Steel pipe installed in a wellbore to provide structural integrity and prevent contamination between different geological formations, requiring specialized installation and cementing services that subcontractors frequently provide during drilling operations.
CSG (Casing)
Related Terms
STACK (Sooner Trend Anadarko Basin Canadian and Kingfisher)
IndustryA prolific multi-zone oil and gas play in central Oklahoma covering Canadian and Kingfisher counties. Subcontractors active here support high-density horizontal drilling and completions work. Mobilisation demand can spike quickly, so maintaining local crew and equipment availability is critical.
Legacy Well
IndustryAn older well built to outdated standards that may require specialised remediation, abandonment, or workover services. Subcontractors should expect non-standard equipment configurations and additional compliance requirements. Scope creep and unforeseen costs are common on legacy well projects.
Interconnection
IndustryThe physical linking of two or more systems, pipelines, or electrical networks at a shared tie-in point. For subcontractors, interconnection work often requires strict coordination with the prime contractor and operator. Scope boundaries and handoff responsibilities must be clearly defined in your subcontract.
Fired Heater
IndustryA combustion-based unit that uses burners to heat process fluids in oil and gas facilities. Subcontractors are often called in for inspection, refractory work, burner maintenance, and turnaround servicing. Hot work permits and confined space protocols typically apply.
VDC (Virtual Design and Construction)
IndustryA project delivery approach that combines 3D modelling, scheduling, and cost data into a single digital environment. Subcontractors use VDC to coordinate scope, reduce field conflicts, and plan work sequences before boots hit the ground. Early involvement in VDC workflows can help subs identify clashes, price work more accurately, and avoid costly rework.
Onshore Basin
IndustryA land-based sedimentary region where oil and gas exploration and production activity is concentrated. For subcontractors, basins define your likely work zones, client base, and mobilisation distances. Key Canadian examples include the Western Canada Sedimentary Basin (WCSB).
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