Class / Patent application number | Description | Number of patent applications / Date published |
166770100 | Moving tubing or cable into an existing well | 54 |
20080230216 | Wireline Entry Sub - A wireline entry sub includes a body having an upper end, a lower end and a longitudinal, center axis therebetween, the body adapted for use with a wellbore string of tubulars; a slot on the body open a depth from a body outer surface to at least the longitudinal center axis; a wireline entry port extending through the body from the slot to open adjacent the lower end; and a wireline pulling device on the sub body to apply pulling force to a wireline. | 09-25-2008 |
20100193179 | Push / pull system and support structure for snubbing unit or the like on a rig floor - In one embodiment, a support structure for use on a rig floor and for supporting a unit used to manipulate tubular components through a wellhead comprises a support plate adapted to securely mount the support structure to said unit, a passage in the support plate of sufficient diameter to allow tubular components to pass therethrough, a plurality of rig engaging members and at least one tensile member mount. The unit used to manipulate tubular components through a wellhead may be a compact snubbing unit or may be a push/pull unit. The support structure may further comprise a worker platform to support a worker above the rig floor. Various push/pull system embodiments, for use on a rig to manipulate tubular components through a wellhead, are also taught. | 08-05-2010 |
20120018142 | Coil Tubing Cable Head with Tool Release, Fluid Circulation and Cable Protection Features - A cable head for use with coiled tubing electric line in well operations has upper and lower housings attached by a shearable connection to allow release of the lower housing and any downhole equipment carried thereon. A piston is slidable within the housing by fluid pumped through the coil tooling to release a locking mechanism that otherwise prevents the shearing disconnect of the housings. Flow ports in the housing to allow pumping or circulation of fluid through the cable head are positioned to remain continuously open, regardless of the piston position, to maximize the range of flow rates over which fluid can be circulated. The electric line of coiled tubing is only stripped of its armor past sealed receipt thereof in a cable passage below the flow path of the fluid, thereby avoiding exposure of the conductor to the fluid to minimize the potential for damage or failure. | 01-26-2012 |
20130075077 | Modular Apparatus for Assembling Tubular Goods - A modular pipe gripping assembly has a universal actuator assembly having a control fluid swivel. An external pipe gripping assembly can be attached to the actuator assembly for gripping the external surface of a section of pipe. Alternatively, the external pipe gripping assembly can be quickly and easily removed and replaced with an internal pipe gripping assembly for gripping the internal surface of a section of pipe. Control fluid pressure is trapped within the actuator assembly, but relieved from a fluid swivel, permitting high speed rotation of the modular pipe gripping assembly and preserving swivel seal life. | 03-28-2013 |
20130192817 | Apparatus for Aligning Tubulars During Placement in a Well - Apparatus is provided for aligning tubulars when a drilling rig is used to lower a string of tubulars into a well. A joint of tubular can be moved to a vertical position above a connector to which it is to be joined and placed at the angle where threads on the joint and connector can be joined at low torque without damage to the threads. The apparatus can be used on a variety of drilling rigs and provides a safer environment for workers on the rig. | 08-01-2013 |
20140048248 | CONTROL LINE RUNNING SYSTEM - A control line running system includes a control line storage unit and a guiding system having a guiding device and a guide rail for guiding a control line from the control line storage unit toward a well center. The system may also include a control line manipulator assembly for moving the control line toward a tubular and a control line clamp for attaching the control line to the tubular. | 02-20-2014 |
20150034297 | Push / pull system and support structure for snubbing unit or the like on a rig floor - In one aspect the invention provides a support structure for use on a rig floor and for supporting a unit used to manipulate tubular components through a wellhead, the support structure comprises a first section, a second section and a central passage of sufficient diameter to allow passage of the tubular components therethrough. When the first section and the second section are assembled together, said sections together are suitable to support said unit used to manipulate tubular components through a wellhead. | 02-05-2015 |
20150060045 | PIPE HANDLING SYSTEM - A pipe handling system for locating a pipe joint in a joining assembly that includes an internal joining tool and an external joining tool is provided. The system includes a gripper configured to grip a surface of the pipe joint; an elevator configured to pick up the pipe joint and position the pipe joint adjacent a string of pipe disposed in the external joining tool; and a deployment assembly coupled to the gripper, wherein the deployment assembly includes a cable that is used to position the internal joining tool inside the pipe joint. | 03-05-2015 |
20150354293 | DRILLING RIG - Embodiments of an offshore drilling rig including a drill floor deck having a hole defining a first well centre; a first mast upwardly extending relative to the drill floor deck; a first hoisting system supported by the first mast and configured for hoisting and lowering tubular equipment through the first well centre; wherein the load bearing structure of the first hoisting system is displaced from and located on a first side of the first well centre; first pipe handling equipment for moving tubular equipment to the first hoisting system so as to allow the first hoisting system to hoist or lower the tubular equipment through the first well centre; wherein the first pipe handling equipment is operable to move tubular equipment at least partly underneath the load bearing structure and/or through a gap formed in said load bearing structure. | 12-10-2015 |
20150354294 | DRILLING RIG - An offshore drilling rig comprising a drill floor deck having a hole defining a first well centre. The drilling rig may further include a first hoisting system configured for hoisting and lowering tubular equipment through the first well centre. The drilling rig may further include first pipe handling equipment for presenting tubular equipment to the first hoisting system so as to allow the first hoisting system to hoist or lower the tubular equipment through the first well centre. The drilling rig may include a mounting structure, separate from the first hoisting system for suspending suspendable auxiliary equipment from an elevated position above the drill floor deck, allowing the auxiliary equipment to be lowered or hoisted through the first well centre; wherein the mounting structure is movable between a lower position for rigging up auxiliary equipment to the mounting structure, and an elevated position allowing lowering or hoisting of auxiliary equipment suspended from the mounting structure through the first well centre. | 12-10-2015 |
20160032667 | HORSESHOE JACK FOR DRILLING, WORK-OVERS AND COMPLETIONS - A jack and push/pull apparatus is provided by attaching to a wellhead an extendable/contractible horseshoe-shaped jack assembly of sufficient diameter to surround and act upon the tubing or casing to be manipulated in the well, the linear action of the assembly being powered between an extended and a retracted position, the assembly having at least one tube-gripping mechanism at the end of the assembly away from the wellhead attachment. Tubing is inserted into the well bore through the assembly and the wellhead, and when injection forces are desired tube-gripping means grip the tubing being injected and the apparatus is powered to a retracted position, forcing the grasped tubing into the well. The operation may be reversed to pull tubing or casing. The assembly can be simply added to the rig while tubing is present on and above the rig's floor. | 02-04-2016 |
20160076314 | METHOD AND APPARATUS TO POSITION AND PROTECT CONTROL LINES BEING COUPLED TO A PIPE STRING ON A RIG - A system for installing control line secured to a tubular string suspended in a borehole includes a first arm having a pivotally secured first end about which a second end is rotatable with a generally vertical plane, and a second arm having a first end pivotally coupled to the second end of the first arm and a second end coupled to a control line retainer. The second arm slidably engages a stationary pathway at a position intermediate the first end and the second end of the second arm. The system also includes one or more cylinders for rotating the first arm and for translating and rotating the second arm within the vertical plane to move the control line retainer along a generally vertical path along the tubular string. | 03-17-2016 |
20160251914 | GEAR BACKLASH ADJUSTMENT MECHANISM | 09-01-2016 |
166770200 | Coiled tubing | 35 |
20080230217 | Apparatus for spooled tubing operations - A spooled tubing unit is provided which permits simultaneous translation and rotation of continuous tubing to drill or conduct other downhole operations in a borehole in subterranean formations. | 09-25-2008 |
20080264626 | TELESCOPIC ANTI-BUCKLING GUIDE SYSTEM - A technique improves the ability to inject coiled tubing at a variety of wells. A telescopic, anti-buckling guide is designed to support the coiled tubing to prevent buckling under operating loads. The telescopic, anti-buckling guide also facilitates connection to a variety of well control stacks of different heights without requiring vertical movement of the coiled tubing injector and without the need for pressure containment members in the guide. | 10-30-2008 |
20080314580 | Integrated Top Drive and Coiled Tubing Injector - An apparatus for conducting earth borehole operations, the apparatus having a base, a mast mounted on the base, and an integrated top drive/CT injector unit carried by the mast for longitudinal movement therealong. | 12-25-2008 |
20090272520 | PIPE INJECTORS AND METHODS OF INTRODUCING TUBING INTO OR REMOVING IT FROM A WELL BORE - A pipe injector assembly is disclosed, comprising: a pipe injector that includes at least three tubing drive units radially arranged around a feed axis along which tubing is fed, the tubing drive units having drive components that are laterally displaceable between a closed condition in which the drive components drivingly engage said tubing and an open condition in which the lateral spacing between the drive components is increased to permit the passage of a coupling of the tubing. A pipe injector assembly is also disclosed, comprising: a pipe injector that includes at least two tubing drive units radially arranged around a feed axis along which tubing is fed, the tubing drive units having drive components that are displaceable between a closed condition in which the drive components drivingly engage said tubing and an open condition in which the spacing between the drive components is increased to permit the passage of a coupling of the tubing; and a set of tubing slips that are laterally displaceable between a closed condition in which the tubing slips grip the tubing and an open condition in which the lateral spacing between the tubing slips is increased to permit the passage of the coupling; in which the pipe injector is displaceable longitudinally relative to the set of tubing slips. | 11-05-2009 |
20100018693 | Pipeline entry system - An apparatus for inserting coiled tubing into a sub-sea pipeline comprising an adaptor which is releasably couplable to an anchor to hold the adaptor in position against lateral and/or vertical forces, the adaptor having: | 01-28-2010 |
20100200214 | Selectably elevatable coiled tubing rig control housed within a water tank - A mobile coiled tubing rig for the drilling and workover of wells is designed to have a control room for the coiled tubing rig positioned within a tank at the forward end of the rig during transport. The control room, stored in the empty tank during transit, is selectably elevated out of the tank to its working position during rig operation. When the control room is elevated, the operator or operators of the coiled tubing rig can see the coiled tubing storage wheel and the coiled tubing injector. | 08-12-2010 |
20100314099 | Adjustable Wireline Sheave for Stuffing Box - A stuffing box assembly for a wellhead intervention has a stuffing box and an adjustable sheave assembly. The stuffing box has a body with a collar for connecting to a wellhead and with a passage for running wireline therethrough. A frame connected to the body has first and second side plates. A hub assembly disposed on the frame has first and second hubs that are rotatable about a first axis of rotation on the side plates. An axle interconnects the two hubs and supports the axle between the side plates. The sheave can rotate about the second axis of rotation of the axel to run the wireline into and out of the stuffing box. The hub assembly can be rotated about its axis of rotation and can thereby adjust the location of the axle's axis of rotation. Rotating the hub assembly can move the sheave away from a fixed guard for rigging up, can change how the sheave lines up with the stuffing box to accommodate different wireline sizes, and can move the sheave away from the stuffing box to allow components of the box to be replaced. | 12-16-2010 |
20110036558 | SPOOLING APPARATUS FOR WELL INTERVENTION SYSTEM - A spooling apparatus for use with a well intervention system. The spooling apparatus comprises a pressure vessel capable of being maintained at the same pressure as the well, a flexible line housed in the pressure vessel such that it can be spooled into or out of the pressure vessel, and guidance means directing the flexible line to the outlet. The guidance means is arranged so as to decouple the angle of the flexible line to the outlet from the windings of the flexible line in the pressure vessel. Moreover, the apparatus can be incorporated into wellhead equipment. | 02-17-2011 |
20110036559 | SYSTEM, METHOD AND APPARATUS FOR CONDUCTING EARTH BOREHOLE OPERATIONS - A system for conducting earth borehole operations comprising a CT carrier, a reel of CT rotatably mounted on the CT carrier, a mast carrier, separate from the CT carrier, a mast mounted on the mast carrier and movable between a lowered position for transport and a position transverse to the horizontal, a top drive carried by the mast, the top drive being longitudinally movable along the mast and a CT injector on the mast carrier. | 02-17-2011 |
20110048693 | Apparatus and Method for Performing Earth Borehole Operations - An apparatus for performing earth borehole operations comprising a base or substructure, a mast mounted on the base, a top drive mounted on the mast for longitudinal movement therealong, the top drive having an opening therethrough and a coiled tubing injector mounted on the mast above the top drive such that coiled tubing from the tubing injector can pass through the opening in the top drive, the apparatus being operable to selectively use the top drive to engage and manipulate a component used in borehole operations while the coiled tubing injector is substantially inoperative and selectively operable to use the coiled tubing injector to inject coiled tubing into an earth borehole while the top drive is substantially inoperative or alternatively using the coiled tubing injector to inject coiled tubing into a tubular string being manipulated by the top drive. | 03-03-2011 |
20110073299 | Lubricator for Use with Coiled Tubing Apparatus and Universal Rig Having Coiled Tubing and Top Drive Capability - A lubricator for use with a coiled tubing injector comprising an elongated housing having a first end and a second end. There is a guide system disposed in the housing for guiding coiled tubing passing through the housing, a first director proximal the first end of the housing to direct the coiled tubing in a first direction and a second director proximal the second end of the housing to direct the coiled tubing in a second direction. | 03-31-2011 |
20120080180 | System, Method and Apparatus for Conducting Earth Borehole Operations - A system for conducting earth borehole operations comprising a CT carrier, a reel of CT rotatably mounted on the CT carrier, a mast carrier, separate from the CT carrier, a mast mounted on the mast carrier and movable between a lowered position for transport and a position transverse to the horizontal, a top drive carried by the mast, the top drive being longitudinally movable along the mast and a CT injector on the mast carrier. | 04-05-2012 |
20120085531 | Cable Monitoring in Coiled Tubing - The present disclosure relates to a coiled tubing unit. The coiled tubing unit may include coiled tubing with a cable disposed within the coiled tubing. Further, the coiled tubing unit may include a spool about which at least a portion of the coiled tubing is wound, an injector header configured to move the coiled tubing, and a cable slack monitoring feature. The cable slack monitoring feature may be configured to detect an accumulation of cable slack in a portion of the coiled tubing. | 04-12-2012 |
20130277042 | Deep Deployment System for Electric Submersible Pumps - A system for deep deployment of electric submersible pumps is described. In an implementation, an electric submersible pump (ESP) power cable has a strength member that enables the ESP power cable to support itself when lowered deep into a well inside a coiled tubing. The self-supporting ESP power cable frees the coiled tubing from having to carry the weight of the ESP power cable, thereby permitting longer runs of coiled tubing to be suspended into the well. The ESP power cable and the coiled tubing can be anchored independently to a wellhead, and a computing device can monitor the weight loads on the ESP power cable and on the coiled tubing. | 10-24-2013 |
20130327515 | ENCLOSED COILED TUBING BOAT AND METHODS - An apparatus including a coiled tubing unit coupled to a drilling rig, and an enclosure surrounding the coiled tubing unit. The coiled tubing unit may include a coiled tubing reel and a coiled tubing injector, wherein the injector may move relative to the coiled tubing reel. The coiled tubing unit is configured to move relative to the drilling rig in both longitudinal and lateral directions. | 12-12-2013 |
20130341001 | MOBILE COILED TUBING UNIT - The present invention is directed to a mobile coiled tubing unit that has a moveable coiled tubing reel and mast. The apparatus itself can be moved laterally using retractable jacks and hydraulic cylinders. The mast is retractable into a mast sleeve. The movable nature of the elements of the apparatus allow for easier alignment with the well head and balanced transportation. The reel can also be raised to increase clearance to facilitate transportation over rough or uneven terrain. | 12-26-2013 |
20140000867 | MOBILE COILED TUBING REEL UNIT, RIG AND ARRANGEMENTS THEREOF | 01-02-2014 |
20140000868 | Floating Clamping Device for Injection Head of Continuous Oil Pipe | 01-02-2014 |
20140014317 | DRUM UNIT WITH AN ARCH COMPENSATOR FOR A WELL INTERVENTION STRING - A drum unit for an intervention string for a well includes a drum with a drum axis and with a radius, arranged in a structural frame and rotatable by a motor and a tension compensator. The tension compensator includes a guide arch displaceable in a direction generally along the intervention string, orthogonal to the drum axis, using a first force device connected to the structural frame for keeping the intervention string in tension. At least a first end of the guide arch is laterally displaceable in a direction generally orthogonal to the intervention string, parallel with the drum axis. The intervention string runs between the guide arch to or from the first end to the drum. The intervention string runs via a second, opposite end of the guide arch via a second, fixed guide at the structural frame, directly or indirectly to or from the well. | 01-16-2014 |
20140076533 | Modular Coiled Tubing Unit - A coiled tubing unit includes a coiled tubing reel skid comprising a load supporting skid frame having a plurality of guide post sleeves and a reel skid landing platform comprising a plurality of guide posts that mate with the plurality of guide post sleeves, wherein mating of the guide posts with the guide post sleeves is configurable so that the coiled tubing reel skid is disposable at multiple positions on the landing platform. The coiled tubing unit is configurable for many different weight distribution requirements. | 03-20-2014 |
20140332204 | Quick Drum Connect - A winch drive assembly includes a drum having a cylindrical spool located axially between a first hollow annular flange and a second substantially circular flange having a central axle. A hydraulic motor has an inner stator and an outer rotor, the outer rotor of which releasably engages the first hollow annular flange of the drum. A braking system is positioned adjacent the outer rotor of the hydraulic motor and a support member releasably engages the central axle of the second flange of the drum. | 11-13-2014 |
20160040488 | Injector Head Tilt Mechanism - A tilt mechanism for manipulating an injector head mounted on a tiltable platform attached at one end to a pivot mount on a base structure includes an articulated member attached between the tiltable platform and the base structure, the articulated member having a joint and a cylinder attached between the base structure and the articulated member, wherein an arm of the cylinder is extended to push the joint of the articulated member to an over-center position, thereby locking the articulated member. | 02-11-2016 |
20160097244 | Method for Increasing the Roughness of Injector Gripper Blocks for Coiled Tubing Operations - A method of increasing a roughness of coiled tubing injector blocks that includes providing a pair of gripper blocks each having a gripper surface configured to grip coiled tubing within an injector head and increasing a first roughness on the gripping surfaces to a second roughness. A coating may be applied to the gripping surfaces to increase the roughness. The coating may be chromium carbide, molybdenum boride, iron boride, titanium boride, or a transitional metal boride. The gripping surfaces may be treated to increase the roughness to a second roughness. The gripping surfaces may be blasted by abrasives or shot peened to increase the roughness. The second roughness may be greater than 20 μm. A system to inject coiled tubing into a wellbore may include an injector head, coiled tubing, and at least two gripper blocks having a gripping surface with a roughness of at least 20 μm. | 04-07-2016 |
166770300 | Chain injector | 12 |
20080251248 | Lubricator For Use With Coiled Tubing Apparatus And Universal Rig Having Coiled Tubing And Top Drive Capability - A lubricator for use with a coiled tubing injector comprising an elongated housing having a first end and a second end, a guide system disposed in the housing for guiding coiled tubing passing through the housing, a first directo proximal the first end of the housing to direct the coiled tubing in a first direction and a second director proximal the second end of the housing to direct the coiled tubing in a second direction. | 10-16-2008 |
20080296013 | Top mounted injector for coiled tubing injection - A tubing injector unit for use in inserting and withdrawing coiled tubing from a well bore hole having in its structure a tubing injector component, a gooseneck component and a mounting component for connection of the overall unit to a supporting structure such as a mast. The mounting component has an upper area for carrying the gooseneck component thereon and a lower underside area forming an injector component supporting structure. The unit in operation thereby supports the injector component in a suspended condition beneath the mounting component so that the working forces which develop in inserting and withdrawing tubing in a bore hole are transferred separately to the mounting component by the injector component and the gooseneck component and thus directly to the supporting structure by the mounting component. | 12-04-2008 |
20100132935 | Gripper Block - A gripper block for conveying continuous rod in a well bore comprises a carrier body formed of a first metal and arranged to be mounted on one of the pair of continuous drive chains of a continuous rod conveying apparatus. A gripping element supported on the carrier body is arranged to engage the continuous rod and is readily separable from the carrier body. The gripping element is formed of a second metal which is softer than the first metal of the carrier body and softer than the continuous rod. | 06-03-2010 |
20110048694 | GRIPPER FOR COILED TUBING INJECTORS - The current invention relates to an improved gripper for use within a coiled tubing injector unit. The improved gripper comprises a carrier for securing the gripper to the chain drive mechanism of the coiled tubing injector unit and a gripping shoe carried by the carrier. The improved gripper provides a carrier and a gripping shoe designed to permit quick and easy removal and replacement of the gripping shoe in the field during operation of the coiled tubing injector unit. | 03-03-2011 |
20120217001 | GRIPPER FOR COILED TUBING INJECTORS - The current invention relates to an improved gripper for use within a coiled tubing injector unit. The improved gripper comprises a carrier for securing the gripper to the chain drive mechanism of the coiled tubing injector unit and a gripping shoe carried by the carrier. The improved gripper provides a carrier and a gripping shoe designed to permit quick and easy removal and replacement of the gripping shoe in the field during operation of the coiled tubing injector unit, | 08-30-2012 |
20120222855 | Multi-Faceted Gripper Block for Coiled Tubing Injector - An improved multi-faceted gripper block to improve the interchangeability of gripper blocks when the need arises to change the size of the diameter material (e.g. tubing, cable, plastic, wire, hoses, or pipe) or to improve the interchangeability of gripper blocks when the need arises to change one or more gripper blocks due to unservicability. The gripper block assembly comprises a carrier body being connectable to a gripper chain in an injector apparatus, a removable and rotatable gripper block insert having one or more longitudinal sides created with one of many types of known gripping channels or surfaces for engaging tubing or other or other such elongated items. The gripper block insert can be secured into the carrier and can be removed and then replaced or rotated without removing a serviceable carrier. | 09-06-2012 |
20130240198 | COIL TUBING INJECTOR APPARATUS AND METHOD - A coiled tubing injector apparatus for inserting and/or removing coiled tubing from a well head comprising a first injector column and a second injector column forming a central pathway within a frame. The first and second injector columns each comprise an inner and outer band, the outer band containing a plurality of rolling elements for engaging the coiled tubing and the inner band creating drive force to energize the outer band. The inner band further comprises a wear plate designed to sustain the majority of wear for less costly maintenance and repair of injection heads. | 09-19-2013 |
20140034292 | TUBING INJECTOR WITH BUILT IN REDUNDANCY - A tubing injector has a first injector pair and a second pair of cooperating injector mechanisms. The first injector pair are positioned on a first track and the second pair are positioned on a second track. The tubing injector provides redundancy to address safety concerns. The first injector pair is movable to the engaged position, when the second injector pair is moved to the disengaged position and vice versa. | 02-06-2014 |
20140041853 | Coiled Tubing Injector Skate - A coiled tubing injector skate having rollers that independently adjust position to more uniformly distribute roller loading forces is provided. The skate includes a frame and at least one roller having a roller shaft with a first end retained by the frame and a second end retained by the frame. A first resiliently compressible material is disposed between the first end of the roller shaft and the frame. A second resiliently compressible material disposed between the second end of the roller shaft and the frame. | 02-13-2014 |
20140060807 | INJECTOR FOR LOGGING OR INTERVENTION STRING - A well logging- or well intervention string injector includes two adjacent motorized endless chains with gripper elements for bearing against the string. The gripping elements have an engagement packer against the string. The gripping elements run over the back supporting rollers carried by separate back supporting roller brackets. The back supporting roller brackets further bear against an elongated hydrostatic pressure equalizing cushion with hydraulic fluid. The pressure equalizing cushion bears against a back supporting rail. | 03-06-2014 |
20140290932 | Gripper Assembly for a Coiled Tubing Injector - The present disclosure provides an improved gripper shoe for a coiled tubing injector having a gripper shoe having a plurality of arcuate gripper elements spaced apart at predetermined intervals, a gripper carrier having a base having an upper surface and a lower surface, a first wall and a second wall located on the upper surface of the base, means for securing the gripper carrier to a continuous chain of a coiled tube injector located on the lower surface of the gripper assembly, and means for securing the gripper shoe to the gripper carrier, such that the gripper shoe is securely received by, and releasable from, the gripper carrier. | 10-02-2014 |
20160069143 | Spherical Ball Skate for Continuous Well String Injectors - A skate for an injector apparatus in which gripper dies on a pair of endless chains driven around respective closed loop paths on different sides a continuous wellbore string are forced against the continuous string by forcing a set of the skates toward theretoward from inside the closed loop paths of the endless chains. The inventive skate features a skate body carrying a plurality of spherical balls that are exposed on a side of the skate that faces toward the continuous string in order to allow riding of endless chains over exposed surfaces of the spherical balls as the endless chains are driven through the respective closed-loop paths, whereby the gripper dies ride over the spherical balls of said skates under the forcing of said skates toward the continuous string. | 03-10-2016 |
166770400 | Piston and cylinder | 6 |
20080257539 | Well tubular running tool - A casing running tool comprising an integral elevation module and make-up/torque module. In accordance with one aspect or the invention, the tool is adapted to automatically engage a collared end of a tubular structure such as a casing string segment. The integral make-up/torque module is actuated by hydraulic control lines to exert compression force upon the outer diameter of a tubular, such as a casing string segment. This compression force is sufficient to enable torque to be applied to the tubular without slippage. In one embodiment, the make-up/torque module comprises an outer body carrying a plurality of hydraulically-actuable pistons, such that the tool is actuable from the rig floor to grasp the tubular with sufficient force that rotational force (torque) supplied via a drive motor in a top-drive rig. In accordance with another embodiment, the multifunction tool further includes an internal ball valve assembly for selectively allowing or restricting fluid flow through the tool. The elastic strength of biasing means on either end of the ball valve assembly takes into account possible over- or under hydraulic pressures which may exist within the tubulars already deployed | 10-23-2008 |
20100071891 | Apparatus For Pumping Fluids From A Well - An apparatus for pumping fluids from a well having a production tubing extending from a wellhead of the well downhole to a downhole location. A pump having a pump barrel connected to a bottom of the production tubing, and a plunger reciprocable within the pump barrel for lifting fluid from the bottom of the well up through the production tubing and to the wellhead as the plunger upstrokes, and for filling the barrel below the plunger as the plunger upstrokes. A sealed housing attached to the wellhead with the production tubing in fluid communication with the interior of the sealed housing. A cable drum positioned within the interior of the sealed housing. A prime mover operably connected to the cable drum for rotating the cable drum and a cable wound on the cable drum for winding and unwinding by rotating the cable drum. The cable extending downwardly through the production tubing and attached to the plunger. Controls for operating the prime mover for rotating the cable drum to reciprocate the plunger within the pump barrel. | 03-25-2010 |
20100224357 | COMPACT SNUBBING UNIT - A snubbing apparatus for moving well tubing through a blowout preventer including a support frame, a standing tubular engaging assembly, a pair of linear actuators, and a traveling tubular engaging assembly. The actuators have a cylinder and a rod, and the cylinder has an upper end and a lower end. The cylinders are connected to the support frame in a diametrically opposing relationship to one another and with the lower ends of the cylinders extending downwardly beyond the lower end of the support frame and spaced apart from one another a distance sufficient so that the lower ends of the cylinders are positioned on opposing sides of the blowout preventer when the support frame is connected to the blowout preventer. | 09-09-2010 |
20130020067 | MOBILE HYDRAULIC WORKOVER RIG - A hydraulic workover rig including a base structure, a derrick extending from the base structure, a hydraulic lift cylinder connected to the upper end of the derrick, a lower slip assembly connected to the base structure, an upper slip assembly, and at least two snub cylinders connected to the base and the upper slip assembly. A distal end of a piston rod of the lift cylinder is connectable to a pipe string extendable through the upper and lower slip assemblies such that both a lifting force and a snubbing force may be applied simultaneously to the pipe string. | 01-24-2013 |
20140014318 | HYDRO PNEUMATIC LIFTING SYSTEM AND METHOD - The disclosed invention introduces an efficient lifting mechanism for reciprocating vertically a load system, the load consisting of the aggregate weights of a cargo payload in conjunction with “dead weights” of moving parts of the lifting apparatus. | 01-16-2014 |
20150144325 | VOLUME SYNCHRONIZER FOR TUBULAR HANDLING TOOLS - A control system is configured to actuate a tubular handling tool. The system includes a fluid source and a tubular handling tool having a plurality of piston cylinders and a plurality of slips configured to engage a tubular string. The system also includes a volume synchronizer having a plurality of first chambers in fluid communication with the fluid source, a plurality of second chambers in fluid communication with the piston cylinders, a piston separating each of the first and second chambers, and a rod member connected to each piston. Pressurized fluid supplied to the first chambers simultaneously moves each of the pistons to simultaneously force pressurized fluid out of the second chambers and into the piston cylinders to actuate the slips into engagement with the tubular string. | 05-28-2015 |