Casing Shoes & Casing Crown Bits

Advance through any ground

Drill King casing shoes and casing crown bits guide and protect rotary casing as it advances through unstable, unconsolidated or variable overburden, so you can case and drill at the same time without losing hole integrity. Popular sizes ship from stock, with custom configurations on request.

Engineered to take the hit, so your rig doesn’t have to.

Broad Size Range

Popular production and stock sizes covering 133–234 mm diameters, sized to match standard rotary casing strings.

Double & Triple Lead Threads

Double or triple lead threads, right hand or left hand, to match your casing string and rig configuration.

Premium Carbide Options

Premium or standard carbide in parabolic, dome or chisel profiles, selected to suit the formation and cutting action required.

Wear Pads for Longer Life

Wear pads give extra protection against abrasive ground, extending shoe and bit life across longer casing runs.

Heat Treatment on Request

Additional heat treatment is available where project conditions call for extra hardness and durability.

U.S. Made, ISO 9001:2015

Manufactured in Mansfield, Texas, to Drill King's ISO 9001:2015 quality standard, certified since September 2017.

Casing advance drilling exists to keep the hole open in ground that won’t hold itself. The casing shoe or crown bit leads the casing string down, cutting the path it follows.

01 Fitted to the leading edge

The casing shoe or crown bit is fitted to the leading edge of the rotary casing string, ahead of the casing pipe body.

02 Cuts and guides the string

As the rig rotates and advances the casing, the carbide-faced shoe or bit cuts and guides the string through the formation.

03 Casing follows the cut

Sized to the casing OD, the shoe or bit opens a bore that lets the casing follow immediately behind, holding the hole open.

04 Protected to target depth

Wear pads and premium carbide protect the cutting face from abrasive ground, keeping the casing advancing to depth.

Not sure which system fits your ground conditions? Our technical team can match the right configuration to your formation, casing spec and rig setup. Ask for a recommendation.

Popular stock sizes:

133 × 140 mm

152 × 154 mm

152 × 160 mm

219 × 234 mm

Water Well

Advance casing through overburden, running sand and gravel to reach the aquifer with the hole intact.

Geotechnical & Foundation

Hold the hole open through fill and unconsolidated ground for site investigation and foundation work.

Mining

Case through overburden quickly and reliably before drilling into the formation below.

Exploration

Get through difficult surface ground so exploration drilling can continue to target depth.

What's the difference between a casing shoe and a casing crown bit?

Both fit to the leading edge of a rotary casing string to guide it through the formation. A casing crown bit has a carbide-faced cutting profile on that leading edge. Drill King builds both to suit different casing systems and formation conditions.

What sizes does Drill King offer?

Popular production and stock sizes include 133 x 140 mm, 152 x 154 mm, 152 x 160 mm and 219 x 234 mm, matched to standard rotary casing.

Can Drill King manufacture custom sizes?

Yes. Alongside the popular stock sizes, our technical team can discuss custom sizing to match casing strings outside the standard range.

What thread and carbide options are available?

Double lead or triple lead threads in right hand or left hand configurations, paired with premium or standard carbide in parabolic, dome or chisel profiles.

Do casing shoes and crown bits need additional heat treatment?

Not by default, but additional heat treatment is available on request for projects in especially abrasive or demanding ground.

Tell us your rotary casing size and project requirements, and we’ll match the right casing shoe or crown bit.