FieldNews
Subscribe
Industry Glossary Term

Schedule Compliance

A measure of how consistently a subcontractor completes work within the agreed timeline. Low compliance can trigger penalties, delay progress payments, or affect contract renewal. Tracking it helps field crews identify where mobilisation or scope changes are causing slippage.

Related Terms

Subsea Tieback

Industry

A pipeline or flow line system that connects a new offshore wellhead or satellite field back to an existing production facility or platform, allowing operators to develop remote reserves without building standalone infrastructure. For subcontractors, tiebacks often involve specialised subsea installation, inspection, and maintenance scopes that require certified divers, ROV crews, or subsea engineering support.

MEP (Mechanical, Electrical, and Plumbing)

Industry

Refers to the three core building systems subcontractors install and maintain on construction and industrial facility projects. MEP scopes are often divided among specialised trades, each holding separate contracts or working under a prime contractor. Understanding MEP divisions helps subcontractors define their scope, avoid overlap disputes, and price work accurately.

Trenchless Technology

Industry

Methods for installing or repairing underground pipelines and conduits without open-cut excavation. Common techniques include HDD (Horizontal Directional Drilling) and pipe bursting. Subcontractors specialising in these methods often command premium rates due to reduced surface disruption and specialised equipment requirements.

Land Block

Industry

A designated area of Crown or freehold land divided for exploration and production rights. Subcontractors often mobilise crews and equipment according to which land blocks an operator holds active licences for. Work scopes, access agreements, and surface rights are typically tied to specific block boundaries.

Ngl (natural Gas Liquid) Fractionator

Industry

A processing facility that separates mixed natural gas liquids into individual products like propane, butane, and ethane. Subcontractors often work these sites for maintenance, turnarounds, and equipment servicing. Fractionators operate continuously, so field crews should expect shift-based schedules and strict hot-work permitting.

HDD (Horizontal Directional Drilling)

Industry

A trenchless method used to install pipelines, conduits, or cables beneath obstacles like roads, rivers, or existing infrastructure. Subcontractors are typically engaged for the drill crew, mud mixing, and equipment operation. Scopes are highly specialised and often require certified operators and dedicated HDD spreads.

Stay sharp on field operations

Industry news and insights, delivered to your inbox.

Subscribe to FieldNews
A community project by Aimsio