Processing Capacity

A formal notice from an operator or prime contractor inviting subcontractors to express interest in an upcoming project or contract. It typically outlines scope, required certifications, and submission deadlines. Responding early can improve your chances of being shortlisted for the work.

A planned shutdown of a facility for maintenance, inspection, and repair. Turnarounds often require large numbers of contractors and subcontractors working intensive schedules.

The segment of the oil and gas industry involved in exploration and production (E&P). Includes drilling, completions, and well operations.

A real-time data acquisition process used during directional drilling that transmits downhole measurements — such as wellbore trajectory, formation data, and tool orientation — to surface crews without interrupting operations. For subcontractors, MWD services represent a specialised scope of work requiring certified technicians and dedicated equipment, often billed as a separate line item on drilling contracts.

A company that provides specialized services to oil and gas operators, such as drilling, completions, workover, transportation, or maintenance. Also called oilfield services (OFS).

A central staging location where crews, equipment, and materials are coordinated before deployment to remote job sites. For subcontractors, the hub determines mobilisation routes, laydown areas, and logistical costs. It often serves as the main point of contact between the prime contractor and field crews.

What Is an AFE in Oil and Gas and How Does It Affect Subcontractor Payments?

An AFE (Authorization for Expenditure) controls every dollar spent on an oilfield project. Learn how it affects your billing, change orders, and cash flow as a subcontractor.