Ulterra Drilling Technologies, L.p.

Thomas A Damian

Jason C Maw

Christopher M Casad

Carl Aron Deen

Matthew B Roseman

Andrew David Murdock

Ryan Matthews

Benjamin Chrest

Nathan Andrew Brooks

Ben Chrest

Kristy Everheart

Kerry Sisson

Matthew Roseman

The present disclosure relates to coupler for connecting a drill pipe to a drill bit as well as methods for manufacturing the same. In particular, the present disclosure describes a coupler which includes a housing including a first connecting portion at a first end for connecting to a drill pipe, a base coupled to the housing and including a second connecting portion at a second end for connecting to a drill bit, and an intermediate component disposed between the base and the housing, wherein the coupler is configured for rotation about an axis during use, with the intermediate component allowing limited relative rotation between the housing and the base about the axis.

Drill coupler for mitigating torsional vibration

A PDC drill bit for use in downhole air drilling includes a body with a face for engaging a bottom of a hole being drilled and a gauge for engaging a side of the hole being drilled. The face includes a cone, a nose outward of the cone, a shoulder outward of the nose. The bit further includes channels formed in the face of the bit that extend from within the cone to the gauge. The channels define a plurality of blades separated by the channels. Each of the plurality of blades has a leading edge with PDC cutters mounted thereon. One or more of the channels are defined by two side walls and a bottom wall and has a length, width and depth. The width or depth remains substantially constant from a first point on its length within the cone to a second point within the shoulder.

Polycrystalline-diamond compact air bit

A downhole tool for cyclically generating cyclical pressure waves in drilling fluids of sufficient magnitude to vibrate a drill string or coiled tubing to reduce friction between drill string or coiled tubing and a wall of an uncased or cased wellbore. A passageway through which drilling fluid flows through the tool is constricted to increase pressure of the drilling fluid while it continues to flow through the tool. A bypass around the constriction is cyclically opened by a rotary valve to increase the flow area through the tool for the drilling fluid while at the same time an axially shifting valve, shifted by a pair of rotating cams, opens to allow drilling fluid to vent to an annulus formed by the drill string or coiled tubing and a wall of the wellbore.

Downhole vibration tool for drill string

A rotating bit with cutters used in drilling operations to advance a borehole in the earth. The bit includes column cutters in the bit body in a recessed central area. The column cutters contact a column of borehole material that is formed during operation. The column cutters are oriented to fracture the column, producing larger cuttings or chips, and to exert a force on the column to limit lateral movement of the bit during operation.

Drill bit

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Dallas, TX, United States of America

Thomas A Damian