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Class 166/237 - DETENTS OR CLUTCHES


Subclass of Class 166 - Wells
Definition: Devices comprising means for preventing relative movement
No. of patents: 181
Last issue date: 04/05/2011


1          
NumberTitleIssue Date
7918273Top drive casing system
A torque head for gripping tubular members, in at least some aspects, has a housing, grip mechanism secured within the housing, the grip mechanism for selectively gripping a tubular member, the grip mechanism including at least one jaw selectively movable toward and...
04/05/2011
7677304Passable no-go device for downhole valve
A downhole valve has a flow tube hydraulically actuated to open and close a flapper. The flow tube moved to a first position closes the flapper to restrict flow through the valve. The flow tube moved to a second position opens the flapper. A passable no-go device di...
03/16/2010
7373988Liner running system and method
A liner running system for placing a liner in a well bore comprises a latch sleeve connected to the liner and a running tool releasably attached to the latch sleeve. The latch sleeve has a wall thickness substantially the same as the wall thickness of the liner, and...
05/20/2008
7360609Directional drilling apparatus
A general housing encloses a drilling motor that can be disabled to permit optimum rotary drilling practice. A mode selector responds to manipulation of the drilling fluid flow rate and permits activation of the drilling motor to drive a drill bit. The general housi...
04/22/2008
7287607Directional drilling apparatus
A drilling motor is housed in the upper portion of a housing, with a drive shaft extending through a lower portion of the housing. The two portions are coupled by bearing that has an axis of rotation that is tilted a small amount relative to the axes of both portion...
10/30/2007
7252150Downhole tool
A downhole tool including a selectively releasable joint, a downhole drilling assembly including the downhole tool, and a corresponding method. In one embodiment of the invention, a downhole drilling assembly includes a downhole tool having a first body and a second...
08/07/2007
7228910Safety mechanism for weight-set downhole tool
A safety trip button (12) is described for a weight-set downhole tool. The button operates between the tool body (36) and a sleeve (34) of the tool, locking them initially together. When the tool reaches a selected formation (44) in a wel...
06/12/2007
7226090Rod and tubing joint of multiple orientations containing electrical wiring
A rod and tubing connection for coupling two or more joints of tubing sections comprises a plug and a socket. The plug has a plurality of splines and the socket has a plurality of receptacles adapted to receive the plurality of splines. The plurality of splines comp...
06/05/2007
7213656Apparatus and method for facilitating the connection of tubulars using a top drive
An apparatus and method for facilitating the connection of tubulars using a top drive and is, more particularly but not exclusively, intended for facilitating the connection of a section or stand of casing to a string of casing. ...
05/08/2007
7213644Cavity positioning tool and method
In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ...
05/08/2007
7165634Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des...
01/23/2007
7163069Telescopable boring rod mechanism
The invention relates to a telescopable boring rod mechanism with at least two mutually displaceable Kelly rods, which are equipped with means for transmitting a torque to the adjacent Kelly rod. At least one of the Kelly rods is constructed from at least two rod se...
01/16/2007
7152674Disconnect devices
A disconnect device for use as part of a tubing string downhole in an oil or gas well and which comprises a tubular body, at least one slip held within the tubular body, and a sleeve housed within the tubular body to hold the at least one slip in coupling engagement...
12/26/2006
7147068Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des...
12/12/2006
7100697Method and apparatus for reforming tubular connections
The present invention generally relates to methods and apparatus for connecting tubulars and reforming the connection between the tubulars. In one aspect of the invention, the tubulars are aligned, connected, and then reformed at the connection. In one embodiment, t...
09/05/2006
7073598Apparatus and methods for tubular makeup interlock
The present invention provides for an apparatus and methods to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. Additionally, the apparatus and methods can be used to for running in casing, run...
07/11/2006
7066264Method and apparatus for treating a subterranean formation
A service/completion liner having a plurality of downhole selectable indicating tools and being used in sand control (gravel pack) placement systems in conjunction with a straddle packer service tools or with conventional crossover type service tools. Each indicatin...
06/27/2006
7066251Hydraulic jar lock
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 positi...
06/27/2006
7048050Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des...
05/23/2006
7036610Apparatus and method for completing oil and gas wells
A method of drilling and completing a wellbore in a geological formation to produce hydrocarbons from a well comprising at least the following four steps: drilling the well with a retrievable drill bit attached to a casing; removing the retrievable drill bit from th...
05/02/2006
7028585Wrenching tong
Apparatus for applying torque to a first tubular relative to a second tubular, the apparatus comprising a first tong for gripping the first tubular and a second tong for gripping the second tubular, wherein the first tong is provided with teeth around a peripheral s...
04/18/2006
7028586Apparatus and method relating to tongs, continous circulation and to safety slips
A tong system includes an upper tong having grips for gripping a tubular and a rotation mechanism to rotate the grips and the tubular. A lower tong also has grips and a rotation mechanism to rotate the grips to provide rotation to a lower tubular, such that the uppe...
04/18/2006
7025144Wellbore liner system
Wellbore apparatus has been invented which, in at least certain aspects, includes a wellbore apparatus having a tubular member with a top end, a bottom end, a hollow portion, and a window therethrough, a sleeve positioned within the hollow portion of the tubular mem...
04/11/2006
7021374Method and apparatus for connecting tubulars using a top drive
An apparatus for facilitating the connection of tubulars, said apparatus comprising a winch (15), at least one wire line (4, 5), and a device (2) for gripping the tubular (3), the arrangement being such that, in use, the winch (15)...
04/04/2006
7011156Percussion tool and method
A percussion apparatus and method of using the percussion apparatus. The apparatus may be used for delivering an impact to a tubular string. The apparatus comprises a cylindrical member having an internal bore containing an anvil and a first guide profile. The appar...
03/14/2006
7011162Hydraulically activated swivel for running expandable components with tailpipe
An apparatus for use in a wellbore, the apparatus comprises a top body, a bottom body, and a sleeve mechanically connected to the top and bottom bodies. The sleeve movable between a first position to a second position, whereby in the first position, the top and bott...
03/14/2006
7004250Sealing system for the interspace in the transition region between two well pipes of different diameters, and mounting tool for this
A sealing system for the interspace in the transition region between two well pipes of different diameters, and a mounting tool for producing the sealing connection. The mounting tool is lowered via a drilling string through a larger diameter pipe and, with a sealin...
02/28/2006
7004259Apparatus and method for facilitating the connection of tubulars using a top drive
An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a supporting member (13) connectable to said top drive (3) characterized in that it further comprises an internal tool (30) for engaging said tu...
02/28/2006
6997252Hydraulic setting tool for packers
A hydraulic setting tool for packers capable of mechanically setting the packer and opening a valve in the packer in one trip. The tool comprises an outer sleeve and an inner mandrel coaxially disposed within the outer sleeve and adapted to move axially relative to ...
02/14/2006
6976298Methods and apparatus for connecting tubulars using a top drive
An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a stator attachable to said top drive, and a supporting member for supporting a tool, wherein means are provided to allow substantially horizontal movement of said s...
12/20/2005
6889765Submersible well pumping system with improved flow switching mechanism
The invention generally concerns a submersible well pumping system comprising an axially elongated housing and a multi-chamber hydraulically driven diaphragm pump suspended in a well. The pump is driven by a self-contained, closed hydraulic system, activated by an e...
05/10/2005
6712134Modular bi-directional hydraulic jar with rotating capability
A bi-directional jar with bit turning capability jars down when 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 piston, the housing comes down striking an an...
03/30/2004
6662886Mudsaver valve with dual snap action
A mudsaver valve is described that has a bi-directional snap action in opening and closing the valve. The mudsaver valve is adjustable for different mud weights and includes a preassembled valve cartridge for ease of assembly. Furthermore, elevated pressu...
12/16/2003
6634424Downhole control tool
A downhole control tool (20) comprises a first sleeve (22) defining a first profile (28), a second sleeve (24) axially and rotatably movable relative to the first sleeve (22) and defining a second profile (30) for selectively engaging the first profile (2...
10/21/2003
6631768Expandable shifting tool
Embodiments of the present invention disclose apparatus and methods that can be used to mechanically actuate a downhole tool with an expandable shifting tool. One embodiment of the invention is an expandable shifting tool comprising a housing having an ou...
10/14/2003
6598673Wellhead load ring
A wellhead load ring constructed in the shape of a C-ring is pre-installed in a wellhead in a storage position that maintains full bore of the wellhead. The load ring is secured in this position by shear pins. The shear pins are sheared by a tool that pus...
07/29/2003
6516890Apparatus and method for preventing the inadvertent activation of the actuating mechanism of a well tool
A protective member that is disposed within the longitudinal bore of a well tool, the well tool including an actuating mechanism adapted to be mechanically activated from the longitudinal bore. The actuating mechanism includes an engagement section, prefe...
02/11/2003
6505684Hydraulic actuator
The present invention provides a hydraulic actuator adapted for use in downhole well applications that enables control of several hydraulic devices from a single control line....
01/14/2003
6382324One trip seal latch system
A system for permitting deployment of a polished bore receptacle, seal stack and production tubing in a single downhole trip into a wellbore. The system includes a polished bore receptacle, production tubing, a seal stack disposed about the production tub...
05/07/2002
6289986Pump rod drive and torque release mechanism
A pump rod drive and torque release mechanism for use in association with a downhole pump positioned within a well. The pump rod drive and torque release mechanism comprises a central housing having a generally hollow interior, a drive shaft received with...
09/18/2001
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