Oscar Ernesto López Ditta
Midland
Summary
Results-driven Heavy Equipment Mechanic and Quality Assurance Technician specializing in oilfield and heavy equipment operations. Expertise in diagnostics, maintenance, quality control, and repair of mechanical, hydraulic, electrical, and powertrain systems. Proven ability to enhance equipment reliability, minimize downtime, and support safe, efficient operations. Experienced with Tier 2 frac pumps, DGB units, blenders, generators, FORCE E-Fleet systems, diesel engines, and field service environments.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Shop Mechanic I – (QA)
ProPetro Services
01.2024 - Current
- Perform QA/QC inspections, diagnostics, repairs, and operational testing of Tier 2 frac pumps, DGB units, blenders, and FORCE E-Fleet systems.
- Execute controlled load tests to validate performance, reliability, and operational readiness before field deployment.
- Troubleshoot complex mechanical, electrical, and hydraulic failures under operating conditions.
- Analyze equipment performance data to identify system deficiencies and recurring failure patterns.
- Complete detailed test reports, repair documentation, and maintenance records in accordance with company standards.
Preventive Maintenance Technician
ProPetro Services
01.2022 - 01.2024
- Performed preventive maintenance and field-service support on frac pumps, blenders, generators, and related oilfield equipment.
- Conducted inspections, oil changes, filter replacements, hydraulic system checks, and fluid services.
- Utilized diagnostic software and testing equipment to evaluate engine, fuel, aftertreatment, and electrical systems.
- Maintained accurate maintenance records and service reports to support compliance and asset reliability.
- Helped maximize equipment availability and reduce unplanned downtime in field operations.
Truck Chasis Mechanic
OMMA Trucking Inc.
01.2020 - 01.2022
- Diagnosed and repaired braking, suspension, wheel-end, air, and lighting systems on commercial vehicles.
- Replaced hub assemblies, bearings, seals, brake components, air valves, springs, torque rods, and related components.
- Performed routine inspections to ensure DOT compliance, safety, and vehicle reliability.
- Managed repair documentation, parts inventory, and maintenance records.
Education
Economista - B. S. in Economics
Universidad del Zulia
VenezuelaHigh School - undefined
Escuela Manuel Felipe Gutiérrez
VenezuelaSkills
- Diagnostics & Troubleshooting
- Preventive Maintenance
- Hydraulic Systems
- Diesel Engines
- Oilfield Equipment Maintenance
- HSE Compliance
- Quality Assurance & Inspection
- Electrical Systems
- Technical Documentation & Reporting
Certification
- Electrical Diagnostics I – Tritech Enterprises (2025)
- Electrical Diagnostics II – Tritech Enterprises (2025)
- Basic Hands-On Hydraulic Training & Troubleshooting – Evolution Motion Solutions (2025)
- Advanced Hands-On Hydraulic Training & Troubleshooting – Evolution Motion Solutions (2025)
- TH55 Petroleum Transmission Training – Warren CAT (2025)
LANGUAGES
Spanish (Native)
English (Intermediate)
Timeline
Shop Mechanic I – (QA)
ProPetro Services
01.2024 - Current
Preventive Maintenance Technician
ProPetro Services
01.2022 - 01.2024
Truck Chasis Mechanic
OMMA Trucking Inc.
01.2020 - 01.2022
High School - undefined
Escuela Manuel Felipe Gutiérrez
Economista - B. S. in Economics
Universidad del Zulia