Marine Construction

A volume measurement equal to one acre of surface area filled one foot deep, roughly 1,233 cubic metres. Common in water management contracts for tailings ponds, frac water storage, and site remediation. Subcontractors may be scoped and billed based on acre-feet of material moved or treated.

A specialised ship used to perform maintenance, repair, or remediation work on subsea wells and pipelines. Subcontractors are often mobilised to these vessels for ROV operations, well work, or equipment installation. Scheduling and access are tightly controlled by the operator.

A subcontractor specialising in underground utility or pipeline installation without open excavation. Methods include HDD (Horizontal Directional Drilling) and pipe bursting. These firms are commonly hired on oil and gas, municipal, and construction projects where surface disruption must be minimised.

A bridge or structural design where a curved arch is connected to a horizontal tension member, preventing the arch from spreading. Subcontractors may encounter tied-arch structures on pipeline crossings, access bridges, or heavy industrial sites. Rigging, lifting, and load planning must account for the unique stress distribution in these structures.

A recompletion involves re-entering an existing well to modify or replace the completion for a new producing zone. For subcontractors, it means shorter mobilisation windows and specialised wellbore intervention scopes. Crews should expect tight scheduling alongside active production operations.

The company or entity proposing and owning a project, such as an operator or developer. As a subcontractor, the proponent is often the ultimate client driving project requirements and approvals. Understanding who the proponent is helps clarify scope expectations and contract obligations.

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.