Camco Inc.

Francis D Logan

Leonard M Dybala

James M Thomason

A method of forming one end of a sidepocket mandrel into a tubular shape having an internal diameter large enough to receive an orienting sleeve, moving an orienting sleeve through the formed end, securing the sleeve to the mandrel, and reforming said end for reducing the internal diameter of the end sufficiently to form a premium female thread therein. The method of making an integrally formed sidepocket mandrel having a one-piece body with a main bore and an offset bore. Both ends are formed into tubular shapes while leaving a middle section unworked whereby the middle section forms a main bore and an offset bore. The tubular ends are reduced in size and shaped to form thickened walls which are aligned at the opposite ends of the main bore. During forming, one end, such as the bottom, is formed approximately sized for receiving thread, and the other end, preferably the top, is formed with an internal diameter sized to pass an orienting sleeve. After securing an orienting sleeve in the main bore, the top end is then reformed to reduce its internal diameter to approximately the internal diameter of the orienting sleeve and to provide material to cut an internal premium thread.

Integrally formed sidepocket mandrel

In a sidepocket mandrel for use in a well tubing in which the valve pocket is positioned inside of the mandrel body beside an opening with a deflector guide connected to the pocket and having a pair of rails for allowing the entrance of flow control devices into the pocket but preventing the entrance of open bore tools into the guide path and a locking lug secured to the deflector guide, the improvement of providing the longitudinal outer edges of each of the rails adjacent the open bore with a deformable lip protruding outwardly from the rail in which the lips are bent outwardly towards and against the inside of the body for preventing wirelines of well tools from catching between the inside of the body and the rails. The lips may be formed in the rails by either longitudinal recesses positioned along the edges on either the inside or outside of the rails. The lips may be bent outwardly by expanding a tool between one portion of the outer edges of each of the rails after the rails have been positioned in the body and longitudinally moving the expanded tool to bend other portions of the edges outwardly.

Sidepocket mandrel and method of making

A drilling machine having a base supporting a pair of ways on which moves a drill tool support having a drill spindle for holding a drill tool. A hydraulic piston and cylinder assembly positioned on each side of the drill spindle for moving the tool support along the ways. A workpiece holding chuck is positioned in the middle of the support ways and the drill spindle and hydraulic piston and cylinder assemblies are positioned in the same plane with the ways for preventing torque being applied to a drill tool and maintaining axial drilling forces on the drill spindle thereby allowing a drill to drill a straight hole in a workpiece held in the holding chuck. A control system is provided for supplying fluid to the piston and cylinder assemblies, but all of the drilling forces are carried by the piston and cylinder assemblies. In addition, means are provided for monitoring the drilling pressure applied to the piston and cylinder assemblies for indicating the drilling pressure and for automatically stopping drilling when a predetermined pressure is reached.

Drilling machine

A self-centering steady rest for supporting the free end of a cylindrical workpiece held in a chuck in a machine tool coaxially with the chuck axis. A first support including a pair of supporting rollers positioned on one side of the axis of the chuck and a second support including a second pair of supporting rollers positioned on the opposite side of the axis of the chuck from the first support. The opposing pairs of rollers are supported an equal distance from the axis of the chuck. Actuating means is connected to the first and second supports for simultaneously and equally moving the first and second supports and rollers towards the axis of the chuck for engaging and supporting the free end of the workpiece coaxially with the chuck axis. Preferably the first and second supports move in tracks in a base adapted to be slidably and movably secured to the ways of the machine tool for positioning the first and second supports adjacent the free end of the workpiece. Preferably each pair of supporting rollers is connected to an insert removably connected to one of the first and second supports whereby different sets of rollers may be connected to support different ranges of workpiece sizes.

Growing community of inventors

Houston, TX, United States of America

Francis D Logan