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Industry Glossary Term

Well Pairs

Two horizontal wells drilled together — one injector, one producer — used in SAGD (Steam-Assisted Gravity Drainage) operations. Subcontractors often mobilise crews and equipment to service both wells simultaneously. Expect back-to-back work scopes and coordinated scheduling across a shared pad site.

Related Terms

Tank Farm

Industry

A designated site containing multiple large storage tanks for oil, gas, or chemicals. Subcontractors frequently perform inspection, maintenance, and cleaning work at these facilities. Access permits and confined space certifications are typically required on site.

Substrate

Industry

The base material or surface that a coating, lining, or treatment is applied to, such as steel pipe, concrete, or wood. Subcontractors must assess substrate condition before starting surface prep or application work. Poor substrate quality can affect adhesion, warranty, and job acceptance.

LOI (Letter of Intent)

Industry

A written commitment from a client indicating they plan to award a subcontractor a contract. It allows work or mobilisation to begin before the formal contract is signed. LOIs are not always legally binding, so subcontractors should clarify payment obligations before proceeding.

Mud Logging

Industry

A well-site service that monitors drilling fluid returns to detect hydrocarbons and analyse formation data in real time. Subcontractors provide specialised technicians and instrumentation units for this work. It is commonly scoped as a standalone package within a drilling contract.

Dry Gas

Industry

Natural gas composed almost entirely of methane, with minimal liquid hydrocarbons. Subcontractors working dry gas sites face simpler handling requirements but often leaner margins than wet gas projects. Expect lighter equipment specs and fewer fluid management scopes.

Embankment

Industry

A raised earthen structure used to support roads, pipelines, or equipment pads on unstable or uneven terrain. Subcontractors often work on or around embankments during site prep, grading, and pipeline installation. Stability assessments may affect crew access and equipment positioning.

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