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7422076 |
Methods and systems for controlling movement of a bit of a drilling assembly during reaming of an already-drilled hole; the methods, in certain aspects, including determining a ream speed for downward movement of the bit in the hole, mov...
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7413031 |
An apparatus is provided for maintaining control of a machine which produces thrust, rotation or other outputs in response to input signals. The apparatus has two distinct parts, namely the operator input portion and the output portion. ...
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7389829 |
A method and apparatus for creating a reamed hole below the surface are disclosed. The reaming apparatus is arranged to be connected to one or more boring stems and has an interior section and an exterior section. The interior section is...
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7353889 |
An apparatus for bursting pipe is preferably adapted to receive rotational energy from the inner member of a dual-member drill string. In a preferred embodiment, a plurality of pipe-bursting members, driven by the interconnected inner me...
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7337859 |
In a drilling method for creating a channel leading from surrounding soil into a shaft which is separated from the soil by a wall, a channel is drilled through the soil from a starting pit in the direction of the shaft using a first dril...
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7243737 |
The present disclosure relates to back reamers having bases including leading ends that can be connected to a drill string and trailing ends that can be connected to product desired to be pulled through a bore being backreamed. The back ...
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7219750 |
An apparatus is provided for the drilling of a borehole and its simultaneous lining with cement or the like by the same apparatus. The apparatus comprises a combination spray head and reamer head, a means to drive the reamer head through...
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7195079 |
A horizontal directional drilling system is used to drive operation of a guidable reamer assembly connected to a drill string. The guidable reamer assembly preferably has a cutting member with a central longitudinal axis and a support me...
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7168509 |
A percussive drill bit or reamer having a plurality of bit segments formed into a circular pattern suitable for drilling or reaming a hole. The bit segments are close-fitted and shaped to increase the cutting area and improve efficiency....
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7137460 |
A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least cutting structure mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to the tool b...
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7131790 |
An extension rod has an interior end and an exterior end. The exterior end is formed with male screw threads. A primary bit has a cylindrical interior end and a conical exterior. Female threads at the interior end releasably couple with ...
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7128168 |
The invention provides a reamer apparatus for a ground boring machine that is capable of restricting increase in drawing resistance when performing drawing of a buried pipe by using a reamer and of efficiently performing drawing operatio...
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7111694 |
A hole opener including a tool body having upper and lower ends. The upper and lower ends may be coupled to adjacent drilling tools. At least two blades are formed on the tool body and are arranged so that the hole opener is positioned c...
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7108082 |
An enhanced reaming apparatus and method are disclosed. A reaming assembly may have a motor and a pump that provide linear force, torsional force, and pressurized drilling fluid to a reamer to cause the reamer to enlarge the bore of a pi...
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7090034 |
The present invention provides a reamer ( 100 ) having at least one journal body ( 110 ) and at least one toroidal cutter body ( 116 ). The toroidal cutter body ( 116 ) has a maximum diameter (MD), an outer perimeter (OP) and a plurality...
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7063145 |
In an embodiment, a method for heating a hydrocarbon containing formation may include providing heat from one or more heaters to an opening in the formation. A first end of the opening may contact the earth's surface at a first location ...
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7056065 |
A device for replacing lines without excavation including an annular overdrilling head and a drive for rotating a front module arranged on the drilling head.
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6953306 |
A method for the trenchless installation of new underground pipe accurately on line and on grade by microtunneling to install a pilot tube, installing a drill string along the pilot pipe line using a directional drilling machine, install...
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6953305 |
A bundle of tubes or pipes is arranged without trenches according to a fluid-assisted drilling method. A bore channel is made in a first boring step and the bore channel is widened when the bore/flushing head is removed therefrom, the bu...
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6929077 |
A raise boring head includes a roller cutter body and a saddle intended for rotary drilling in earth and rock formations. The roller cutter body is rotatably journalled on a shaft that is provided with two shaft spigots at its opposite e...
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6920944 |
A drilling assembly and an eccentric, adjustable diameter reamer are disclosed. The reamer includes cutter elements mounted on at least a first fixed blade for reaming a previously-formed borehole or for forming a borehole of increased d...
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6808030 |
The invention concerns a drilling apparatus for enlarging a bore in the ground, comprising a drilling head ( 6 ) having a drilling bit ( 12 ); a percussion piston ( 14 ) which is driven by a drive medium ( 9 ) and which impacts against t...
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6793442 |
The basic features of the invention include a pipe parting mole, a length of cable that is engagable to the mole, a cable pulling device and a cable pulling device engagement means that provides a mounting structure for the cable pulling...
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6755593 |
An impactor for use with a directional boring machine having a drill string connectable to the impactor for pulling the impactor through an existing pipeline uses rotation of the drill string to drive an internal striker. The internal st...
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6732816 |
The present invention is an improved method of installing a flowline below the surface. The method includes the steps of establishing first and second sight relief holes along a linear path, positioning a directional drilling machine on ...
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6729418 |
A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least one roller cone rotatably mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to th...
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6702046 |
The drill device has a body with a front end and a rear end and which is connectable to the shaft of a drilling apparatus. A plurality of angularly spaced apart slots are formed in the exterior of the device which extend between the fron...
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6682264 |
A method for the trenchless installation of new underground pipe accurately on line and on grade by microtunneling to install a pilot tube, installing a drill string along the pilot pipe line using a directional drilling machine, install...
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6668946 |
A steerable reamer and method for use in horizontal directional drilling. The reamer includes a carrier frame rotatably coupled to a reaming body, a carrier frame housing slidably coupled to the carrier frame, and an hydraulic cylinder f...
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6659198 |
The backreamer assembly for enlarging shallow depth boreholes in an earthen environment includes a substantially conical cutting surface. Contained within the substantially conical cutting surface is a speed reduction, torque increasing ...
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6655874 |
A method of slitting a flexible conduit in an underground bore, the conduit having entry and exit ends thereof exposed for access, includes: (1) fitting a retainer to flexible underground conduit adjacent to the entry end thereof, the re...
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6585453 |
An apparatus for replacing underground pipe. The apparatus has a fracturing or cutting element to fracture or cut underground pipe as it is drawn through the underground pipe. The apparatus additionally has an expanding element to expand...
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6585062 |
A reamer with a planetary gear train for use in horizontal directional drilling allows a reaming surface of the reamer to rotate at slower speeds while simultaneously conveying more power to the reamer via fast drill string rotational sp...
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6568488 |
A pipe bursting system of the invention operates by compaction rather than by reaming. The system includes a conventional directional boring machine, a drill string, and a pipe burster attached to the terminal end of the drill string. A ...
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6551028 |
A tool for replacing pipe, in which the existing underground pipe is fractured or cut into fragments, which are forced inward so that they pass through the tool. The tool has breaking members that extend radially outwards and backwards f...
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6524031 |
A trenchless pipe replacement device including a pipe parting mole, a length of cable that is engagable to the mole, a cable pulling device and a cable pulling device engagement device that provides a mounting structure for the cable pul...
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6443658 |
An improved method and apparatus for trenchless placement of pipe or conduit that allows termination at a vault or manhole structure without destruction of the vault or manhole. The specific improvement is the means of making the burstin...
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6386298 |
A hole opener and method for using same which allows for a greater number of cone utters to be attached to the hole opener. The support structure provided by the present invention uses a barrel which is attached to the drill stem to effe...
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6305880 |
The basic features of the invention include a pipe parting mole, a length of cable that is engagable to the mole, a cable pulling device and a cable pulling device engagement frame that provides a mounting structure for the cable pulling...
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6250403 |
A device and method for enlarging a bore and installing a utility line. The device comprises an elongate shaft having a first and second end. The first end of the shaft is connectable to the drill string of a horizontal boring machine. T...
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6227311 |
Drill pipe guide apparatus provided for use in conjunction with a pipeline drilling rig as used in drilling substantially horizontal holes for pipe to pass beneath natural or man-made obstruction has a "Vee" shaped trough extending longi...
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6206109 |
An apparatus and method for trenchless, underground emplacement of man-sized product pipe between first and second shaft locations is disclosed. The apparatus comprises a pilot tube assembly having a pilot tube segment and a steering hea...
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6196766 |
An apparatus adapted for movement through a passage formed in the ground includes an elongate element and means for positioning a shroud around at least part of the elongate element for engagement against the periphery of the passage to ...
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6149349 |
A pipe/pulling frame is fitted to the tool end of a movable boom of an excavator, preferably via a quick-attach coupling. The boom first positions the frame in and out of the pit and then secondly holds the frame against twisting movemen...
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6109832 |
A method and an apparatus for new installation or bursting and replacement of underground pipelines, without the necessity of trenches. This method and apparatus allows for the installation without the need for large excavations at the e...
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6109831 |
A utility power unit (10) for underground drilling and pipe laying operations comprises a stationary frame portion (12), a movable frame portion (14) capable of performing sliding movement relative to the stationary frame portion (12) an...
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6109828 |
A bore hole support system is formed from a flexible liner that is readily everted within a bore hole and forms a bore hole support system to install a casing in the bore hole while supporting the bore hole walls. After a pilot hole is d...
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6098708 |
An apparatus for pulling a pipe (12) into an earth bore, especially for replacing a breakable supply conductor laid in the earth, includes an approximately conical displacement head having a cylindrical tubular shaft (18) connected to it...
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6082471 |
A boring head is provided for use in mounting to a drill pipe of a drilling rig for enlarging a pilot bore in horizontal boring operations. The boring head has an axial member positioned along a central axis of the boring head for connec...
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6065551 |
The present invention is directed to a rotary mining apparatus. The apparatus includes an elongated housing with a leading end and an opposite trailing end. The apparatus also includes a compression device coupled to the housing. The app...
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