| Patent Number |
Title Of Patent |
Date Issued |
| 7370698 |
Method and apparatus for transferring rig weight to tubulars |
May 13, 2008 |
| A multi-functional apparatus and method for drilling fluid and cementing operations to set casing in a wellbore for use on either top drive or rotary type rigs. The apparatus and method includes a fill-up and circulating tool, a cementing head assembly, a wiper plug assembly, and a p |
| 7191686 |
Method and apparatus for connecting and disconnecting threaded tubulars |
March 20, 2007 |
| A system for screwing together threaded connections includes a pair of moveable arms which first grip the tubular to provide a contact force against three hydraulically powered drive rollers, that are contained within the arms. The three drive rollers will screw or "spin" the connect |
| 7096948 |
Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
August 29, 2006 |
| A multi-functional apparatus and method for drilling fluid and cementing operations to set casing in a wellbore for use on either top drive or rotary type rigs. The apparatus and method includes a fill-up and circulating tool, a cementing head assembly, and a wiper plug assembly. The |
| 7032678 |
Horseshoe shaped elevator and method for using same |
April 25, 2006 |
| A U-shaped elevator having no doors is provided with first and second latching mechanisms which when contacted by the tubular to be entrapped within the elevator move from a closed position to an open position and which then return to a closed position as soon as the tubular is entra |
| 6968895 |
Drilling rig elevator safety system |
November 29, 2005 |
| The apparatus is connected to a member on the elevator that moves if and when the slips move between the open and closed positions. The member is locked in a preselected position that attends the position of the slips when the elevator is considered safe. When the member is in that safe |
| 6948575 |
Slip manipulating apparatus |
September 27, 2005 |
| The spider for large pipe has a base that straddles a slip bowl and supports an overarm that extends part way around pipe to be supported. The overarm is pivotally attached to the base and is moved vertically by an air bag or power cylinders to move a slip assembly into and out of the |
| 6915868 |
Elevator apparatus and method for running well bore tubing |
July 12, 2005 |
| An elevator apparatus for manipulating well bore tubing includes a circular body having a top and a central cavity around a body axis. The cavity has a diameter allowing the collar portion of the tubing to pass longitudinally therethrough. A plurality of cavity restricting members ab |
| 6675919 |
Tubular piling apparatus and method |
January 13, 2004 |
| A tubular piling apparatus and method for penetrating the soil comprises, in a preferred embodiment, elements such as a drive shoe and/or other earth displacing structures which may be, in one presently preferred embodiment, of larger outer diameter than the surface conductor pipe. In a |
| 6631541 |
Hammer piston handling apparatus |
October 14, 2003 |
| A frame is supported on adjustable jacks for aligning with a pile driver hammer body for removal or installation of the hammer piston. A terminal tube on the frame clamps to the hammer and a powered ram moves the piston. |
| 6595288 |
Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
July 22, 2003 |
| A multi-functional apparatus and method for drilling fluid and cementing operations to set casing in a wellbore for use on either top drive or rotary type rigs. The apparatus and method includes a fill-up and circulating tool, a cementing head assembly, and a wiper plug assembly. The |
| 6568479 |
Horseshoe shaped elevator and method for using same |
May 27, 2003 |
| A U-shaped elevator having no doors is provided with first and second latching mechanisms which when contacted by the tubular to be entrapped within the elevator move from a closed position to an open position and which then return to a closed position as soon as the tubular is entrapped |
| 6557641 |
Modular wellbore tubular handling system and method |
May 6, 2003 |
| A wellbore tubular handling system and method is provided for operation in holding and lowering tubulars, such as casing strings, at a rig site. The handling system utilizes a plurality of interchangeable gripping modules for use with both the elevator slips and the spider. Because the g |
| 6520709 |
Variable length/capacity elevator links |
February 18, 2003 |
| Multi-piece elevator links, which may be of variable length or capacity or both, are produced by cutting a unitary link into two parts and connecting different combinations of shanks and link ends to form the desired elevator link. Rotation of the link ends with respect to the shank may |
| 6508312 |
Flow control apparatus and method |
January 21, 2003 |
| A fluid flow control apparatus for use in a mid-string location in a pipe string being run into a well has an open fluid flow route to the annulus above the apparatus to provide more flow area for upwardly moving fluid. Flow up the upper pipe string bore is resisted to reduce fluid overf |
| 6485061 |
Threaded tool joint for connecting large diameter tubulars |
November 26, 2002 |
| A connector for connecting large tubulars of the type used in oil well tubing, casing and the like, without resorting to welding, to form a pipe string for use in drilling. The connector comprises a pin and box threaded connection having guiding surfaces integral with the pin and box mem |
| 6386283 |
Elevator and spider converter |
May 14, 2002 |
| Shaped plates are provided, one above each side of a spider, to replace the bails and links used to suspend the spider and its pipe payloads. The load applied to the housing suspension hard points, whether ears or lugs, to suspend the spider is transferred to the rig floor by the plates. |
| 6279654 |
Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
August 28, 2001 |
| A multi-functional apparatus and method for drilling fluid and cementing operations to set casing in a wellbore for use on either top drive or rotary type rigs. The apparatus and method includes a fill-up and circulating tool, a cementing head assembly, and a wiper plug assembly. The |
| 6227767 |
Pile driving adapter |
May 8, 2001 |
| A pile driving adapter having at least one surface provided to abut the driven piling with the driver surface profiled to match the surface profile on the end of the piling. A tubular portion is arranged to receive the hammer blows. A transition portion provides rework material for the |
| 5918673 |
Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
July 6, 1999 |
| A multi-functional apparatus and method for drilling fluid and cementing operations to set casing in a wellbore for use on either top drive or rotary type rigs. The apparatus and method includes a fill-up and circulating tool, a cementing head assembly, and a wiper plug assembly. The |
| 5819805 |
Casing thread protector |
October 13, 1998 |
| A new and improved casing thread protector that has a toroidal body of elastomer with a bore to accept a pipe end, thread engagement pads, and a metal band and clamp arrangement extending around its periphery. The bore accepts the end of a pipe with threads to be protected when the threa |
| 5810401 |
Threaded tool joint with dual mating shoulders |
September 22, 1998 |
| A tool joint for use in connecting sections of pipe string for use in drilling. The joint is a pin and box connection of the type used in oil well tubing, casing, and the like. The driveable threaded joint has dual mating shoulders and nose faces on the pin and box members. The connectio |
| 5524672 |
Casing thread protector |
June 11, 1996 |
| A thread protector has a toroidal body of elastomer with a bore to accept a pipe end and a metal band and clamp arrangement extending around its periphery. The body is cut through one side to allow the body to expand peripherally. The bore accepts the end of a pipe with threads to be |
| 4676312 |
Well casing grip assurance system |
June 30, 1987 |
| A casing grip assurance interlock system connected with the elevator and the spider of a well casing installation apparatus including positioning valves respectively actuated by the elevator and the spider to permit actuating fluid pressure to be admitted to either the elevator or the |
| 4429719 |
Pipe thread protector |
February 7, 1984 |
| A pipe thread protector is provided which includes two members, one slidably constrained within the other. The interior member has a guide section which includes internal ridges adapted to engage the threads of a pipe section. When placed in one position within the outer member, this |
| 4372026 |
Method and apparatus for connecting and disconnecting tubular members |
February 8, 1983 |
| A power energized mechanism for connecting and disconnecting pipe connections and the like comprising a housing structure having interconnected therewith a rotatable drive gear that is rotated by means of a suitable motor. A pair of spaced external ring gear elements are interconnect |
