrande, Concepción, Casigua-El cubo) and Colombia (Petroleum reservoir of Velásquez, Palagua, Cocorna, Centro, Tibu, Casabe, Cantagallo, Cicuco, Rio Zulia, El Difícil).

- Enhance the design and programming quality of work over and well completion activities by optimizing proven techniques and practices. In addition, implement new technology by innovative operating methods that contribute to the development and upgrading the process standards in the oil wells.

- Optimizations of designs to improve the well production systems.

- Design and implementing of proven techniques to develop new under-ground operations procedures to work over activities (Drilling, Casing, electrical records and data, chemical stimulation, special casing design for gas and water injection wells), Secondary recover, and stimulation of petroleum reservoir as well evaluation and Optimization of gas plants: Including equipment evaluation and oil production process.

- Outgoing results in Managing all the activities related to pipe and Line pipe installation, superficial equipment, oil stored tanks and distribution systems.

- Pointed as one of the best Petroleum Engineer in Ecopetrol and promote as an Operation and Administrative Manager Casabe and Cicuco.

- Merit Ecopetrol S.A Colombia certification due High responsibility, patriotism in emergency situation, Professionalism, for best working in team and high spirit of responsibility and collaboration.

- UNIVERSIDAD DE SANTANDER- UIS-: In 1994 pointed as Special member Investigation and Research for Latin-American countries in the Scientific and Technical fields-

- In 1991 High pointed as one of the best professionals for the contribution to the Colombian Petroleum Industry.

III. Professional Experience

3.1. Since October 1975 to September 1979. Company: COLOMBIAN PETROLEUM COMPANY-ECOPETROL

Position: Petroleum Engineer

Description: Perforations, design analysis, maintenance and recovering of production wells.

3.2. Since March 1980 to August 1983. Company: HELMERICH & PAYNE of VENEZUELA C. A. Maracaibo Lake

Position: Petroleum Engineer and Supervisor of Perforations

Description: Perforations, workover, maintenance activities in the field.

3.3. Since April 1985 to December 1997 Company: ECOPETROL COLOMBIA

Position: Professional II/ senior Eng. Production Department. Production Field: Casabe Santander

Description:

- Manage the technical and administration activities in the field/ reservoir

- Plan, program and coordinate the execution of well activities on the rigs in line with the internal and external customers

- Operational, Health, Safety and Environmental standards.

- Accountabilities Issues, Plan, program and coordinate the execution of well to deliver quality products on time and within budget.

-Prepare the engineering design of wells in conformance with the Corporate/Functional Code of Practices and Procedures, including structured risk analysis for high exposure operations.

3.4. Since January 1998 to December 2004 Company: ECOPETROL S.A COLOMBIA

Position: Operation and Administrative Manager – Five Production Fields

Description:

-Management, plan and conduct evaluations and provide advice on engineering operations for the extraction of petroleum or natural reservoirs, develop oil and gas reserves and to maximize recovery and profit, determine methods of optimizations, plan ways to transport the oil and reserves, the use of downhole pumps, gas lift systems, management personal and operating equipment, In addition, issues related to the treatment of oil to remove sediment and water, conduct operations and activities in accordance with environmental policies and codes, implementing a work safely procedures.

-Coordinate the programming, gathering, reporting and distribution of well data; evaluate the quality of well engineering data and participate in the quality evaluation of reservoir as well Coordinate the activities and monitor the technical performance of Service Contractors against agreed indicators; measure the quality and cost effectiveness of the services and products delivered by the Service Contractors.

- Inspection and evaluation of Production, casing, drill, and line pipe -Internal and External coated - as well production well equipment.

3.5 JANUARY 2005 -DECEMBRE 2021

EMPRESA INSERPETROL LTDA (Company of Petroleum Engineering Services and International Representations of Pipes and Accessories in Fiberglass and Metal Pipes API, casing and tubing. Position: General and Operations Management. With current disposition to attend Petroleum Operations or Projects that merit Administrative, Technical and Operative experience.

3.6 OCTOBER 2008 - JULY 2010.

Company: STS DE LOS ANDES S.A

Position: Superintendent of Operations, based in Bogotá D.C and Operations in El Centro (Santander) for the La Cira-Infanta Project in Barrancabermeja of the Oxy Companies and Ecopetrol S.A. Operations of completion and completion of wells, and activities related to the position of Superintendent as administration and management of personnel in charge to attend the operations in the mentioned Project.

3.7 OCTOBER 2010- JANUARY 2014

Company: Gexdex CSI

Position: Advisor for Ecopetrol in the Completion and Completion of Exploratory and Development Wells, in the Exploratory Projects of Putumayo, Caño Sur (Meta), Huila, Cicuco (Bolívar) and others in the Magdalena Medio.

3.8 FEBRUARY 2014 - MAY 2015.

Company: Consultec International.

Position: Specialist "B" for Ecopetrol in the Completion and Testing Area of exploratory and development wells in the Magdalena Medio fields of Ecopetrol S.A. (Tisquirama San Roque, Cristalina, Casabe), Exploratory Blocks CP09, CP10 and CP11 in the Meta area.

3.9 JUNE 2015 - MAY 2019

Company: ISP-INSERPETROL LTDA- Bogotá – Houston

Position: Operations Management Consulting in Petroleum Engineering Inserpetrol Ltd.-Colombia and Quality Consultant in relation to Petroleum Engineering in ISP Inserpetrol- Houston -Texas. EU

IV. Special Trainings

4.1. TEXAS PETROLEUM CO. – CAMPO VELAZQUEZ

Mud Laboratories, perforation and work- over

4.2. ECOPETROL- CENTRO

Production Control, Reservoir calculations, Statistical Process Control- Production-

4.3. ECOPETROL - CASABE

Pressure in petroleum reservoirs

4.4. HALLIBURTON COMPANY, DISTRITO COLOMBIA, 1987

Formation/Geol. Tests

4.5. ECOPETROL – CASABE 1988

Stimulations Oil and Gas wells (Rike service)

4.6. Schlumberger Surenco, S.A

Interpretation of Petroleum reservoirs profiles

V. Education

High School: Instituto Salesiano “San Juan Bosco “, November, 1967

University: Universidad Industrial Santander (UIS), Profesional Petroleum Engineer, December 1974

Specialization: Universidad EAFIT- Medellín, Management and Administration, November 1993

VI. Languages: Spanish

7.1. Management and Administration:

-Project Management, Quality Control and Quality Assurance, Negotiation, Risk Analysis, Decision Taking, Investment Project for the petroleum industries, Legislations, Negotiation Skills.

7.2. Finances- Finances Studies

7.3. Technical

Prevention of petroleum splits, MIMS tools, Productivity in petroleum companies, Environmental Activities, Emergencies in Petroleum companies, Fire prevention in Oil and gas production line, Instrumentations, Well profiles, Process, interpretation de profiles de well de petroleum, Stimulation of wells, Injectors, Formation tests (DST).

7.4. Computers and Other:

Environmental culture, Microsoft, 7 Habit for the people effectiveness, Manage the time and Creativity at work, - Active participation in Environmental speeches for the petroleum and gas

VIII. References and certifications can be sent according with the company requirements.

Cordially,

DELFIN ANTONIO CALIXTO ZAFRA

03/03/2022

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