Leadership

Meet the people behind Mazzard Energy

Complementary expertise in subsurface, drilling, project delivery, and digital energy.

Gibran Cerezo

Founder & Principal Consultant

Gibran Cerezo is a petroleum geologist and the founder of Mazzard Energy, bringing over 20 years of international experience across subsurface interpretation, reservoir characterization, and enterprise geoscience software. His background spans technical consulting for national and international operators, technical sales leadership in enterprise software, and a postgraduate specialization in data science and business analytics. At Mazzard Energy, he leads engagements that connect subsurface technical depth with digital transformation and data-driven decision-making for E&P operators and energy technology companies.

Areas of specialization
22+ years of international upstream subsurface experienceEnterprise geoscience software & technical sales leadershipPost-graduate certification in Data Science & Business Analytics (UT Austin)Bilingual/trilingual technical delivery across Latin America & the U.S. (EN/ES/PT)
Experience

20+ years across PDVSA, Halliburton, and Aspen Technology in Venezuela, Brazil, Argentina, and the U.S.

Value to clients

Bridges subsurface technical depth with commercial and digital strategy, helping teams turn complex geoscience data into confident decisions.

Dorys Mayo

Senior Drilling Engineer & Project Manager

Dorys Mayo is a petroleum engineer with over 20 years of international drilling experience across Venezuela, Brazil, and the United States. She specializes in directional, horizontal, and multilateral well design, and pairs that field-tested drilling background with modern project management practice — Agile and Scrum delivery, KPI tracking, and cross-functional coordination built through recent project analyst and Product Owner work. At Mazzard Energy, she anchors the drilling and well delivery advisory practice, bringing structured project controls to technical engagements.

Areas of specialization
20+ years of international drilling engineering experience (Venezuela, Brazil, U.S.)Directional, horizontal, multilateral & cluster well designLandmark drilling applications: Compass, WellPlan, WellCat, CasingSeat, StressCheckOnsite technical leadership on PDVSA and Petrobras drilling programs
Experience

20+ years across PDVSA, Halliburton, and multinational project delivery in Venezuela, Brazil, and the U.S.

Value to clients

Brings structured drilling engineering discipline and modern project controls together, helping technical and management teams stay aligned from planning to delivery.

Company and employer names above reflect prior professional experience. They are not current clients, partners, or endorsers of Mazzard Energy.