Abstract: A shaft drilling machine comprises a drill head carrying drill tools thereon, a device for guiding the drill head in a shaft, a device for advancing the drill head in the shaft, and drive aggregates which are lowered into the shaft together with the drill head and driving the latter. A sluice for providing a rinsing fluid is arranged in a pilot drill. A rinsing conduit and an ascending conduit for extracting from the shaft a drilled material-rinsing fluid mixture generated during the drilling operation are connected to the sluice which is formed as a bucket wheel.

Abstract: A drilling machine for drilling descending large boreholes in earth or rock tructures, comprises an elongated drill pipe driven by a drive machine positioned outside a borehole being drilled, a drill head connected to said pipe and a support device for a drill head. A fluid-supplying device having a descending conduit, supplying fluid from the fluid supplying device to the drill head, is further provided in the drilling machine. A sluice charged with the mixture of the material drilled and the fluid is arranged in the drill head and driven by the drillpipe. The support device is secured in the machine against rotation.

Abstract: A method and device for making geophysical measurements in a wellbore comprising a measuring string of a plurality of measuring tools displaced along a borehole wall connected to a surface control unit by a traction system including a cable, guide pulley, connection head and junction box. The measuring tools are displaced at a relative velocity which is equal and opposite to the absolute velocity of the traction system in order to reduce the absolute velocity of the measuring tools to zero during measurement periods. The relative velocity of the tools is in the same direction as the absolute velocity of the traction system between measurement periods, with the result that the absolute velocity of the measuring tools during these periods is higher than the absolute velocity of the traction system.

Abstract: A shaft boring machine including a rotatable cutterwheel assembly with a horizontal axis mounted on a carriage having vertical travel. The carriage is mounted on a slewing base frame and rotates about the vertical axis of the machine. An excavating unit for muck removal is mounted opposite the cutterwheel on the slewing base frame and loads directly from the shaft bottom into a muck hopper. When the hopper is full, it is discharged into a hoist bucket which is hoisted to the surface. The machine is positioned in the shaft by upper and lower gripper systems. Walking cylinders between the two gripper rings advance the machine up or down the shaft.

Abstract: Apparatus 10 for propelling equipment through a fluid-filled conduit 12, such as a pipeline or oil well tubular. The propulsion apparatus incorporates first and second elements 14,16 adapted to be moved in a first axial direction through the conduit 12 and to resist being moved in the opposite axial direction. The first and second elements 14,16 are connected by a biasing element 18 which is adapted to move the first and second elements 14,16 toward one another in response to increasing the pressure within the conduit 12 and to move the first and second elements 14,16 away from one another in response to decreasing the pressure. By cycling the pressure of the fluid within the conduit 12, the propulsion apparatus 10 propels itself through the conduit 12. In one embodiment, the first and second elements 14,16 are adapted to reverse, on operator command, the direction of permitted travel of the propulsion apparatus 10.

Abstract: A drilling device which can be lowered in a drill hole consists of a drive device, a drill which is rotated by this drive device and a clamping device formed as a unit which can be engaged with the inside wall of the drill hole and serves to transfer the torque of the drive to the drill. The drill consists of a ring-shaped housing, the outside diameter of which corresponds with the diameter of the drill hole and the upper part of is closed off by a plate. The housing contains several cutting tools which are equipped with bore crowns which serve to cut out a drill core and which are arranged at uniform distances and parallel with the longitudinal axis of the drilling device. Using additional drive devices, the cutting tools are designed to impart impact impulses and/or additional rotational movements in an axial direction. All drive devices are fluid actuated in such a manner that the clamping device is actuated initially and the drill is subsequently activated by the increasing pressure of the fluid medium.

Abstract: An apparatus for drilling oil and gas wells includes an articulated drilling assembly having a bit which is powered by an air motor pressurized by air or gas delivered from the surface of the earth via a coiled tube. A torque arrestor is used to keep the drilling assembly from rotating with the bit. The apparatus is suitable for drilling horizontally within the earth as well as vertically.

Abstract: A locking device for a tool with telescopically displaceable parts such as the various tools including a drilling jar used in the deep-well drilling art comprises thickened spindle portion (1) and a sleeve portion (2) with a displaceable sleeve (11) displaceable therein to and away from an axial abutment (17). The thickening of the spindle portion provided by a rigid tapered sleeve (3) with tapered end surfaces (5 and 6) and the sleeve (11) within the sleeve portion with an internal tapered surface (12) are coupled via locking balls (19) disposed for radial movement in an annular cage 20 between the rigid and displaceable sleeves 3 and 11. The sleeve (11) is held by an axial spring (16) in such a position that the balls come to lie axially between the axial abutment (17) and a region of the tapered sleeve (3) having a larger diameter and thereby form a constriction to the passage of the sleeve (3) of the spindle portion ( 11).

Abstract: A machine for boring a shaft in earth strata or the like. An annular support ring means having an outside diameter approximately equal to the diameter of the shaft which is selectively engageable or disengageable with the shaft wall by the use of clamping means is disclosed. A carriage means which is slidably mounted on the annular support ring means and orbital thereabout is also disclosed. A rotary cutting wheel means having a diameter substantially smaller than the diameter of the shaft is mounted on the carriage means and is axially displaceable with respect thereto for movement in a direction which may be parallel or inclined with respect to the axis of the shaft. Various drive means for moving the carriage means circumferentially about the annular support ring means, and for moving the rotary cutting wheel means in an axial direction with respect to the carriage means, and for rotating the rotary cutting wheel means are described.

Abstract: An apparatus for producing an upwardly directed drill hole with feed cylinders and a clamping cylinders contains a pressure medium system with a pump, a supply duct and a control valve. In order to attain a particularly favorable and simple design, a second pump is provided, for feeding a second supply duct, from which at least one branch duct containing a choke or the like leads to the drilling head or its tools. The control valve is provided between the first pump and the first supply duct for one set of sides of the clamping and feed cylinders.

Abstract: A tubing string anchor (20) is provided for anchoring a tubing string (14) within a well bore (10). This prevents motion of the tubing string during a pumping operation. The anchor (20) includes a support (26) for mounting a number of roller assemblies (32-38). Each roller assembly includes a roller slip (40) for frictional engagement with the wall ( 28) of the well bore (10). Notches (52) on the roller slips may cooperate with pawl assemblies (68) to prevent the slips from rotating in at least one direction to anchor the tubing string within the well bore. The pawl assembly may be activated by the hydrostatic pressure within the internal passage (24) within the annular section (30) during the pumping action. This permits the tubing string to be positioned and removed from the well bore freely.

Abstract: A down-the-hole rock drill including a drill bit provided at the lower end of a drill rod, which is rotatably driven by an above-the-ground motor. To increase the drilling efficiency and facilitate drilling of large-diameter holes a machine casing is positioned between the drill rod and the drill bit, said casing enclosing a hydraulic pump which is rotatably driven by the drill rod. The hydraulic pump delivers pressurized liquid to and drives the percussion unit including a hammer, the latter delivering blows against the drill bit at regular intervals. The machine casing also encloses at least one hydraulic motor driven by the pressurized liquid and arranged to rotate the drill bit. Hydraulically controllable blocking means prevent the machine casing from rotating relative to the drill hole wall while the drill bit is in operation.

Abstract: The drill has a housing receiving therein a reciprocating striker, effecting percussive action upon the tool for breaking the rock at the face of the hole, mounted at the forward part of the housing, and upon the housing itself for propelling the drill in the hole. The housing also receives therein a mechanism for rotating the tool, including a self-controlled coupling provided with a movable sleeve and a stationary sleeve and adapted to transmit a torque to the tool in only one direction of rotation. The drill is provided with a device preventing a rearward motion of the housing and its rotation during a drilling operation. The drill is characterized by having a return device for retracting the tool from the face after it has been struck by the striker.

Abstract: This disclosure relates to apparatus for drilling wells for oil, gas, water, etc., wherein the device for drilling is placed in a rigid cylindrical collar which is expanded and pressed in the walls of the well. The collar absorbs a reactive torque from drilling. In the upper part of the walls of the collar control devices are installed which send up the signals about outside collar pressure, temperature, etc., and thus indicate any complications in the process of drilling. The collar is coaxially joined at its upper end to a thin-walled, continuous tube which is formed from a coiled sheet by drawing the sheet through a rolling-up system of rollers. The tube is axially extended and retracted by a mechanism which has two or more systems of tube moving elements which are symmetrically disposed relatively to a longitudinal axis of the tube and engage the external surface of the pipe column with forces which are sufficient to create the necessary friction forces for moving the tube.

Abstract: The invention herein relates to an undercutting device which is provided with a substantially tubular body adapted to be placed within a parallel-sided hole. A rotary percussion head is provided at one end of the body and has one or more cutting tools which extend radially therefrom at an obtuse angle and which cutting tools are adapted to cut outwardly from the radius of the body, means are provided for rotating the head about the axis of the body and for operating the percussion head at one predetermined depth in the hole so that the cutting tools may act on the wall of the parallel-sided hole.

Abstract: A duct section or other load to be moved axially along a bore hole has two reciprocating drivers mounted on it and two sets of gripping elements. Each driver reacts axially between the load and a set of gripping elements to move the gripping elements relative to the load through a defined stroke in each axial direction. An endless cable with axially extending straight stretches has one stretch connected to each driver to constrain the drivers always to move in opposite axial directions and to begin and end their strokes simultaneously. The gripping elements are so formed that when engaged with the surface of a bore hole, increasing axial force on the load in one direction increases the radially outward force under which they bite into the surface.

Abstract: A bore hole to be deepened far into air-impermeable bedrock has an air-tight lining and an air lock in its upper portion, and it is pressurized below the air lock. A duct comprising endwise connected but disconnectable duct sections extends through the bore hole, its top end open to the atmosphere. A drilling mechanism having a telescoping connection with the bottom of the duct comprises a bit driven by a pneumatic motor that has an exhaust air outlet opening into the duct and a pressure air inlet in the bore hole outside the duct. At intervals along the duct remotely controllable supporting and moving devices are fixed to duct sections, each device having a pneumatic actuator with an inlet opening to the bore hole and an outlet opening to the duct. The devices have gripping elements that frictionally engage the bore hole surface to confine the duct against motion or to move it up or down for raising or lowering the drilling mechanism.

Abstract: Earth drilling equipment includes a main body tube with jacks to releasably support it within a drilled shaft, or within an erected start up shaft. An outer casing is rotatably mounted within the main body tube, and carries a horizontal base on which are driven wheels, and vertical shafts which have cutting elements. Means within the casing for fluid input and evacuation within the drill area is provided to form a slurry of the fluid and excavated material for withdrawal through the casing. As drilling continues, the main body tube is lowered into the shaft.The cutting elements include plates with cutting edges mounted on individual axles such that the edges are maintained in cutting relation to the area to be drilled.

Abstract: A normally generally horizontal cylindrical open-ended casing having a cylindrical rotor coaxially mounted therein for rotary and axial movements, the rotor having a rear end forwardly spaced from the rear end of the casing and a boring head on its front end projecting forwardly of the front end of the casing. At least one motor is mounted in the casing for imparting rotation to the rotor. A pair of fins are mounted in the casing for movements radially through openings in the casing to engage earth material to control rotation of the casing on its axis in the ground. Fluid pressure rams operate to impart limited axial movements to the rotor and boring head relative to the casing and radially extending and retracting movements to the fins. Controls for the rams and motor provide for common operating pressures to the rams and motor.

Abstract: An apparatus of the type used in forming boreholes in earth formations, as particularly utilized in and about mining operations, which includes the addition of thrust force accumulator structure which enables a continuous drilling progression during the cyclical actuation of alternating borehole anchor mechanism. The device utilizes a conventional form of drill motor and drill bit coupled with a particular form of piston/cylinder anchor mechanism which functions in coaction with a force accumulator compression spring.

Abstract: The machine has a braking arrangement for retaining it against rearward motion and rotation and includes a housing accommodating therein a hammer reciprocable in operation of the machine and adapted to strike the head part of the housing, the latter having a drilling tool rigidly connected thereto. The tail part of the housing supports a sleeve rigidly connected with the braking arrangement. The housing and the sleeve are connected so that the housing is rotatable and axially displaceable relative to the sleeve. The drilling tool rotating mechanism is positioned intermediate the sleeve and the housing and includes a helicoidal couple made up by a helicoidally threaded rod rigidly secured to the housing and a nut, the mechanism further including a freewheeling clutch of which the movable cage is made integral with the nut.

Abstract: A cutter wheel is mounted at the lower end of the machine for rotation about a horizontal tubular support. Cuttings are picked up by buckets on the cutter wheel and are directed into the tubular support to be received by an endless bucket conveyor which carries them upwardly to a discharge station. As the machine is advanced the cutter wheel is rotated to make a first cut in the shape of the leading portion of the cutter wheel. The cutter wheel is then retracted out from the cut and is rotated about the axis of the hole. This repositions the cutter wheel so that when it is advanced again it will make a second cut which crosses the first. This procedure is repeated until the desired cross-sectional configuration (e.g. circular) of the hole is obtained.

Abstract: A percussive machine having an impact mechanism accommodated to a housing with a hammer piston imparting blows to a rock-destroying member. There is provided an air-supply duct for supplying compressed air to the impact mechanism and to the hole face. In order to prevent the machine from moving away from the hole face during the operation, the housing is provided with an elastic tubular member having a space in constant communication with the air supply duct.

Abstract: The present invention relates to belling apparatus for forming a bell shaped recess at the lower end of a pier bore and is concerned primarily with such apparatus in which spoil generated by cutting the recess is continuously removed by an auger.