Engineer Drilling

IVÁN FERNANDO CASTELBLANCO CASALLAS

Contact: +57-310-***-**** @: ********.************@*******.***

www.linkedin.com/in/ivan-fernando-castelblanco-casallas I. PROFESSIONAL PROFILE.

Petroleum Engineer, candidate to Master in Petroleum Engineering, with experience in the Oil & Gas industry being fully responsible at technical and operational level in oil and gas fields; in more than 50 wells in the last two years. Expert in the implementation of strategies to improve operational efficiencies, cost reduction and improvement of project profitability. Deep knowledge in the areas of drilling, workover and completion, production operations and project management of oil and gas wells in operations such as: drilling of horizontal and highly deviated wells, hydraulic fracturing, gravel packing; swabbing; remedial cementing and handling of ESP, PCP and Mechanical Pumping systems. Experience in handling high performance equipment, managing a technical team of more than 40 people II. PROFESSIONAL EXPERIENCE

Independence Drilling. Workover Operations Supervisor Bogotá, Colombia March 2018 - April 2020 Industry: Oil & Gas

Integral services for the drilling, Workover and well service of oil and gas wells. Customer: ECOPETROL Operation: Workover and Completion Location: Castilla La Nueva Field

- Project management: Development and execution of plan for optimizing time and efficiency, where I managed to reduce a total of 52 well services 14,026 hours to only 30.5 NPT hours, less than 1% of total hours. Responsible for coordination, personnel and equipment assurance during mobilizations (More than 595 hours), maintaining 100% efficiency, always being below the times established by the client; ECOPETROL.

- Team Leadership: Direct supervision of 35 persons, and indirect supervision of 5, always maintaining an adequate synergy for the development of the operation, and without generating conflicts with the communities in the areas of influence of Castilla La Nueva. During my two years of work, in my shifts, there were 0 recordable or disabling accidents.

- Strategy and Business Impact: Generation of a layout prior to mobilization and assembly of equipment, which allowed reducing the cost associated with mobilization of loads (pipe baskets or equipment for specific operations), after the start of operations, reducing payments to third parties by 180 USD per service. In addition, a manifold was manufactured for circulation operations that reduces: time between connections, risk of knocks to personnel, ergonomic risk, contamination in the operation area and deterioration of tools and equipment.

- Operations: Ensure required tools for operation, volumes in tanks, elaboration of pipe tallies and other technical requirements in workover operations

- Reporting: Reporting of all activities to Company man and superintendent of operations of events in the well under guidelines of the operating company.

Interoil Colombia E&P. Workover Engineer Bogotá, Colombia July 2014 - September 2015 Industry: Oil & Gas

Operating company that in association with ECOPETROL, manages fields in the state of Tolima with an average annual production of 1,030,000 Bbl/year

(2015)

Associate: ECOPETROL. Operation: Workover and Well service Location: Campo Maná and Toqui Toqui.

- Project Management: Responsible for the preparation and management of budgets (AFE's) for workover operations. Management and implementation of a change of lifting system from PCP to mechanical pumping and installation of a sand control screen, correcting continuous failure of the well under a strict adjustment of operational parameters, managing to maintain stable production at 21 bbl/day from February 2015 until my departure from Interoil.

- Team Leadership: Leader of 4 crews (24 people) and third-party audit (Bureau Veritas).

- Operations: In charge of the evaluation and implementation of technologies for the optimization of workover operations. Significant reduction in more than 80 well services with 3,265 operational hours and a total of 228 hours of NPT which represents less than 7% of total hours. During this period there were 0 recorded accidents. Efficiencies and impact: 10% reduction in workover costs for Ecopetrol from 46,000 USD to 41,000 USD on average. Reduction of 27% in well services cost (paraffin cuts, circulation) from 11,800 USD to 8,600 USD.

- Replicated savings project in Interoil wells, reducing the average cost of workover from 43,000 USD to 38,000 USD by 11% and the cost of well services (paraffin cuts, circulation) from 13,100 USD to 7,500 USD by 42%.

- Management: Responsible for control equipment, engineering calculations and operational reports (workover) to superintendent and general management.

Reikcon Energy Drilling and Workover Assistant Bogotá, Colombia February 2014 - July 2014 Industry: Oil & Gas

Company that specializes in hiring qualified personnel for the Oil & Gas industry in Colombia.

- Technical Management: For Emerald Energy's projects, in conjunction with Company Man, responsible for investigating technical failures of operating equipment and verifying its certifications, achieving a 0% accident rate.

- Operations: Logistical management of all aspects of flight requests for personnel, passenger and cargo vehicles and mobilization equipment for the operation.

- Reporting: Assist to Well Site Leader with daily operational reports and data capture required from the various service companies, through the use of Open Wells Software. Preparation and processing of Forms 4CR, 5CR and 6CR to the National Hydrocarbons Agency. Report to Operations Management, headquarters and national.

- Team Leadership: In charge of ensuring the correct distribution of activities for 3 crews of 13 people in 12-hour shifts, plus third companies, having personnel spikes in charge of up to 120 workers, depending on the operation. Multicultural team leader, since Emerald Energy and the company that supplied the rig, Chinese-owned Hilong Group, constantly had foreign personnel in the operations. Sinopec International Petroleum Service Operations Coordinator Bogotá, Colombia November 2013 - February 2014 Industry: Oil & Gas

Chinese capital company, belonging to Sinopec Group, dedicated to the rental of equipment for oil and gas extraction

- Project Management: Management of the integral process in drilling projects from the contracting, drilling and completion phase to the elaboration of closing and termination of contracts.

- Operations: Technical support in drilling and workover operations in front of the client operating companies.

- Team Management: Coordination of 3 rigs with a team of more than 30 people in each one.

- Business: Representative of the company for bidding processes corresponding to the awarding of contracts for drilling and well completion.

New Granada Energy Corporation. Assistant Drilling and Workover Engineer Bogotá, Colombia August 2011 - July 2013 Industry: Oil & Gas

Subsidiary company of Sinopec Group in Colombia with presence in the departments of Casanare, Meta and Vichada.

- Well Supervision: Monitor well positioning and the directional plan; ensure that the MWD data used is correct and review the established directional plan with the well supervisor. Assist the well supervisor with daily operational reports and data capture required from the various service companies, through the use of Open Wells Software.

- Reporting: Preparation and processing of Forms 4CR, 5CR and 6CR to the National Hydrocarbons Agency and General Management of the Sinopec Group.

Discovery Energy Services. Operations Engineer Bogotá, Colombia April 2011 - August 2011 Industry: Oil & Gas

III. ACADEMIC TRAINING

Master's Degree in Petroleum Engineering. July 2020 - Present Universidad de los Andes.

Petroleum Engineering. 2006 – 2011

Universidad Industrial de Santander.

- IV. KNOWLEDGE AND OTHER RELEVANT INFORMATION.

Languages: Spanish (native); English (C1) Software: Open Wells R500; Oracle, Office Mobility: National and International Complementary training:

Hydraulic Fracturing, Society of Petroleum Engineers 2020.

Load Lifting Coordinator, Colombia Crane and Services 2020.

Safe Work At Height Coordinator, TSA Trainers. 2018.

Certification in Well Control Drilling - Workover, Training Consultors. 2018.

Diploma in Logistics and International Physical Distribution, Higher Polytechnic. 2016.

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