Thru Tubing Solutions, Inc.

Cudd Pressure Control, Inc.

Robert J Farkas

Michael L Connell

Andrew M Ferguson

Roger Lynn Schultz

Brett A Fears

Bryan Franklin McKinley

An abrasive perforator tool with a bypass flow channel. The tool comprises a tubular body or housing with perforating nozzles in the sidewall. A sleeve assembly inside the central bore of the tool provides for sequential deployment of first and second sleeves. Prior to deployment of the sleeve assembly, pressurized fluid can be passed through the tool to operate other tools beneath the perforator in the bottom hole assembly. Deployment of the first sleeve diverts pressurized fluid through the nozzles for perforating. Deployment of the second sleeve redirects the pressurized flow through the outlet of the tool to resume operation of other tools below the perforator.

Abrasive perforator with fluid bypass

A motor and rotor catch assembly for preventing loss of broken motor parts downhole. The assembly comprises a motor including a rotor supported inside a stator housing. A rotor bolt is connected to the upper end of the rotor, and is supported for axial movement within a rotor bolt housing from a running position to a deployed position. If the stator housing breaks or backs off, the attached rotor bolt shifts to the deployed position. In the deployed position, the bolt substantially reduces flow to the stator housing and simultaneously opens bypass ports to vent fluid to the annulus instead. In this way, the rotor is prevented from spinning rapidly, the diverted fluid creates a pressure change that alerts the operator to the motor failure, and the diverted fluid allows continued removal of debris and cuttings from the well bore.

Motor and rotor catch assembly

A rotary device, such as a downhole motor, with a rotary wave seal assembly. The seal assembly is formed by a sinuous or non-linear circumferential gland or groove and an annular seal member, such as an O-ring, supported in the groove. The device further includes at least one thrust bearing assembly for transmitting axial pressure from the bearing housing to the drive shaft. Each thrust bearing comprises a self-lubricating thrust washer as the bearing element. Still further, where the rotary device comprises two coaxial tubular structures that are not to rotate relative to each other, an anti-rotation means is provided. The anti-rotation means includes a cylindrical pin received in mating longitudinal, radiused grooves in the outer wall of the innermost elongate member and the inner wall of the outermost tubular member. The anti-rotation means includes a cylindrical pin received in the mating longitudinal grooves. This configuration allows axial, sliding movement of one tubular member relative to the other, but prevents rotational movement therebetween. Where the rotary device is a downhole motor, it further comprises a radial bearing sleeve positioned between the coaxial downhole ends of the universal housing and the connecting rod, above the bearing section of the motor. This sleeve acts as a barrier to prevent debris in the drilling fluid from moving into the bearing assemblies.

Growing community of inventors

Blanchard, OK, United States of America

Robert J Farkas