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7455127 |
An apparatus and method for improving the formation of multiple lateral wells in new and pre-existing wellbores, and positive, selective reentry of each lateral well. The apparatus comprises a tubular assembly, which includes an adjustab...
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7431107 |
A coring bit, including an outer hollow coring shaft, and a rotationally uncoupled internal sleeve disposed inside the outer hollow coring shaft. The rotationally uncoupled internal sleeve may be a non-rotating internal sleeve. The rotat...
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7370710 |
An erectable arm assembly for use in a borehole, the erectable arm assembly comprising a main body and an arm member, the arm member being able to move between a collapsed position in which the assembly can be removed from the borehole a...
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7347284 |
The present invention is directed to an apparatus and method for coring a borehole in a hard rock sidewall of a well bore in a subterranean formation for testing purposes. The apparatus includes a drive motor for operation down hole, a f...
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6915853 |
In connection with a method and a tool for preparing a well for the production of hydrocarbons, it is aimed at perforating a casing portion ( 26 ) and working surrounding sediment ( 80 ) in a channel-forming manner. For this purpose the ...
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6889781 |
A method and apparatus for horizontally drilling in wells utilizing a shoe assembly at the down hole end of upset tubing. The shoe assembly includes a fixed section and a rotatable section suspended below the fixed section. An electric m...
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6883611 |
A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a ...
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6615915 |
The present invention is a wellhead system for use in completing at least two well bores from within a single conductor housing. The wellhead system comprises at least one wellhead housing which is supported on the conductor housing and ...
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6588517 |
Apparatus for boring a hole from an inside of a casing outwardly at an angle relative to a longitudinal axis of the casing comprises a drill shoe having a longitudinal axis and being positionable in the casing, the shoe having first and ...
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6578636 |
A method and apparatus for horizontally drilling in wells utilizing a shoe assembly at the down hole end of upset tubing. The shoe assembly includes a fixed section and a rotatable section suspended below the fixed section. An electric m...
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6571867 |
A method and apparatus for forcing drainage devices through the sidewall of a borehole and into the formation to increase oil and gas recovery from the formation. The object usually comprises a plurality of drainage devices, which may be...
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6550553 |
Apparatus for boring a hole from an inside of a tube outwardly perpendicular to a longitudinal axis of the tube comprises a drill shoe having a longitudinal axis and being positionable in the tube, the shoe having an inlet, an outlet per...
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6523624 |
A sectional drive system for transmitting rotational power to an output, which system includes multiple splined drive segments which are nested and interlocked as a drive string that is rotatable in a selected straight or curved path. Th...
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6412578 |
Apparatus for boring a hole from an inside of a casing outwardly at an angle relative to a longitudinal axis of the casing comprises a drill shoe having a longitudinal axis and being positionable in the casing, the shoe having first and ...
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6378629 |
Apparatus for boring a hole from an inside of a tube outwardly perpendicular to a longitudinal axis of the tube comprises a drill shoe having a longitudinal axis and being positionable in the tube, the shoe having an inlet, an outlet per...
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6325164 |
The drilling device is for creating bore-hole branches in unconsolidated rock. The device includes a fully-controllable pilot drill head with drill rods attached thereto. The pilot drill head has an opening on its periphery. The pilot dr...
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6279659 |
An assembly for drilling at least one lateral well from a well bore having a longitudinally premilled window formed therein and having a first orientation key-way member formed in the premilled window and in communication with the premil...
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6276453 |
A method and apparatus for forcing drainage devices through the sidewall of a borehole and into the formation to increase oil and gas recovery from the formation. The object usually comprises a plurality of drainage devices, which may be...
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6199656 |
A rock drilling rig includes a movable carrier with a boom attached to it and movable in various ways. The free end of the boom is provided with drilling equipment. The drilling equipment is enclosed in a casing that prevents noise gener...
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6050351 |
A drilled hole (1) is produced by means of a drilling rod assembly comprig a succession of rod elements (7d) to be arranged end to end. For this purpose, a vertical shaft (2) is produced in the ground, of constant horizontal section and ...
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5911283 |
A sectional drive system for transmitting power linearly or in a curved path to an output, which system includes multiple, tapered and splined, interlocking drive segments which are nested and stacked as a segment string that is rotatabl...
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5810101 |
A digger from a unit for digging utility pole holes is encased in an elongated box. The box has an attachment thereon for attachment to the carrying arm of a backhoe in place of the backhoe bucket. A 90° attachment provides versatility....
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5804713 |
Apparatus for the installation of sensors (37) in channels (31), which apparatus comprises a first channel (31) containing at least one sensor location arrangement (35), the first channel (31) and the sensor location arrangement (35) bei...
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5699866 |
A sectional drive system for transmitting power linearly or in a curved path to an output, which system includes multiple, tapered and splined, interlocking driving segments which are nested and stacked as a segment string that is rotata...
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5687806 |
An apparatus and method are disclosed for applying thrust (weight on bit) to a drill bit when drilling with a flexible drilling shaft while creating perforations in a cased well. The thrust is applied directly to the drill bit instead of...
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5667025 |
A multiple coring bit tool and method for taking multiple core samples of a formation traversed by a borehole in one well logging run. In this tool, multiple coring bits are used to cut the core samples. One bit is used to cut each sampl...
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5622231 |
A method for forming substantially lateral boreholes from within an existing elongated shaft includes positioning a drilling unit within the existing shaft, bracing the drilling unit against a wall surrounding the existing shaft to trans...
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5617927 |
A sidewall coring tool for wireline use in an earth bore hole is provided which includes an elongated tool body adapted for suspension within the bore hole by the wireline cable at a selected depth, low speed high torque rotary coring bi...
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5553680 |
Disclosed herein is a horizontal boring apparatus which is comprised of a remotely controlled drilling tool lowered from a self-contained vehicle into a previously drilled vertical shaft. The tool mills away a 360 degree band of metal ca...
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5487433 |
An assembly for dispensing a core separator ring on the top of a previously-cut core that is ejected from a core-cutting bit in a storage bin. The core separator assembly is integral with the forward end of the core ejector system.
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5431223 |
A kick-off device is provided. The kick-off device is useful in drilling a pair of opposite deviated borehole branches in an under ground formation from a single borehole and comprises an open-ended tube provided at its upper end with co...
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5425429 |
A method for forming substantially lateral boreholes from within an existing elongated shaft includes positioning a drilling unit within the existing shaft, bracing the drilling unit against a wall surrounding the existing shaft to trans...
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5411106 |
A method and apparatus for acquiring a plurality of sidewall cores from an earth formation intersected by a wellbore while a coring tool is located downhole. A sidewall coring tool is provided having an internal core receptacle for recei...
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5209309 |
A sidewall coring device includes a housing (12) which is operable to be disposed on the end of a drill string. A core tube (18) is disposed on one side of the housing on the interior thereof with an opening (20) provided for receiving c...
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4928757 |
A well casing penetrator includes an elongated housing having a work fluid input chamber and enclosing an outwardly movable hydraulic cylinder driven punch for cutting an opening in a casing. A high pressure liquid jet nozzle is mounted ...
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4905777 |
The invention relates to a process and a device for the production of drilling holes from an angled position with respect to the drilling axis, wherein the system has a free-moving drilling support with a drilling machine axially movable...
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4819721 |
A remotely controlled, hydraulically operated cutter apparatus for use in a conduit includes control panel for generating a plurality of control signals for controlling the operation and a source of pressurized hydraulic fluid. Valves ar...
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4790384 |
A well casing penetrator includes an elongated housing enclosing an outwardly movable hydraulic cylinder driven punch for cutting an opening in a casing. A high pressure liquid jet nozzle is mounted on the end of a hose which moves outwa...
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4714119 |
A core drilling mechanism in an elongate housing is rotated from a vertical storage position to a horizontal operable position. This permits the transport downhole of a drilling mechanism of sufficient longitudinal dimension to drill a c...
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4708213 |
An improved hydraulic motor for downhole oil and gas wells to drive a sidewall core cutting apparatus comprising; a motor housing having a fluid inlet channel and a fluid outlet channel directed essentially parallel to each other and tan...
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4691788 |
A lateral hole boring method whereby a lateral hole of a desired length is formed underground by repeatedly performing the following steps. A vertical hole is prepared, and a lateral hole boring apparatus equipped with a leading auger of...
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4640362 |
A well casing penetrator includes an elongated housing enclosing an outwardly movable hydraulic driven punch for cutting an opening in a casing. A high pressure liquid jet nozzle is mounted on the end of a hose which moves outwardly thro...
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4630676 |
A remotely controlled, hydraulically operated cutter apparatus for use within a conduit includes a control for generating a plurality of control signals for controlling the operation of a source of pressurized hydraulic fluid. Valves are...
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4625815 |
The invention relates to a drilling equipment whose annular bit (4) for cutting the rock located in the deepest point of the drill hole is provided with high-pressure water-jet nozzles and is connected via a flexible high-pressure hose p...
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4624328 |
In shaft drilling apparatus for recovery of gas from subterranean formations includes a platform adapted for being suspended by a cable and rotated within a generally vertical shaft in the earth. Drilling and stabilizing apparatus are pr...
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4573541 |
Multi-drain drilling and petroleum production start-up device. This comprises at least one take-off assembly (11) which is fastened in situ in an outer tube of the well and at least one take-off tube (12 to 14) of which communicates by i...
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4527639 |
A system for the formation of a bore hole, particularly for use in enhancing the recovery of oil from an oil bearing underground formation using an assembly including a piston sliding in a guide tube. The forward end of the piston body t...
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4466495 |
This relates to a pressure coring tool to obtain pressurized samples of the formation through which the wellbore is drilled. It includes a housing which supports a guide means along which the drill bit, core barrel and motor can be moved...
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4461360 |
An apparatus for drilling a sidewall core from a borehole which has a cylindrical housing with an opening through which a core bit and barrel are extended and retracted. In a preferred embodiment there is a fixed plate on opposite sides ...
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4449593 |
This relates to sidewall coring tools used to obtain samples of the formation through which the wellbore is drilled. It includes a housing which supports a guide means along which the drill bit, core barrel and motor can be moved to exte...
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