Matches 1 - 50 out of 124 1 2 3 >
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7635034 Spring load seal assembly and well drilling equipment comprising same  
A top drive apparatus for a well drilling head comprises a top drive structure, a seal body and a plurality of resilient members. The top drive structure is configured for being fixedly attached to...
7559359 Spring preloaded bearing assembly and well drilling equipment comprising same  
A well drilling head comprises a housing and a bearing assembly. The housing has a sidewall structure defining a central bore. The bearing assembly includes an outer barrel, an inner barrel,...
7500531 Low speed AC motor for direct drive applications  
A low speed alternating current motor having motor shaft speeds of about 300 is provided, and such motor has application in numerous industries and devices, such as, for example, in top drive...
7464750 Rotary fluid-sealing structure using speed-reduction stages  
The present invention provides for a rotary fluid-sealing structure for a harsh environment which reduces the PV pressure (×velocity) that a sealing system may be exposed through the use of a...
7448454 Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling  
A floating rig or structure for drilling in the floor of an ocean using a rotatable tubular includes a seal housing having a rotatable seal connected above a portion of a marine riser fixed to the...
7392860 Stripper rubber on a steel core with an integral sealing gasket  
An elongated stripper rubber having a converging internal passage extending to a neck portion elastically expanded to snugly receive a drill string. The elongated stripper rubber is adhered to a...
7377334 Rotating drilling head drive  
Methods and apparatus for rotating a stripper assembly in use with a rotating drilling head. A drive system is disposed external to the rotating drilling head and generates rotational motion to...
7350595 Drilling device and drilling method  
A drilling device is composed so as to drill a drilled object composed of a brittle material with the end of a rotating core bit by using a core bit in which a bit, formed by dispersing and...
7237623 Method for pressurized mud cap and reverse circulation drilling from a floating drilling rig using a sealed marine riser  
A method for drilling in the floor of an ocean from a floating structure using a rotatable tubular includes a seal housing having a rotatable seal connected above a portion of a marine riser fixed...
7228920 Drilling apparatus and method for introducing a drilling element into the soil  
The invention relates to a drilling apparatus and a method for introducing a drilling element into the soil. The drilling element is rotatably and slidably supported on a mast, with a torque being...
7198098 Mechanical connection system  
A connector system is provided for connecting parts of an apparatus. A first part having one or more bayonet connectors and one or more retention pin receptacles cooperatively mates to a second...
7137453 Remote operated actuator system for drill string internal blowout preventer  
An air swivel ring includes a non-rotating member having an air inlet, a rotating member having an air outlet, and a split seal having a first sealing surface and coupled to one of the non-rotating...
7134513 Drive mechanism for boring machine  
An auger boring machine includes a track having an initial end and a terminal end, and the track is provided with a rack. The boring machine also includes a sled that is mounted on the track and...
7111676 Pipe centering device  
The preferred embodiment includes methods and apparatus for locating a member within an aperture. One preferred apparatus generally includes a housing containing at least one rotatably connected...
7028787 Tong for wellbore operations  
A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow...
6896048 Rotary support table  
A rotary seal assembly for a rotary support table for use in drilling systems and the like to provide pressurized fluid to a rotary slip assembly disposed within the rotary support table is...
6896076 Rotating drilling head gripper  
A rotating drilling head seals around drill pipe while drilling. The drilling head has an outer housing that mounts to the rig floor. An inner housing is rotatably mounted in the outer housing. An...
6814161 Stakedown assembly for a horizontal directional drill  
A stakedown assembly for a horizontal directional drill that multiplies the travel of a hydraulic cylinder so that the drive head travels twice the distance of the hydraulic cylinder travel. A gear...
6796390 Method and device for moving a tube in a borehole in the ground  
A tube ( 1 ) in a borehole ( 2 ) in the ground ( 3 ) is displaced. The tube is simultaneously displaced along and about its axis, such that it is axially introduced into or retracted from the...
6725951 Erosion resistent drilling head assembly  
A rotary drilling head assembly for a well bore, including an erosion resistant bowl apparatus. The bowl comprises a bowl member, the bowl member having a central receiving cavity configured to...
6659127 Relief valve  
A dribble less pressure relief valve for power swivels includes a relief valve body, a valve seat insert for the body, a plunger valve element to seat against the insert, and a biasing means to...
6619389 Pipe spinning apparatus  
A pipe spinning apparatus connected in a drilling string for threadably connecting or disconnecting joints of pipes is provided. The pipe spinning apparatus includes a rotatable stem for connecting...
6608565 Downward communication in a borehole through drill string rotary modulation  
A method for downward communication in a borehole containing a pipe string, comprising the steps of: imparting a series of rotary motions to an upper portion of the string, the rotary motions...
6520253 Rotating drilling head system with static seals  
A rotatable head assembly wherein there is an outer housing that carries a cartridge assembly that permits rotational movement. The cartridge assembly made up of a cartridge housing and cartridge...
6412554 Wellbore circulation system  
A system for continuously circulating fluid to and through a tubular string either of coiled tubing or made up of a plurality of tubulars connected end-to-end while an upper tubular is added to or...
6401841 Rotary table  
A rotary table for a drill string, including a stationary frame having a rotating part arranged therein, and hydraulic equipment such as hydraulic slips (wedge-shaped holding collars) and a...
6378630 Locking swivel device  
A locking swivel device is provided for connection with a proximal end of a drill string and for conducting a drilling fluid to the drill string. The device is comprised of a housing and a mandrel...
6354385 Rotary drilling head assembly  
The rotary drilling head assembly of the present invention includes a housing having a bore for receiving a drive member. The drive member has an outer diameter of less than 17 ½ inches to pass...
6293359 Pressure control of a drilling apparatus  
Apparatus for blast hole drilling includes a hammer and drill bit driven by a hydraulic drive motor outside the hole through a drill string extending along the drilled hole to the drill bit. The...
6263982 Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling  
A floating rig or structure for drilling in the floor of an ocean using a rotatable tubular includes a seal housing having a rotatable seal connected above a marine riser fixed to the floor of the...
6129152 Rotating bop and method  
A rotating blowout preventer and method is disclosed that includes a flexible bladder that defines a pressure chamber radially outwardly of the bladder for direct activation of the bladder to allow...
6109348 Rotating blowout preventer  
A rotating blowout preventor having a spring-steel reinforced stripper rubber removably mounted in a rotating inner housing, wherein the stripper rubber is sealed against the drill pipe by well...
6082453 Orientation device, particularly for drilling tool or a well equipment  
6024181 Portable top drive  
A portable top drive drilling unit that is a self-contained assembly of components adapted for quick installation in a drilling rig and which requires a minimum of modification to the rig structure.
6016880 Rotating drilling head with spaced apart seals  
A drilling head has a body which lands in an external housing. The body is removably secured to the housing with an annular split ring which is moveable in response to a cam member. The body has an...
5662181 Rotating blowout preventer  
A rotating blowout preventor having at least two rotating stripper rubber seals which provide a continuous seal about a kelly or drilling string having drilling string components of varying...
5586610 Kelly bar having hardened flutes  
A kelly bar for rotary drilling machines comprises a hollow, tubular, elongated body having a plurality of electric arc gouged flutes therein, each flute having a hardened, heat-affected zone...
5450912 Maintenance and extraction of poles  
An apparatus for excavation of earth around a pole embedded in an earth surface comprises a hollow auger in the form of a cylindrical drum with a helical flight about the outer wall thereof. The...
5437341 Multi-drill mounter  
The multi-drill mounter allows any combination of two jack hammers, drills or augers to be simultaneously mounted on a tractor and the like. A flat back panel supports an upper and lower horizontal...
5409073 Rotating head with elastomeric member rotating assembly  
A rotating head having a bowl assembly and a rotating assembly disposed in a bowl opening formed in the bowl assembly. The rotating assembly consists of an elastomeric member having a bearing wall...
5396964 Apparatus and method for processing soil in a subterranean earth situs  
An apparatus for processing soil in a subterranean earth situs. The apparatus includes a parallelogram spotter or positioning portion with a drilling table support portion connected thereto. A...
5396952 Drilling rig kelly spinner  
A kelly spinner for a drilling rig and installation method are disclosed. The spinner is installed directly to a stem of the derrick swivel by means of an adjustable sleeve which fits around the...
5388651 Top drive unit torque break-out system  
A torque break-out system for a top drive drilling unit in a drilling rig. The torque break-out system includes a splined sub which is connected to a tubular member of the top drive drilling unit....
5370179 Drive head for rotary down hole pump  
A drive head for a down hole rotary pump driven from a well head assembly by a drive string that extends through the well to the pump is disclosed. The drive head includes a hollow rotatable drive...
5368083 Telescopic kelly bar apparatus and method  
A telescopic kelly bar assembly for use in drilling large excavations. The kelly assembly consists of a lower outer bar section, at least one middle bar sections and an upper inner bar section....
5361832 Annular packer and insert  
An annular packer (P) with an axial bore (21) includes an elastomer body (23) with inserts (22) partially embedded therein and spaced circumferentially about the axial bore (21). The inserts (22)...
5279365 Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms  
An improved rotary blowout preventer having a rotary housing rotably mounted within an outer housing and carrying an annular packer assembly hydraulically actuated by fluid circulated through the...
5213158 Dual rotating stripper rubber drilling head  
A drilling head with dual rotating stripper rubbers designed for high pressure drilling operations ensuring sealing under the extreme conditions of high flow or high pressure wells such as...
5211251 Apparatus and method for moving track guided equipment to and from a track  
Apparatus and method for moving the top drive of a top drive subterranean drilling system from the drilling track extending along the length of the derrick includes a movable working track, a...
5137084 Rotating head  
A rotating head having a bowl assembly and a rotating assembly disposed in a bowl opening formed in the bowl assembly. The rotating assembly comprises and elastomeric member and a rotating bushing....
Matches 1 - 50 out of 124 1 2 3 >