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Industry Glossary Term

Back-To-Back Well Program

A drilling schedule where wells are spaced consecutively with minimal downtime between completions. For subcontractors, it means sustained mobilisation of crews and equipment across multiple well sites. Expect extended contract durations but also compressed turnaround times between locations.

Related Terms

Workover

Industry

Operations performed on an existing well to restore, maintain, or improve production. Includes activities like recompletions, artificial lift installation, and remedial cementing.

Oilsands

Industry

Bitumen-rich deposits in northern Alberta requiring large-scale extraction and upgrading operations. For subcontractors, oilsands projects involve extended scopes, remote site conditions, and strict client safety programmes. Work is typically tied to major operators like Suncor, CNRL, or Imperial Oil.

Modular Camp

Industry

A prefabricated, relocatable accommodation facility used to house workers on remote oil & gas or construction sites. Units are shipped and assembled on-site, then dismantled when the project ends. Subcontractors may bill camp costs separately or include them in their overall project pricing.

Sequencing (construction)

Industry

The planned order in which construction tasks must be completed before the next trade can begin work. Subcontractors depend on accurate sequencing to schedule crews and avoid costly downtime. Delays in one phase can push back your mobilisation and affect your invoicing schedule.

Failure Assessment Diagram (fad)

Industry

A FAD is an engineering tool used to assess whether a crack or defect in a component is safe to operate or requires immediate repair. Subcontractors use FAD assessments to support fitness-for-service decisions on pressurised piping, vessels, and structural welds. Results directly influence repair scopes, shutdown planning, and liability on field service contracts.

Headframe

Industry

A structural tower erected over a mine shaft to support hoisting equipment and guide cables. Subcontractors working near headframes must coordinate lifts and personnel movement carefully. Access restrictions and load limits are strictly enforced on-site.

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