Life Extension Drydock

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.

A form of metal cracking caused by hydrogen sulphide (H₂S) exposure under stress, common in sour gas environments. Subcontractors must use SSC-resistant materials and equipment rated for sour service on these sites. Non-compliant tools or components can fail catastrophically, creating serious liability and safety risks.

A water-soluble polymer additive used in drilling fluids to control fluid loss and stabilise boreholes. Subcontractors handling mud systems must store and mix PAC carefully, as improper use affects drilling performance. It is commonly specified in drilling programmes, so field crews should follow the mud engineer's exact dosage instructions.

A long-term contract where a subcontractor provides scheduled upkeep and repairs on a client's major assets or facilities. Work scopes, pricing, and mobilisation terms are typically locked in advance. These agreements offer subcontractors predictable revenue but may limit flexibility to take on other work.

A foundation pile driven or screwed into soil without removing material, pushing ground laterally to create a tight fit. Common in oil and gas facility and construction site foundations. Subcontractors should confirm soil displacement specs early, as ground conditions directly affect equipment selection and crew scheduling.

The physical linking of two or more systems, pipelines, or electrical networks at a shared tie-in point. For subcontractors, interconnection work often requires strict coordination with the prime contractor and operator. Scope boundaries and handoff responsibilities must be clearly defined in your subcontract.

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.