Drilling Equipment Since 1978

Tools built for the extreme.
Delivered worldwide.

Hole Openers, Underreamers, and Well Abandonment systems - engineered for the world's most demanding drilling environments.

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48+Years of OperationFounded in Lafayette, LA
45+Countries ServedGlobal distribution network
5Product FamiliesApplication designed solutions
IADCAffiliate AssociationsISN · DISA · Veriforce · Avetta
Who We Are

Around the clock, around the world.
Service and quality when you need it.

Since 1978, Hole Opener Corporation has engineered drilling tools used by operators on every continent. From Lafayette, Louisiana, we design and manufacture Hole Openers, Underreamers, BHA components, and Well Abandonment systems.

Every HOC tool is built to exact specifications and can be customized for application-specific solutions matched to your wellbore conditions.

Our Story
HOC team member inspecting drilling equipment

What We Build

Industry-Leading
Downhole Tools

DTU Drilling Type Underreamer

DTU

Drilling Type Underreamer

Designed for hydraulically enlarging boreholes – the workhorse of the product families. Available in multiple configurations for a range of formation types and expansion ratios.

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MSCC Multi-String Casing Cutter

MSCC

Multi-String Casing Cutter

Capable of cutting multiple casing strings in a single run – ideal for well abandonment and workover operations.

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RHO Rock Hole Opener

RHO

Rock Hole Opener

A variable size fixed diameter Hole Opener designed for versatility and cost efficiency commercially proven worldwide.

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SPB Spherical Pilot Bit

SPB

Spherical Pilot Bit ("Z-Bit")

An alternative to a conventional bull nose to guide BHAs through pre-drilled pilot holes and compatible with any drill string.

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BOSS Reamer Underreamer

BOSS

BOSS Reamer

High-performance underreamer with proven blade geometry for maximum ROP. Available in multiple configurations for vertical and directional wells.

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Security Type Hole Opener

SEC

Security Type Hole Opener

The most widely known fixed diameter hole opener worldwide. Field replaceable cutters with connection or integral bull nose configuration.

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DTS Underreamer

DTS

DTS Underreamer

Drilling type underreamer designed for soft to medium formations. Reliable performance for wellbore enlargement during drilling operations.

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HOC Marine Swivel

MS

Marine Swivel

Keeps the casing cutter centralized vertically inside the casing while being cut. Primary use in Gulf of Mexico surface conductor abandonment.

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Ready to Get Started?

Tell us your application.
We'll build the right tool.

Our Team works directly with your drilling team to spec the right solutions – no guess work, no catalog shortcuts.

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