A above-ground tracking system used in horizontal directional drilling (HDD) to monitor and guide a drill head's position underground. A handheld receiver walks the surface above the drill path, reading signals from a transmitter in the drill head. Subcontractors use this data to steer accurately and document bore paths for client sign-off.
Walkover System
Related Terms
Lease Road
IndustryA temporary or permanent access road built to service an oil and gas lease or well site. Subcontractors are often responsible for maintaining or mobilising equipment over these roads. Road conditions directly affect trucking rates, equipment wear, and scheduling.
Turnkey Contract
IndustryA fixed-price agreement where the subcontractor delivers a fully completed scope of work for a set sum. You absorb all cost overruns, so accurate estimating and tight cost control are critical. Profit or loss depends entirely on how well you manage execution against your original bid.
Sand Management
IndustryThe process of controlling, monitoring, and removing sand produced alongside oil and gas to protect wellbore equipment and surface facilities. Subcontractors may be hired to install sand screens, separators, or erosion monitoring systems. Poor sand management accelerates equipment wear and increases maintenance callouts.
Competitive Tender
IndustryA formal process where a client or prime contractor solicits bids from multiple subcontractors for a defined scope of work. Subcontractors submit priced proposals and are evaluated on cost, capability, and safety record. Winning a competitive tender typically requires balancing competitive pricing against maintaining viable margins.
FID (Final Investment Decision)
IndustryThe point when a project owner formally approves funding and commits to proceeding with a major project. For subcontractors, FID is the trigger that converts preliminary work into confirmed scopes and purchase orders. Mobilisation planning, crew hiring, and equipment sourcing typically begin after FID is announced.
Physical Oil Price
IndustryThe actual market price paid for real barrels of oil delivered at a specific location, as opposed to futures contract prices. For subcontractors, client budgets and contract award activity closely track physical oil prices. When physical prices drop, project deferrals and rate pressure often follow quickly.
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