Perforate

The company that holds the rights to develop an oil and gas property and manages day-to-day operations. Operators hire subcontractors and service companies to perform various tasks.

A well drilled in an unproven or lightly tested area to determine whether hydrocarbons are present, often representing shorter-term, high-mobilisation contracts for subcontractors with less predictable follow-on work than development drilling programmes.

A 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.

Expedited delivery service for equipment, parts, or materials to remote job sites. Often used for urgent oilfield deliveries.

A type of subsurface rock layer—primarily limestone or dolomite—that subcontractors may encounter during drilling, completions, or civil excavation work, often requiring specialised equipment, bit selections, or modified drilling programmes due to its hardness and tendency to cause lost circulation events.

A well that is drilled vertically to a certain depth then curved to run horizontally through a target formation, requiring subcontractors to mobilise specialised equipment and crews for extended-reach drilling, completions, and stimulation work that typically involves more complex logistics and longer on-site durations than conventional vertical wells.