Abstract: The roller reamer drilling tool includes an elongated body having a fluid circulation bore. A plurality of roller reamer units are mounted circumferentially about the body and are capable of being installed as units within a series of pockets machined within the body. The pockets include a central pocket to receive the roller reamer, a lower bearing block pocket and an upper bearing block pocket which has a width greater than the width of the roller so that the roller can be installed through the upper bearing block pocket, which allows the installation of the roller, shaft and upper bearing block as a unit.

Abstract: A whipstock assembly includes a whipstock and a non-retrievable setting tool. The non-retrievable setting tool includes a terminal body which is adapted to engage a bottom obstruction. The terminal body mounts a plurality of wedge members for movement radially outwardly as the wedge members are moved downwardly by an internally mounted piston member. The piston member is moved downwardly by an actuating cylinder which is attached to the whipstock. A spring member is positioned between the actuating cylinder and the piston to provide more uniform engagement between the actuating cylinder and the piston as the actuating cylinder and piston move downwardly thus moving the wedge members radially outwardly into engagement with the casing.

Abstract: A suction dredge for mining solids from a water bottom, includes a floating barge, an elongated tubular suction line extending between the barge and the water bottom, a boom for raising and lowering the elongated tubular suction line, a valve in the elongated tubular suction line for allowing water to enter the elongated tubular suction line, a dredge pump for causing solids to be drawn upward from the water bottom, through the elongated tubular suction line, to the floating barge, the dredge pump having a cavitation level at which the vacuum level is so high that the dredge pump ceases to pump, and an automatic control device for controlling the degree of opening of the valve, the automatic control device allowing just enough water to mix with the solids such that the dredge pump is maintained substantially at but below the cavitation level, the automatic control device including a measuring device for measuring the vacuum level of the dredge pump, and causes the valve to open more as the vacuum level rises

Abstract: A substantially homogeneous heavy wall drill pipe and its method of manufacture are disclosed. A cylindrical ingot is placed in a multi-hammer forging press to form the ingot into a drill pipe bar having a central protector portion and upper and lower connector sections each of larger diameter than cylindrical body sections of the drill pipe. Thereafter, the bar is straightened and upper and lower end connectors are machined. Threaded end portions are machined on the connectors and a bore is drilled through the drill pipe bar.

Abstract: A substantially homogeneous heavy wall drill pipe and its method of manufacture are disclosed. A cylindrical ingot is placed in a multi-hammer forging press to form the ingot into a drill pipe bar having a central protector portion and upper and lower connector sections each of larger diameter than cylindrical body sections of the drill pipe. Thereafter, the bar is straightened and upper and lower end connectors are machined. Threaded end portions are machined on the connectors and a bore is drilled through the drill pipe bar.

Abstract: A bladed stabilizer including an upper body section having an upper annular flow area between the outside surface of the upper body section and the walls of the bore hole. The stabilizer further includes a lower body section wherein a plurality of blades are mounted for the purposes of reaming the hole. The outside diameter of the lower body section and the cross-sectional measurements of the welded blades combine to provide a net annular blade flow area between the lower body section and blades and bore hole which is greater than the flow area available past the upper body section so that flow past the stabilizer is maximized.

Abstract: A borehole operating tool such as an underreamer or milling tool for performing borehole expanding or cutting operations in an oil well borehole, the tool including an elongated cylindrical housing having a main bore and side openings in which expandable arms are mounted for pivotal movement between closed and opened positions by a pivot pin; a piston element is mounted within the main bore of the housing for moving to an actuated position holding the expandable arms in an outer, expanded position; and a rotary fluid housing is mounted within each expandable arm about the hinge pin and includes a body nozzle for receiving fluid from the body and an expandable arm nozzle for directing fluid into a bore which extends through the expandable arm to thereby provide circulating fluid outwardly of the expandable arm in order to keep the operating outer end area of the expandable arm from becoming clogged.

Abstract: A method and apparatus for cutting and recovering tubular and associated well equipment submerged in a water covered area including the steps of lowering a well string including a cutting tool, a swivel and a releasable spear in a water covered area to seat the swivel on the well equipment to thereby position the spear above the well equipment and the cutting tool within the equipment to be cut and pulled, actuating the cutting tool to sever the well equipment, lowering the well string and then raising it sufficiently to unseat the swivel from the tubular and associated well equipment, and then lowering it again to telescope the swivel and releasable spear within the severed well equipment, and actuating the releasable spear to engage the severed well equipment for retrieval by pulling the well string out of the water covered area.