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7404458 |
The device has a drill body, of generally cylindrical shape, connected by a flexible pipe to a high-pressure water pump placed on a low-height carrying vehicle. A striking piston is mounted movably, and is resiliently returned, in the dr...
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7159676 |
A fluid distributor device is for a percussive drill assembly including a generally tubular casing ( 2 ) having a longitudinal centerline and a piston ( 6 ) disposed within the casing so as to define a reservoir chamber ( 27 ) in the cas...
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7040417 |
The present invention discloses, in certain aspects, systems and methods for producing cyclical impacts and, in certain aspects for moving a drilling apparatus for drilling a borehole in a formation, the system in certain embodiments inc...
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6959760 |
A power generator for use in a wellbore formed in an earth formation, including an internal combustion engine having a cylinder and a piston defining a combustion chamber in the cylinder, the engine being arranged to induce a reciprocati...
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6910542 |
An underground drilling method and apparatus generates intense pressure pulses at a location at the surface. The pressure pulses propagate down through a drill string to a drill bit. The pulses may be generated by creating water hammer i...
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6702045 |
There is provided drilling apparatus ( 10 ) comprising a hammer casing ( 11 ), a free piston motor piston guide and porting sleeve ( 12 ), a drive sub ( 13 ), a drill bit ( 15 ) splined by shank ( 16 ) to the drive sub ( 13 ). Below the ...
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6568485 |
Between a drilling motor and the upwardly continuing drill string a housing contains a speed sensor rotationally connected to the motor rotor. Motor speed is sensed and if rotating at a rate less than a selected speed, a cooperating by-p...
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6516897 |
A self-contained excavation device, with specific application as a beach umbrella excavator and anchor apparatus, includes a cutting head with a stepped cutting edge to penetrate thin shell layers, recesses defining anchor shelves to pre...
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6464023 |
A hydraulic percussion drill includes a piston hammer disposed in a cylinder for reciprocating movement in response to pressure fluid acting continuously on one transverse face of the piston hammer and in response to valving of pressure ...
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6374924 |
A downhole drilling apparatus for interconnection in a casing or liner string having a drill bit disposed thereon for enabling the drilling of intersecting wellbores without removal of the drill bit is disclosed. In a disclosed embodimen...
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6293357 |
A hydraulic reciprocating piston hammer percussion drill includes an elongated piston hammer having opposed reduced diameter shank portions and disposed in a cylinder for reciprocating movement in response to pressure fluid acting contin...
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6073708 |
A mud pressure intensifier works with existing conventional drill strings without requiring special equipment or drilling fluids. The intensifier is self-contained and is located in the drill string between the drill bit and the rest of ...
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6050349 |
A hydraulic system for supplying hydraulic fluid for operating a mud pulse generator includes an accumulator that has a reservoir. The accumulator is arranged to maintain the fluid pressure in the reservoir. The system also has a pressur...
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5984026 |
A pressure converter for mounting above the drill bit on a drill pipe for generating a higher fluid pressure in a portion of a drilling fluid flow, comprises a piston moveable in a cylinder. The piston has a large piston area and an oppo...
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5941325 |
Pressure converter for mounting above the drill bit at the lower end of a drill pipe for generating a higher fluid pressure in a portion of a drilling fluid flow, including a piston which is moveable in a cylinder. The piston has a large...
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5934392 |
Pressure amplifier mounted at the lower end of a drill pipe for deep drilling to generate an increased fluid pressure. A piston with a pressure stroke and a return stroke between end positions in a cylinder has a large piston area which ...
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5890547 |
Pressure amplifier for mounting above the drill bit at the lower end of a drill pipe for generating an increased fluid pressure in a drilling fluid flow, for example for obtaining an increased drilling effect. A reciprocating piston in a...
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5662180 |
A compressor piston divides a first compartment into two compression chambers, while a hammer piston divides a second compartment into two drive chambers, each of the compression chambers being connected to a respective one of the drive ...
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5577564 |
A rotary fluid converter having sloping exterior shoulders at one end, a hollow bore at the center, and a downwardly sloping fluid orifice extending from said sloping exterior shoulders at a tangent to said interior bore such that turbul...
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5375671 |
Converter group comprising at least two pressure converters adapted to be mounted in a row axially above the drill bit at the lower end of a drill pipe for deep drilling, in particular for oil and gas, and for generating an increased flu...
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5361857 |
A pressure converter for deep drilling keeps contaminated drill mud outside of the working mechanisms of the drill fluid. Thus, the inner drill mechanisms are kept clean by drill fluid. The device contains a rotatable valve positioned ab...
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5267622 |
In a percussion drilling apparatus, an impact block assembly is provided for sequentially driving drill rods into a subterranean formation, the impact block assembly including an impact block member aligned with one or more rows of drill...
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5246080 |
A pressure converter for a drill pipe includes a housing with a header channel therein which is in communication with a drill bit, a drive unit which is driven by a driving drilling fluid flow of the drill pipe, a valve which is operativ...
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4928775 |
A manually operated downhole for an underground earth boring apparatus having a pneumatically operated earth boring tool. A drill pipe is connected to the tool and to a source of pneumatic fluid. A valve is positioned in the drill pipe s...
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4883133 |
A percussion drilling apparatus for drilling bore holes into subterranean formation in which a plurality of drill rods are arranged in concentric rows in a drill bit housing, each rod having an impact tooth at its lower ends and the rods...
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4711309 |
A drilling apparatus has a rotatable drilling rod (15) on the leading end of which is mounted a bit assembly including a bit (10) and a bit driver (12) for reciprocating the bit. The bit driver is powered by a high pressure fluid supplie...
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4531593 |
A method is provided for substantially self-powering turbines by expanding compressed gases released downhole or in adjacent formations. These gases do work in the turbines as the gases expand toward atmospheric pressure at the earth's s...
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4515225 |
A drilling instrument adapted to be positioned in a conduit for the flow of mud. The instrument has a passage sealing a fluid from the mud. Means is responsive to energy derived from the mud for causing the sealed fluid to flow. An elect...
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4483394 |
A hydraulic power unit is provided for a downhole instrument of a measurement while drilling system for a well drilling. The hydraulic power unit is enclosed within a drill collar that is connected in the drill string of a rotary drillin...
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4462469 |
A motor for driving a rotary drilling bit within a well through which mud is circulated during a drilling operation, with the motor being driven by a secondary fluid which is isolated from the circulating mud but derives energy therefrom...
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4431064 |
An hydraulic drive apparatus for use in downhole tools is described. The apparatus provides rotational and translational movement to a cutting tool element disposed in a downhole tool or sonde automatically adjusting advancing motion of ...
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4378850 |
A hydraulic fluid supply apparatus for a downhole tool includes a first annular zone adapted to be filled with hydraulic oil and a second annular zone adapted to be filled with a pressurized second fluid. The first and second zones are s...
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4371958 |
In the preferred and illustrated embodiment of the present apparatus, a drilling orientation tool is disclosed utilizing a mud pressure charging system where the pressure charge is converted into hydraulic oil pressure. The hydraulic oil...
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4278136 |
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 mach...
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4256191 |
Methods and apparatus are disclosed for the rapid and efficient drilling of oil well and other types of bore holes through tough abrasive underground formations, which methods and apparatus utilize high drag intermittent contact and cool...
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4226285 |
An improved magnetic junk retriever arranged to magnetize a drill bit just prior to its removal from the bottom of the well bore. A wound, electromagnet subassembly is connected between the drill bit and the drill collar. A battery-pack ...
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4211292 |
The advancement angle of a borehole cut by a rotary drill bit of the type which forms a cylindrical sidewall, a drill face and a circumferentially extending gage corner, is controlled by removing a different amount of the gage corner mat...
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4211291 |
A drill fluid powered hydraulic system used for driving a shaft connected to a drill bit is disclosed. The apparatus includes a hydraulic fluid powered motor actuated and controlled by hydraulic fluid. The hydraulic fluid is supplied to ...
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RE30246 |
A method and at least one mechanism for carrying out the method is disclosed. A method of (1) generating time modulated torque pulses by engaging and disengaging a mud turbine driven rotating torque generator in the bottom of a wellbore,...
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4147223 |
A logging-while-drilling apparatus having an asymmetrically efficient drive train for connecting a motor to a signal-generating rotary valve. The drive train includes a transmission which efficiently transmits torque from its input to it...
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4098359 |
A hydraulic motor for use in a drill string is disclosed. The motor incorporates a closed hydraulic system having a piston exposed to variations in mud flow pressure. The piston reciprocates and by its movement pumps hydraulic fluid in a...
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4051909 |
A drilling device is disclosed which comprises a tubular drilling lance adapted to being lowered to great depths in the earth's surface and being raised therefrom. Disposed within the drilling lance is an energy generating system which c...
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4004642 |
Processes and apparatus in the field of Terradynamics, e. g. projectile penetration into soils and rocks, employing "open chamber" firing systems using "Trounds" (triangular rounds of ammunition). Included are salvo firings of small cali...
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3934659 |
The apparatus is a rocket with a drill head provided with a group of jet nozzles. One nozzle of this group is the face-forming one, while the plurality of the rows of the rest of the nozzles belong to imaginary circles concentric with th...
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3908770 |
A method and at least one mechanism for carrying out the method is disclosed. A method of (1) generating time modulated torque pulses by engaging and disengaging a mud turbine driven rotating torque generator in the bottom of a wellbore,...
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3897836 |
An apparatus for, and a method of, boring through earth formations, employing a drill bit which comprises a rotary drill, in combination with a device for producing pulsed jets of liquid under high pressure. The device is arranged to cut...
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3876471 |
Power supply apparatus for generating electrical energy for a sustained period of time within the environment of an earth borehole filled with drilling mud. The power supply is used in a downhole well logging system for supplying electri...
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3870112 |
A coring device comprising a tubular body provided at its lower end with a crown type drill bit. This crown bit has a central bore obturated by a plugshaped element. Under remote control, and under the action of a pressurized gas housed ...
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3802519 |
A tool is rendered easily operable and maneuverable for the performance of a wide range of work by means of an energy source in the form of a self-replenishing pressurized vapor supply decompression of which is controllable by an operator.
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3620313 |
A liquid propellant is burned in the bulk mode and in pulses to produce high combustion pressures with large power outputs. The pulsed high-pressure liquid propellant combustion is used in combination with a liquid jet drill to eject hig...
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