Rig-Released

The computational reworking of existing 3D seismic survey data to improve subsurface imaging using updated algorithms. For subcontractors, it signals potential new data acquisition contracts as operators reassess drilling targets. It rarely requires field crews but can trigger follow-up geophysical or drilling programmes.

A government auction where energy companies bid on licences to explore or develop publicly owned land. Winning bids signal upcoming drilling and field activity in that area. Subcontractors watch these sales to anticipate new work and mobilise resources early.

A standardised unit of energy measurement that converts different types of oil and gas production into equivalent barrels of crude oil, used by operators to report total production volumes when determining project scope and service requirements for subcontractors.

The point when a project owner formally approves funding and commits to proceeding with a major project. For subcontractors, FID is the trigger that converts preliminary work into confirmed scopes and purchase orders. Mobilisation planning, crew hiring, and equipment sourcing typically begin after FID is announced.

The real-time technique of guiding a drill bit through a target formation using geological data. Subcontractors supporting drilling operations may be called in on short notice as geosteering decisions change well paths. Expect scope adjustments and rapid crew or equipment mobilisation when geosteering is active.

The process of moving equipment and personnel to a job site (mobilization) and returning them afterward (demobilization). Often billed as separate line items.

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.