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Industry Glossary Term

Backreaming

Backreaming is the process of enlarging a pilot borehole by pulling the reamer back through while rotating. Subcontractors are often mobilised specifically for this phase on HDD (Horizontal Directional Drilling) projects. Billing is typically tied to footage reamed or hourly rig time.

Related Terms

Bcfd (billion Cubic Feet Per Day)

Industry

A measurement of natural gas flow volume used to describe pipeline or facility throughput capacity. Higher Bcfd ratings signal larger-scale projects, meaning more crews, longer durations, and greater subcontracting opportunities. Subcontractors use this figure to gauge project size when bidding work.

Rod Exchange

Industry

A scheduled swap of sucker rods in a pumping well, typically requiring a pulling unit crew and rod handling equipment. Subcontractors are often engaged on a per-job or dayrate basis to complete the workover. Accurate job scoping matters, as rod counts and depths directly affect mobilisation time and invoicing.

HDPE (High-density Polyethylene)

Industry

A durable, corrosion-resistant plastic used for pipes, containment liners, and fluid transfer systems on job sites. Subcontractors commonly install or tie into HDPE pipelines in water, gas distribution, and environmental remediation scopes. Its lightweight nature reduces handling costs but requires certified fusion welding for pressure-rated connections.

Marine Infrastructure

Industry

Offshore and coastal structures such as platforms, jetties, pipelines, and subsea systems where field work is performed. Subcontractors must hold marine-specific certifications and follow offshore safety protocols. Mobilisation costs and logistics are typically higher than onshore projects.

Directional Services

Industry

Specialised drilling support that steers a wellbore along a planned trajectory rather than straight down. Subcontractors provide MWD (Measurement While Drilling) tools, mud motors, and on-site directional drillers. These crews are typically mobilised on a per-well basis under dedicated service contracts.

Tide Gate

Industry

A one-way valve or flap gate that allows water to drain freely but prevents backflow from rising tides or high water levels. Subcontractors working on coastal or waterfront sites must account for tide gate locations when planning drainage, excavation, or utility work. Ignoring these structures can cause flooding, schedule delays, and scope changes.

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