Production Liner

A state-owned oil producer that controls exploration and production within its country. NOCs often require local content compliance, affecting subcontractor hiring and procurement. Payment cycles and approval chains can be longer than with private operators.

A processing facility that separates mixed natural gas liquids into individual products like propane, butane, and ethane. Subcontractors often work these sites for maintenance, turnarounds, and equipment servicing. Fractionators operate continuously, so field crews should expect shift-based schedules and strict hot-work permitting.

A surface removal process where a rotating drum grinds down asphalt or concrete without heat. Subcontractors use it for road rehabilitation, pad preparation, and surface levelling on well sites or construction projects. Reclaimed material is often reused, reducing disposal costs.

The final phase of connecting a well or facility to live production infrastructure, including pipelines, separators, and metering equipment. For subcontractors, it typically means intensive, time-sensitive scope with strict sequencing requirements. Delays can trigger penalties, making accurate scheduling and crew readiness critical.

A well drilled after a discovery to confirm the size and viability of a reservoir. For subcontractors, appraisal programmes signal short-term scopes before a full development decision is made. Mobilisation windows are often tight and contracts may be limited to single-well terms.

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

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.