BIM (Building Information Modelling)

A company hired by a general contractor or directly by an operator to perform a specific portion of work. Subcontractors often specialize in particular services or trades.

A large vertical vessel at refineries and gas plants that separates hydrocarbons into usable products like propane, naphtha, and diesel. Subcontractors are frequently called in for turnaround maintenance, inspection, and refractory work on these units. Access planning and confined space protocols are critical for any scope inside the tower.

A power generation setup where waste heat from a gas turbine is reused to produce additional electricity via a steam turbine. Subcontractors working these facilities must be prepared for more complex systems and stricter safety protocols. Maintenance scopes are typically broader, covering both turbine types.

Coastal or tidal waterway areas where marine and land-based field operations intersect. Subcontractors working tidewater zones often face dual regulatory requirements and tidal scheduling constraints. Mobilisation windows and equipment access depend heavily on tidal cycles.

A non-destructive field technique used to examine the microstructure of in-service metal components without removing them. Technicians apply a softened acetate film to a polished surface, then analyse the hardened impression under a microscope. Subcontractors use it to assess weld integrity, creep damage, or material degradation on piping and pressure vessels.

The installation, calibration, and maintenance of measurement and control devices such as gauges, transmitters, and sensors. Subcontractors are often scoped specifically for instrumentation work, requiring certified trades and precise documentation. It is a common standalone discipline on large oil and gas and industrial construction projects.

How Operator Mergers and Acquisitions Affect Your Subcontract Agreements

When operators merge, get acquired, or sell assets, subcontractor agreements are caught in the middle. Learn how M&A activity affects your MSA, payment terms, vendor status, and what to do before, during, and after a deal closes.

How Rig Count Trends Affect Subcontractor Demand and What to Do About It

Rig counts are the earliest signal of where field service work is heading. Learn how to read drilling activity trends, anticipate demand shifts, and position your crew before the phone stops ringing.

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.