The complete package of equipment, personnel, and services required to drill a well, which determines the scope of work subcontractors are hired into — whether supplying a single service line or multiple integrated components across the operation.
Drilling Spread
Related Terms
Compression Station
IndustryA facility that boosts natural gas pressure to move it through pipelines over long distances. Subcontractors are frequently mobilised here for maintenance, mechanical work, and equipment inspections. These sites often require specific safety certifications and site orientations before work begins.
Unconventional
IndustryRefers to oil and gas extracted from tight rock formations requiring hydraulic fracturing or horizontal drilling. For subcontractors, unconventional work typically means large multi-well pad sites with high crew and equipment demands. Expect fast-paced rotational schedules and specialised service requirements.
Field Ticket
IndustryA document created in the field that records work performed, equipment used, materials consumed, and time spent. Field tickets are the basis for invoicing and must typically be approved by the customer before payment.
Master Service Agreement (MSA)
IndustryA contract between an operator and a service company that establishes the general terms and conditions for all future work. Individual jobs are then executed under work orders or AFEs referencing the MSA.
AFE (Authorization for Expenditure)
IndustryA budgeting document used in oil and gas projects that outlines expected costs and seeks approval before work begins. Subcontractors often work under AFEs issued by operators.
Embankment
IndustryA 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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