Acker Drill Company Inc products

The Acker standard coring bit design and construction have proven popular and most satisfactory for general purpose drilling assignments. On large or difficult coring jobs, Acker field technicians will be pleased to design a bit to meet your specific conditions and provide the lowest possible cost per foot.

The DCDMA "M" Design core barrels and bits are used when coring soft, friable or broken formations. They are available with conventional waterways or bottom discharge design. Bottom discharge bits have internal water ports that permit the water to bypass the core and prevent erosion of soft materials. Grit facing strips are available for coring in very abrasive formations and to avoid excess wear on the bit body.

These bits are for use with DCDMA standardized large diameter design double tube core barrels for recovery of large diameter cores in rock-like material. They are available with internal waterways or with bottom discharge ports that allow the water to bypass the core. They are available with all the options of the Acker bits.

Diamond bits are stocked in standard sizes. The chart shows basic part numbers and diamond carat size. Four diamond grades are available as well as special features such as extra hard matrix, tungsten hard facing, and reinforced waterways. Many other competitive features are available on request. Consult Acker price lists for details...Please specify step-type or conventional crown.

Acker surface set diamond casing shoes and bits ate available for the approved OCOMA flush joint "W" design casing. "W" casing bits and shores ate only available with box thread connections, Casing bits and shoes have a standard pin thread connection. Box threads are available on request.

Available in all standard sizes for OCDMA "W" Design casing. The carbide insert is a very economical bit for spinning in casing through soft rock strata or where casing is left in the hole. More economical than diamonds, the carbides withstand shock loads when drilling overburden. Carbides may not be sharpened and are usually run to destruction. There is no salvage value.

The casing shoe is generally used in caving overburden where the "spun in" casing cannot be removed without the hole caving. For this problem, the casing shoe is designed without diamonds on the radius. This allows the shoe bit to stay in place at the bottom of the casing and accommodate other tools passing through the shoe without danger of being destroyed by the diamonds in the bit. After operations are completed, the shoe is recoverable.

A casing bit is usually set with diamonds and used to rotate the casing into solid materials where it can be withdrawn without the hole caving in for the purpose of cementing other casing into place. The diamond casing bit has both inside and outside diamonds to facilitate making a hole with clearance as well as using the casing as a drill tube.

Reaming shells containing diamonds either in vertical strips or in the balanced ring design and are available for use with all standard size and "M" design bits and core barrels. Acker reaming shells are also available for core barrels of other makes (Give size, manufacturer, etc. when ordering.)