HTHA (High Temperature Hydrogen Attack)

A centralised facility or region where hydrogen is produced, stored, and distributed at scale. For subcontractors, these projects generate long-term work in pipefitting, instrumentation, and equipment installation. Expect strict safety certifications and specialised trade requirements on site.

The ongoing process of ensuring pipelines remain safe, structurally sound, and compliant with regulatory standards. Subcontractors are frequently hired for inspection, maintenance, and repair work tied to integrity programmes. Scopes can include ILI (Inline Inspection), coating repairs, hydrotesting, and fitness-for-service assessments.

A legal right allowing access to land owned by someone else for a specific purpose, such as running pipelines or power lines. Subcontractors must confirm easement boundaries before mobilising equipment or breaking ground. Working outside easement limits can trigger legal liability and project shutdowns.

Completion work performed on wells drilled at extreme horizontal distances from the surface location, sometimes exceeding 3,000 metres laterally. Subcontractors face longer tool-run times, specialised equipment requirements, and increased logistics complexity. Mobilisation planning and crew scheduling must account for extended job durations compared to conventional completions.

A well stimulation service involving the high-pressure injection of fluids — such as fracturing fluid, cement, or acid — into a wellbore to improve production or complete the well; for subcontractors, it represents a specialised, equipment-intensive scope of work that typically requires certified operators, dedicated pump trucks, and close coordination with the primary operator on site.

The planning phase before field work begins, covering scope review, site assessments, and schedule alignment with the GC. Subcontractors are often engaged during this phase to provide pricing, labour forecasts, and constructability input. Early involvement can improve mobilisation timelines and reduce costly scope changes later.

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.