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WO/2007/149112A1 |
An aqueous mixture of a non-toxic, low pH, antimicrobial, acidic composition having a pH between approximately 0.5 and approximately 3.5 is used in a drilling fluid and a stuck pipe additive. One embodiment of the stuck pipe additive com...
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WO/2007/140612A1 |
A method for reverse circulating a tool upwardly through a wellbore, the method including: providing a manipulator tool including an upper end and a lower end, conveying the manipulator tool down hole to a position adjacent a downhole to...
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WO/2007/136667A1 |
A downhole magnetic debris tool (100) is disclosed that may be connected to the bottom of a packer isolation plug. The downhole magnetic debris tool may include a magnetic shield assembly (90) that shields the magnets (110) and prevent t...
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WO/2007/114706A1 |
The present invention relates to an adapter device for controlling the impact movement of two oppositely facing hydraulic hammers (1, 2). The invention is characterized in that it comprises two cylindrical main parts (8, 9) being mutuall...
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WO2007030262B1 |
Disclosed is an improved spear head overshot. The spear head overshot is particularly useful as part of a cable-guided fishing assembly. The spear head overshot essentially comprises one or more pivot lugs, the pivot lugs comprising jaw ...
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WO/2007/051969A1 |
Zonal isolation of well bores is often desirable for performing downhοle operations such as stimulation operations. In certain embodiments, diverter plugs (310) for achieving zonal isolation in a casing string (330) in a well bore may c...
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WO/2007/051970A1 |
Zonal isolation of well bores is often desirable for performing downhole operations such as stimulation operations. In certain embodiments, diverter plugs (310) for achieving zonal isolation in a casing string (330) in a well bore may co...
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WO/2007/041778A1 |
An overshot tool (10) for bore hole operations comprising a lower end portion (11) including lifting dogs (12) for engaging an article such as a tube in a bore hole, a first jar staff (15) engaged with the upper end of the lower end port...
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WO/2007/030336A2 |
A C-plate assembly for use in a cable-guided fishing assembly is disclosed. The disclosed invention provides a C-plate assembly in which a closure member is slidable from an open position, which allows a wellbore tubular or other item to...
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WO/2007/030293A2 |
A cable hanger for use in a cable-guided fishing operation is disclosed. The disclosed invention provides a cable hanger in which a specially-shaped hanger body is connected to a handle having a cable groove running through it. The cable...
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WO/2007/019594A1 |
The invention relates to a method and a device for releasing a block on a bore-crown (1) during a boring process, especially percussion boring or rotary percussion boring, for boring holes in the ground or rock, whereby a borehole is for...
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WO/2007/014006A1 |
Disclosed is a tubing connection release system. The system comprising, a male connector (14) having a profile at one end thereof and receptive to a tubular at one end thereof, a female connector (12) receptive to a tubular at one end th...
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WO/2007/006137A1 |
A well tool for applying a pulling or a pushing force to an object in an interior of a well bore comprising: a) an inner member comprising a first elongated member, a second elongated member and an actuation means axially interconnecting...
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WO/2007/001187A1 |
A hydraulic hammer is built up around an inner cylindrical string section (1) and an outer cylindrical mantle consisting of cylindrical sections (4, 6) , and (8) connected to adapters (5) and (7). The impact hammer is driven by liquid pr...
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WO/2006/135787A1 |
An apparatus is disclosed for adapting a combination of well tubulars in a string to accept a single filling and circulation apparatus and to eliminate the need for bails and elevators. In addition an adapter and a new filling and circul...
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WO/2006/116094A1 |
A vibratory tool for downhole use is capable of letting a wireline or other tools pass a passage therethrough that can be subsequently closed by landing a plug on a seat. The dump valve (12) is disposed annularly about the central passag...
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WO/2006/107215A1 |
The present invention relates to a means and method for providing hydraulic load compensated time delay in downhole well operations. The means according to the invention is characterized in that it includes a piston stem (1) enclosed by ...
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WO/2006/102622A1 |
A magnetic tool for retrieval of metal debris from a well bore particularly adapted for use in coil tubing systems. The tool has a cylindrical body and a plurality of separate magnet assemblies mounted on the tool body. The magnet assemb...
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WO/2006/082421A1 |
The present invention provides an apparatus (10) and method for transmitting torque to a downhole device. The apparatus (10) comprises a first part and a second part adapted for connection to the downhole device. The apparatus (10) also ...
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WO/2006/077372A1 |
Fluids and associated methods useful in subterranean applications are provided. More particularly, methods of reducing drill string sticking are provided, which include: providing a spotting fluid composition comprising a water insoluble...
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WO/2006/045248A1 |
The present invention discloses a high-energy gas fracture tool for through-tubing operation. The tool includes a blast head and a fracturing bullet connecting with blast head. An electric detonator is provided in the blast head, and the...
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WO/2006/020952A2 |
A fully-parallelized, highly-efficient compositional implicit hydrocarbon reservoir simulator is provided. The simulator is capable of solving giant reservoir models, of the type frequently encountered in the Middle East and elsewhere in...
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WO/2006/006867A1 |
The invention relates to a jar operated by fluid pressure, specially designed for use in drilling or maintenance operations carried out in oil or gas wells. The jar comprises a first (1) and a second (2) end piece, where the second end p...
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WO/2005/124098A2 |
The present invention relates to a downhole tool for removing metallic debris from a well bore. He downhole tool includes a plurality of magnets disposed on the tool body. The plurality of magnets are arranged in a bucking arrangement su...
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WO/2005/108737A1 |
An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers surround the fish and guide the fish an...
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WO/2005/085585A1 |
A jar (10), for use in a downhole toolstring comprising: a hollow housing (11); a jar mandrel (13); a latch sub (14); one or more latch keys; (16); a cam surface (17); a chamber (23); a compression spring; and an adjuster (24). The hollo...
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WO/2005/083227A1 |
The invention relates to a device for laying conduits for transporting a fluid thereinside by means of a conduit laying ship. The inventive device comprises lower holding means for holding said conduit and lower anchoring means for suppo...
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WO/2005/073499A1 |
A collection device for drilling fluid, including at least one first jaw (38) movable towards a pipe string (20), the first jaw (38) being provided with a first scraper (66), the scraper (66) being arranged to bear sealingly on the pipe ...
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WO/2005/059296A2 |
A side entry sub (22) for use with a drill string (15), where the side entry sub receives a wireline (10) within its inner diameter, includes a device (44) capable of severing the wireline proximate to the side entry sub. It can further ...
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WO/2005/045176A2 |
An impact jar including a biasable member, an impactor and an impactee slidably coupled to the impactor. The impactor includes a first down-hole tool connector. The impactee includes a second down-hole tool connector distal from the firs...
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WO/2005/042916A1 |
A method of running a bore-lining tubing string into a bore comprises running a tubing string, typically a liner string, into a bore while agitating the string. The agitation of the string reduces the friction between the string and the ...
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WO/2005/014970A1 |
A method of imposing a simple harmonic wave of bi-directional vibration on an object (16) stuck in sand (5) in a well bore (WB), where vibrations are imposed in close proximity to the stuck location, and where the harmonic wave has suffi...
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WO/2004/092527A2 |
An apparatus for radially expanding and plastically deforming a tubular member.
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WO/2004/079153A2 |
A method and apparatus for holding and turning a tubular and string of tubulars, such as casing (18), for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear (14) and a clamping head (16), both ...
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WO/2004/074630A1 |
Methods and devices for sensing operating conditions associated with downhole, non-drilling operations, including, fishing and retrieval operations as well as underreaming or casing cutting operations and the like. A condition sensing de...
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WO/2004/057149A1 |
There is disclosed a device for retrieving of metallic objects which are stuck in a well. Devices characterized in that it comprises a magnet and vibrator unit, in that the vibrator unit is arranged to create vibrational forces in order ...
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WO/2004/029407A1 |
An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by hydraulically expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers surround the fish and gui...
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WO/2004/025073A1 |
A method of removing a gravel packed screen to reach another zone is described. The method involves a bottom hole assembly comprising an isolation device for the screen and a tool to latch on to it. A perforating gun is shot off to put h...
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WO/2004/018925A1 |
The invention concerns an assembly system for connecting a pipe, designed to be pulled into the ground, to a pulling device. Said system comprises an assembling element (8), as well as fixing elements (1, 2) capable of being displaced by...
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WO/2004/018831A1 |
A spearhead assembly (10) comprises a base (12) provided with a slot (14) at one end (16) which opens onto an outer surface (13) of the base (12). The outer surface (13) is composed of three contiguous surface portions (18, 20 and 22). A...
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WO/2004/005669A1 |
A method of lining a drilled bore comprises running a tubular (40) into a drilled bore (42) and then corrugating the tubular in the bore. The tubular may also be expanded in the bore. In other aspects of the invention the tubular is corr...
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WO/2004/005668A1 |
A method and apparatus for allowing a downhole drill string to be stuck at one location and continue to rotate above the stuck section. The apparatus provides a method for collapsing the stuck subassembly by reducing its outside diameter...
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WO/2003/100215A2 |
It has been discovered that sticking caused by proppants used in a frac pack or gravel pack operation during hydrocarbon recovery efforts can be mitigated by placing a proppant anti-sticking fluid in a downhole space, such as an annulus ...
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WO/2003/095793A1 |
A method of streamlining expansion of long lengths of tubulars or screen is disclosed. In one embodiment, the expansion assembly is coupled with a length of pipe (34) that acts as a weight and has a length longer than the anticipated sec...
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WO/2003/093624A2 |
A packer retriever (100) having a grapple body (127) rotatably and slideably coupled to a mandrel (102) directly attached to a milling tool (140) can engage a packer (or extension thereof) (142) having a substantially smooth I.D. in a we...
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WO/2003/083252A1 |
After an existing lower rod lock (100) is tightened to keep a pump rod (3000), which extends from a stuck pump rotor, from sliding down into a well, an existing upper rod lock/drive (300) is loosened to allow the rod to slide through the...
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WO/2003/078942A2 |
A fishing (22) with magnet (32, 34) and method for retrieving stray radioactvive bullets (18a, 18b, 20, 21)from aborehole (12) in a subterranean formation (14) after firing radioactive marker bullets (16) from perforating gun (28) in the...
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WO/2003/069116A1 |
A bi−directional jar with bit turning capability is disclosed. Tojar down, weight is set down on the tool and pressure is built up on a piston to move the body up while compressing a spring. When spring force opens the valve in the pis...
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WO/2003/064808A1 |
A downhole vibration tool consisting of a body assembly installed in a work string, and a drop−in dart valve assembly. An open inner bore through the body assembly allow the performance of operations through the body assembly. To activ...
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WO/2003/050383A1 |
An auxiliary method for freeing a drill pipe stuck due to build up of filter cake, which provides a reduction in the amount of force required to free said pipe which comprises: a) Lowering an ultrasonic horn type device down the drill pi...
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