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IndustryGlossary Term

Pullback

A horizontal directional drilling (HDD) phase where the product pipe is pulled back through a pre-drilled bore. Subcontractors are often paid a separate pullback rate once this milestone is complete. Delays here directly affect crew scheduling and invoice timing.

Related Terms

Alliance Construction Contract

Industry

A collaborative agreement where owners, contractors, and subcontractors share project risks and rewards under a no-blame framework. Subcontractors may receive performance bonuses but also absorb a portion of cost overruns. Transparency in costs and open-book accounting are typically required.

Oil Battery

Industry

A surface facility that receives, separates, measures, and stores crude oil from multiple wells. Subcontractors frequently work at batteries for maintenance, instrumentation, and tank servicing. It is a common site for ongoing field service scopes.

Feed Gas

Industry

Raw, unprocessed natural gas delivered to a processing plant or facility as the primary input. For subcontractors, feed gas specifications determine the scope of compression, treating, and handling work on site. Changes in feed gas composition can trigger scope variations and affect your contract terms.

Debottlenecking

Industry

The process of identifying and removing constraints that slow production or operations on a job site. For subcontractors, this often means short-term scopes to upgrade equipment, piping, or workflows. Debottlenecking projects can generate fast-mobilisation work but typically run on tight timelines.

Deep Foundation

Industry

A structural support system that transfers building loads to stable soil or rock far below the surface, typically using piles or caissons. Subcontractors are often mobilised for drilling, pile driving, or concrete work on these scopes. Expect specialised equipment requirements and strict geotechnical inspection protocols on site.

Rigging

Industry

The equipment and techniques used to lift, secure, and move heavy loads on a job site. Subcontractors must ensure all rigging gear is certified and operators are ticketed. Improper rigging is a leading cause of serious incidents and contract liability.

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