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7380605 |
A method of forming an energy transfer loop in the earth has the steps of connecting a tubing to a nose member, extending a liquid delivery pipe to the nose member, pumping a liquid through the liquid delivery pipe to the nose member, je...
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7334637 |
A method comprises heating a formation adjacent a selected depth level within a wellbore extending into the formation, forming a temporary liner in the wellbore, measuring a first temperature of the formation at the selected depth level ...
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7036593 |
Apparatus and method for setting cement in the annulus of an oil or gas well during well completion or other similar well operations. An induction heating tool is lowered to a desired position within the well casing and power is supplied...
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6938707 |
A method and a system for minimizing circulating fluid return losses during drilling of a well bore are disclosed. Circulating fluid, or mud, is heated above conventional temperatures for circulating fluids. The heated circulating fluid ...
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6742603 |
A method and system is disclosed for extending the depth of a subterranean borehole that uses heated aqueous fluid to dissolve rock of the subterranean formation. The heated aqueous fluid comprises water and hydroxides of Group I element...
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6659204 |
A pressure and temperature core sampler comprises a tool for recovering cores specifically enabling the evaluation of methane hydrate resources. Because methane hydrate tends to decompose under conditions of pressure decrease and/or temp...
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6591920 |
A fusion drilling process and device for the placement of dimensionally accurate borings, particularly those of large diameter, in rock, in which the waste melt is pressed into the surrounding rock, which is cracked due to the effect of ...
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6536526 |
A method for retarding temperature loss of fluid being produced in a well employs a fluid of low thermal conductivity in the tubing annulus. The tubing annulus extends between the production casing and the production tubing. It extends f...
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6336408 |
Apparatus and method for cooling a component inside a tool includes a container and a plurality of heat sinks positioned in the container. The components are positioned in the container with the heat sinks for maintaining a reduced tempe...
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6216804 |
A pressure and temperature core sampler comprises a tool for recovering cores specifically enabling the evaluation of methane hydrate resources. Because methane hydrate tends to decompose under conditions of pressure decrease and/or temp...
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5964303 |
The description relates to a process and a device for drilling holes in hard rocks like granite, in which the rock to be drilled is exposed to a flame produced by gaseous hydrogen and fluorine together and the reaction products produced ...
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5715895 |
A dual walled pipe string structure defines an annular cavity between the walls into which hard granules may be packed to oppose wall collapse when inserted to high pressure well depths. Segments of pipe thus constructed will reduce the ...
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5022470 |
An autonomous ice penetrator/payload delivery system is provided which, when once launched from its parent vehicle will, upon reaching the surface of the ice automatically right itself to proper orientation with respect to the ice surfac...
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5016716 |
An insulation jacket and method are provided for a tubing carried perforating gun for a subterranean well. A tubular housing is secured at one end to a tubular conduit with a firing head disposed interiorly within the housing. A perforat...
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4926949 |
A thermal jacket shield for a drilling motor which permits drilling operations in high temperature wells without failure of the motor. The thermal shield includes a multiple passageway casing to shroud the motor and through which is circ...
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4834194 |
The invention relates to methods and apparatus for agitating and heating a sub-surface volume of soil to liberate volatile compositions therefrom which are transmitted through a special flow passage created through the soil to the soil s...
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4809790 |
A device for extracting an undisturbed sample of soil to be tested from a subsurface location uses a cutter to remove unwanted soil from above the undisturbed sample. The device is particularly intended for extraction of soil from contam...
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4753302 |
A valveless pneumatic hammer comprising a backhead assembly at one end of a hollow casing and a bit assembly at the other end of the casing, a rod extending into the casing and having a passage out to atmosphere at the other end of the a...
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4741405 |
A spark discharge focused drill provided with one pulse forming line or a number of pulse forming lines. The pulse forming line is connected to an array of electrodes which would form a spark array. One of the electrodes of each of the a...
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4640552 |
A method and apparatus is disclosed for breaking apart large masses of ice wherein a borehole is drilled into a mass of ice, the hole is blocked and pressurized to split the ice mass.
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4516878 |
Tunnels are constructed by freezing soil and removing frozen soil between starting and end shafts of the tunnels. Tunnels are driven in an uncomplicated manner in rapidly changing soils without auxiliary construction means. A hole is bor...
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4512421 |
An apparatus for drilling vertical temperature measuring holes in the top brick of coke ovens includes a guide support vertically fixedly mounted on a horizontal frame on the top surface of a coke oven proper, and a guide pipe shaft conn...
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4494749 |
A caliper seal assembly is adapted to seal two relatively moving parts in a drilling tool or drill bit or other device where a sealing relationship must be maintained under relatively large relative position and tolerance changes between...
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4436158 |
A drill string working tool is provided that may be releasably engaged to and removed from a drill string member. The tool, such as a cylindrical stabilizer body, is positioned around a cylindrical drill string member, the inner diameter...
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4422513 |
When drilling through hydrate-containing strata, instead of increasing the density of the drilling mud to reduce or prevent melting of the hydrates, the density of the mud is maintained at a level sufficiently low to promote melting of t...
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4386663 |
An earth boring bit has a friction or journal bearing with features that allow cooling fluid to be circulated near the bearing. The bit is of the type having rotatable cutters carried by depending bearing pins. A bushing is stationarily ...
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4372378 |
A down hole shut-in device effects a stoppage of effluent from a blown-out oil well by freezing a plug of the effluent within the well. The down hole shut-in device is installed within a conventional tubing string or casing string and in...
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4371045 |
A method and apparatus suitable for stabilizing hydrocarbon cores are given. Such stabilized cores have not previously been obtainable for laboratory study, and such study is believed to be required before the hydrate reserves can become...
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4287957 |
A flow stream of drilling gas in a gaseous drilling fluid circulation drilling system is separated from that drilling gas supplied to the drill string, and the flow stream is reduced in temperature prior to supplying the flow stream to a...
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4215753 |
Disclosed herein is a transportable cooling system for cooling drilling mud in the course of drilling for geothermal sources or deep well drilling. The cooling system includes a mud carrying radiator provided with a water sprinkler assem...
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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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4194794 |
An unsealed rotary drill of the type comprising a bearing shaft, a roller rotatably mounted on the shaft, cutting inserts carried by the roller, bearing for rotatably supporting the roller on the shaft, and a flushing channel terminating...
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4191266 |
Process for drilling a hole in the earth's crust in which the bottom of the drill hole is frozen in front of or near the drill bit by a cold driling liquid in which liquid particles that have been frozen to solid parts or have been solid...
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4185703 |
This invention concerns the production of very deep boreholes. A rotary drilling tool is suspended at one end of a very long line of supporting elements such as a cable. During at least the entire duration of the drilling operation, the ...
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4061197 |
A drilling assembly which is particularly adapted for drilling in regions of the earth having permafrost, comprising a relativey large earth auger including at least one helical flight which is welded to a long central tube. The upper en...
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4046431 |
A bearing assembly for a rotary drilling tool for a continuous mining machine includes inner and outer races having respective annular bearing surfaces and an annular channel formed between the races for water lubrication and cooling of ...
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3964554 |
An invention relating to a rock drill bit assembly primarily adapted for earth boring operations, and more particularly to a rock drill bit assembly having therewithin a temperature-controlled, sealed environ being adapted for the bearin...
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3935911 |
The present invention provides a rotary rock bit with a heat pipe for conducting heat from the bit's bearings. The rotary rock bit includes a bit body with a connection for connecting the bit body to a rotary drill string. At least one a...
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3935910 |
In a method of drilling a bore-hole, the bore-hole is protected against caving in as the drilling proceeds by the simultaneous moulding of a tubing on the bore-hole wall immediately above the drill tool. Preferably a sleeve is first moul...
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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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3926259 |
A method for rendering stresses and strains in a well casing more uniform throughout the length of the casing in a permafrost zone, the permafrost adjacent the casing being at least partially thawed, wherein the permafrost is allowed to ...
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3903974 |
A drilling assembly, deviation sub therewith, and method of using same, wherein the deviation sub is for directional drilling of a well bore, and has an elongate deviation sub body adapted to be positioned in the well bore for extending ...
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3885629 |
The disclosure herein describes a new method of sealing off wells, such as those producing oil and gas in the event of a blowout; the method consists in tapping the well-head with a branch line connected to a supply of liquid carbon diox...
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3883177 |
In a preferred embodiment of the invention, there is provided a subterranean cavern excavated by conventional methods and with conventional support structures and floor, with vertically extending shafts extending downwardly thereto for t...
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3840078 |
A method and apparatus for drilling a hole in rock. An open-ended, hardened, drilling head containing a means for creating high-intensity stress waves capable of spalling rock is utilized to drill the hole. A fluid is passed through the ...
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3774701 |
A method and apparatus for rotary drilling an earth formation with a cutting tool using air as a non-polluting circulating drilling fluid including expansion of cooled and compressed air to cool and clean the cutting tool, to remove cutt...
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3727703 |
Aqueous gas and liquid foams are generated using a gas and an aqueous foamable solution and are used as well circulation fluids in drilling and cleanout operations in holes in permafrost.
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3724562 |
A slim hole drilling power unit which employs at least one electric motor in mechanical connection with the drill pipe for rotating the drill pipe and moving with same as it advances toward and away from the wellbore. The power unit cont...
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3720065 |
A method and apparatus for forming holes in the ground and for freezing the soil forming the walls of the holes for the purpose of temporarily solidifying zones of unstable soil adjacent to excavations and for forming open holes in unsta...
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3650337 |
This discloses a drilling unit in which the drill bit mechanism is placed at the end of the rotor shaft of a motor either by direct attachment to the shaft or by gear. Cryogenic cooling is provided by sending cryogenic fluid into the rea...
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