| Patent Number |
Title Of Patent |
Date Issued |
| 7345396 |
Metallic laminations for magnetic circuits |
March 18, 2008 |
| Metallic laminations for magnetic circuits. Some of the illustrative embodiments may be a magnetic circuit comprising a low reluctance magnetic flux path comprising a plurality of stacked metallic laminations (each lamination having an edge), and an air gap in operational relationshi |
| 7296640 |
Solids control system |
November 20, 2007 |
| A mobile solids control system for the processing of drilling fluids. The solids control system includes a suction tank skid, a suction platform skid, a shaker tank skid, and an equipment platform skid. The suction tank skid and shaker tank skid include the drilling fluid storage tanks, |
| 7293618 |
Power slip for drillpipe |
November 13, 2007 |
| This invention relates to a mechanical apparatus for gripping and manipulating tubular members, such as drill pipe. The apparatus is essentially an automated slip puller, which generally comprises a slip base, a pulling mechanism pivotally attached to the slip base, and at least one |
| 7293607 |
Automated system for positioning and supporting the work platform of a mobile workover and well- |
November 13, 2007 |
| A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at |
| 7249639 |
Automated arm for positioning of drilling tools such as an iron roughneck |
July 31, 2007 |
| The invention relates to an apparatus for moving an Iron Roughneck into position to allow making-up or breaking-out of threaded joints in a drill string. The apparatus may also be used to move other drilling equipment into position on the centerline of the well or at mouse holes. A s |
| 7246983 |
Pipe racking system |
July 24, 2007 |
| The pipe racking system is designed to handle drilling tubulars (primarily drill pipe and drill collars) between the racked or setback position and the well center. The racking system can mechanically grasp a stand of pipe, lift the pipe sufficient for free movement, and deliver the pipe |
| 7234896 |
Vertically folding service arm for a movable platform offshore drilling or servicing rig |
June 26, 2007 |
| An apparatus and method for maintaining electrical and hydraulic connections between a junction box (or junction boxes) located on or near an offshore platform's floor and a movable drilling rig structure are disclosed. The disclosed invention is a unique vertically folding service a |
| 7231981 |
Inline compensator for a floating drill rig |
June 19, 2007 |
| An apparatus and method for protecting against the problems associated with heave of a floating drilling rig are disclosed. The disclosed invention is a unique inline compensator in which a plurality of cylinders housed within a tubular housing and a plurality of low pressure and hig |
| 7228919 |
Pivoting pipe handler for off-line make up of drill pipe joints |
June 12, 2007 |
| An apparatus and method for use in the off-line make-up of drill pipe stands on drilling rigs used in the exploration and production of oil and gas reserves are disclosed. The disclosed invention is a pipe handling system in which a section of the V-door ramp attached to a drilling rig |
| 7185881 |
Electric winch |
March 6, 2007 |
| Apparatus and methods for operating a winch system comprising a wire spooled onto a drum rotatably mounted to a shaft. A permanent magnet is mounted to the drum such that, when an electric current is applied to a coiled winding mounted to the shaft, the drum rotates about the shaft. |
| 7178612 |
Automated arm for positioning of drilling tools such as an iron roughneck |
February 20, 2007 |
| The invention relates to an apparatus for moving an Iron Roughneck into position to allow making-up or breaking-out of threaded joints in a drill string. The apparatus may also be used to move other drilling equipment into position on the centerline of the well or at mouse holes. A s |
| 7155873 |
Structural connector for a drilling rig substructure |
January 2, 2007 |
| A method and apparatus for connecting sections of a drilling rig substructure is disclosed. The disclosed invention is a unique structural connector in which sections of a drilling rig substructure can be connected together without the use of pins or pin-type connectors. The structur |
| 7137586 |
Hydraulic spooler |
November 21, 2006 |
| Methods and apparatus for spooling a flexible member onto a drum with a spooler assembly. In certain embodiments, a spooler assembly comprises a spooler arm operable to guide a flexible member onto a drum rotating about a drum axis. A first actuator moves the spooler arm in a first d |
| 7132127 |
Centrifugal applicator |
November 7, 2006 |
| Methods and apparatus for applying a uniform application of an appropriate quantity of pipe dope to the internal threads of a pipe. In general, the preferred apparatus includes a supply of pipe dope and a centrifugal applicator for evenly applying the pipe dope to internal threads. The |
| 7121166 |
Power tong assembly |
October 17, 2006 |
| A tong assembly comprises a body and a center member slidable relative to the body. A pair of clamping arms is rotatably connected to the body. The clamping arms are connected to the center member such that as the center member slides relative to said body, the clamping arms rotate relat |
| 7111676 |
Pipe centering device |
September 26, 2006 |
| 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 ring, and a plurality of tie members spaced evenly about the ring's perimeter. The tie member |
| 7066251 |
Hydraulic jar lock |
June 27, 2006 |
| An internal, positive engagement lock that locks a tool, such as a hydraulic drilling jar, in the fully open position when the tool is racked back and when tripping in and out of the hole close to the surface. The lock mechanism is spring biased into a locked position that provides a |
| 7040411 |
BOP handling system |
May 9, 2006 |
| Methods and apparatus for handling blowout preventer stacks. In one embodiment the handling system includes a cart, or skid, providing a base platform, a tilting frame, and a lifting frame. The stack is attached to the lifting frame, which is slidingly supported by the tilting frame, |
| 6971283 |
Jaw insert for gripping a cylindrical member and method of manufacture |
December 6, 2005 |
| An insert for use in a gripping assembly is disclosed. The insert includes a base member having a plurality of gripping teeth. The teeth are arranged in at least two substantially adjacent rows, where at least one row of teeth is offset or staggered longitudinally from an immediately adj |
| 6923254 |
Washpipe apparatus |
August 2, 2005 |
| Methods and apparatus for providing enhanced seal life of a swivel seal assembly by decreasing the effective differential pressure across a given rotating seal. The differential pressure is decreased by providing a pressurized fluid on the low-pressure side of the seal at a predetermined |
| 6910402 |
Pipe spinner |
June 28, 2005 |
| Methods and apparatus for spinning a pipe using a flexible belt. The spinner utilizes a single actuation mechanism contained within a rigid body to engage the pipe and tension the belt. The pipe is engaged by one or more pivoting arms that are locked into place by pins attached to the |
| 6681858 |
Packer retriever |
January 27, 2004 |
| A packer retriever having a grapple body rotatably and slideably coupled to a mandrel directly attached to a milling tool can engage a packer (or extension thereof) having a substantially smooth I.D. in a wellbore while the packer is milled. The mandrel rotates in a central opening throu |
| 6634436 |
Mobile land drilling apparatus and method |
October 21, 2003 |
| A mobile land rig and method are disclosed, for the transport, assembly, and disassembly of oil drilling equipment. A mobile telescoping substructure box includes at least one axle and coupled wheels lockable and releasable for engaging the ground and being raised above the ground an |
| 6588318 |
Hydraulic retention system for reciprocating pump cylinder liner |
July 8, 2003 |
| A hydraulic system is provided for securing a cylinder liner to a pump module of a reciprocating pump, such as a mud pump. The hydraulic system includes a body attached to the pump module, a ram in sliding contact with the body and having a mating surface, preferably a radial shoulder, |
| 6571667 |
Manual tong safety latch |
June 3, 2003 |
| A latch device for a manual tong apparatus that incorporates a secondary catch mechanism is presented. Such a secondary catch would assist in maintaining the tong assembly in it's closed position during a reversing operation or at a time when load applied to the manual tong device in the |
| 6554523 |
Hydraulic rod connector system |
April 29, 2003 |
| A hydraulic connector assembly is provided to couple an extension rod to a piston rod in a reciprocating pump. The connector assembly utilizes a single hydraulic ram to provide the compressive connecting force between the two rods. The connector assembly includes a mechanism for mechanic |
| 6536467 |
Valve with increased inlet flow |
March 25, 2003 |
| A check valve having a profiled entrance that reduces net positive suction head for piston and plunger pumps. The valve inlet surface has a cross-section that may include a curved portion that corresponds to a portion of a cone, circle, ellipse, hyperbola, or parabola. |
| 6386516 |
Sheave block with retractable sheave guards |
May 14, 2002 |
| A sheave block for use with a wireline includes first and second opposing walls and a shaft extending therebetween. At least one grooved sheave is disposed on the shaft, each sheave being engageable with the wireline. At least one retractable sheave guard is movably connected to the firs |
| 6327940 |
Multi-piece manual tong safety handle |
December 11, 2001 |
| A multi-part handle system that incorporates bumper flanges disposed at opposite ends of a rigid handle device is proposed. The handle mounts to a manual tong apparatus, or any other piece of heavy equipment, by means of weldable or integrally cast brackets and provides a rigid but shock |
| 6227240 |
Unitized spherical profile check valve with replaceable sealing element |
May 8, 2001 |
| A unitized check valve assembly comprises: a valve body having a bore therethrough, the bore having an inlet and an outlet, a valve disk engaging said body at said outlet, a valve retainer engaging the body and surrounding the valve disk and the outlet; a first biasing member in comp |
| 6182945 |
Redundant drawworks |
February 6, 2001 |
| A fully redundant drawworks is provided with two complete and totally independent systems for controlling and powering the drum and drum shaft of the drawworks. Each system broadly comprises at least one source of power (e.g., a motor or engine), a power transmission means, preferably of |
| 5960700 |
Replaceable mud pump piston seal |
October 5, 1999 |
| A piston head assembly for reciprocating in a cylinder is disclosed, the cylinder having an inside surface and the inside surface having an inside diameter, comprising: a piston head including a central portion and a flange, the flange having a diameter that is no more than 0.010 inches |
| 5599497 |
Alloy steel roll caster shell |
February 4, 1997 |
| An alloy steel having particular utility for roll caster shells used in the direct casting of molten aluminum to sheet, consisting essentially of, in weight %, 0.25-0.45% C, 1.75-3.75% Cr, 0.75-2.5% Mo, 0.35 to 0.8% V, 0.4-1% Mn, greater than 0.4-1% Ni, 0.02% max P, 0.02% max S, up to 0. |
