MacDonald Mokoena

• Designed and supported drilling programs for natural gas exploration and production wells, with a
focus on helium-bearing reservoirs.
• Performed casing, cementation, drilling fluid, and drilling parameter selection based on reservoir
conditions.
• Supervised on-site drilling operations, ensuring compliance with approved programs, HSE
requirements, and contractual scope.
• Developed and implemented SOPs, ITPs, and checklists to improve contractor compliance,
inspection quality, and operational consistency.
• Introduced alternative drilling fluids and percussion drilling methods to reduce formation damage
and enable underbalanced drilling in low-pressure reservoirs.
• Optimized casing selection using API standards for South African geological setting, achieving
significant cost savings.
• Reviewed and optimized BHA configurations to improve borehole contact and gas flow performance.
• Collected and performed monthly statistical analyses of gas flow, reservoir behaviours, pressure and
temperature data, and water/fluid levels to support resource estimation, troubleshoot production
issues, and optimize production outputs.
• Supervised well workover and intervention activities, overseeing acid stimulation operations to
enhance well productivity and restore performance.
• Supported geological logging, flow and flare testing, and data collection for reservoir evaluation.

• Completed structured engineering training across drilling operations, well planning, and site
supervision.
• Assisted with well design, material selection, contractor coordination, and daily drilling reporting.
• Participated in site inspections, toolbox talks, and drilling performance monitoring.