A drilled or excavated hole through soil, rock, or existing structure. Subcontractors are often scoped to complete a specified number of bores per shift. Bore diameter and depth directly affect equipment selection and crew sizing.
Bore
Related Terms
TVD (True Vertical Depth)
IndustryThe straight-line vertical distance from surface to a specific point in a wellbore, regardless of how the well is drilled — subcontractors working on directional or horizontal wells need to reference TVD (not measured depth) when scoping equipment reach, calculating hydrostatic pressures, or verifying work zone depths on service orders.
Vertical Mast Lift
IndustryA type of aerial work platform that raises personnel or materials straight up on a single mast column. Commonly used in confined or tight job sites where boom lifts cannot manoeuvre. Subcontractors must verify operator certifications and load ratings before mobilising.
Radial Conveyor
IndustryA belt conveyor mounted on a wheeled chassis that pivots in an arc to distribute bulk materials across a wide stockpile area. Subcontractors use them on aggregate, sand, and gravel sites to manage material placement without constant repositioning. They reduce manual labour and speed up site operations significantly.
Alternative Delivery Models
IndustryContracting arrangements beyond traditional lump-sum or day-rate structures, such as alliance, integrated project delivery, or performance-based contracts. These models shift how subcontractors are engaged, paid, and held accountable for outcomes. Understanding them helps field service firms assess risk, pricing strategy, and scope responsibilities before signing.
Alliance Contract
IndustryA long-term agreement where a subcontractor and operator share risks, costs, and rewards on a project. Both parties collaborate closely rather than working at arm's length. Performance incentives and pain/gain sharing are common features.
PPA (Power Purchase Agreement)
IndustryA long-term contract where a buyer agrees to purchase electricity from a generator at a fixed price. For subcontractors, PPAs on large sites can affect whether temporary or permanent power infrastructure is in scope. Understanding site power arrangements helps clarify mobilisation costs and equipment requirements.
Latest Industry News
HDD Tooling Selection: How to Avoid the Mistakes That Sink a Bore Before Pullback
Trenchless Technology breaks down the three phases of HDD tooling selection, and why a mismatch between tool and ground conditions can turn a routine bore into a costly failure.
2 months agoIndustryThyssen Mining Claims World Record Raise Bore at BHP's Jansen Potash Mine
Thyssen Mining and TRL Mining Construction LP completed twin 8-metre diameter raise bore excavations at BHP's Jansen potash mine in Saskatchewan, claiming a world record and saving 64 days on schedule.
3 months agoIndustryFluid Design Adjustment Rescues 4,400-Foot HDD Waterline Bore
When unexpected unconsolidated sand destabilized a long municipal HDD installation, a mid-job drilling fluid redesign made the difference between project success and failure. Here's what happened and what it means for your next long-bore bid.
4 months agoIndustryWhy Clay Inhibition Should Be Planned Before the Bore Starts, Not After Torque Spikes
HDD crews drilling through reactive clay formations can avoid torque spikes, mud rings, and lost-tool risk by building clay inhibition into the fluid program from the start, not as a mid-bore rescue measure.
4 months agoRelated Guides
How Operator Mergers and Acquisitions Affect Your Subcontract Agreements
When operators merge, get acquired, or sell assets, subcontractor agreements are caught in the middle. Learn how M&A activity affects your MSA, payment terms, vendor status, and what to do before, during, and after a deal closes.
Industry GuideHow Rig Count Trends Affect Subcontractor Demand and What to Do About It
Rig counts are the earliest signal of where field service work is heading. Learn how to read drilling activity trends, anticipate demand shifts, and position your crew before the phone stops ringing.
Industry GuideWhat Is an AFE in Oil and Gas and How Does It Affect Subcontractor Payments?
An AFE (Authorization for Expenditure) controls every dollar spent on an oilfield project. Learn how it affects your billing, change orders, and cash flow as a subcontractor.
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