Tercel IP Limited

Halliburton Company

John Hanton

Jeffrey Bowden Lasater

Stanley Vernon Stephenson

Karl W Blanchard

Herbert John Horinek

Graeme Thomas Marr

Jayson Byrd

Charles D Donaghe

Neil A Pritchard

Thomas Marr Graeme

Jerry N Browning

In certain embodiments, a downhole swivel sub includes a first swivel part configured to connect to a first section of a workstring, and a second swivel part configured to connect to a second section of the workstring. The second swivel part is rotatable relative to the first swivel part. The downhole swivel sub also includes a locking sleeve rotationally coupled with the first swivel part and movable axially between a locking position wherein the first swivel part and the second swivel part are rotationally coupled and an unlocking position wherein the first swivel part is rotatable relative to the second swivel part. The locking sleeve includes at least two first rows of teeth disposed at a same radial position and separated axially on the locking sleeve. The at least two first rows of teeth are configured to engage and disengage with at least two second rows of teeth located on the second swivel part.

Downhole swivel sub and method for releasing a stuck object in a wellbore

The invention relates to a connecting assembly to be plugged into a mating receptacle in a wellbore, comprising a first sleeve including a second sleeve and having a top connecting end and a bottom connecting end, characterized in that: &#x2014;the first sleeve comprises the bottom end and has a top end opposite to said bottom connecting end, said bottom connecting end being provided with an end cap for preventing entrance of materials and capable of being opened; &#x2014;said second sleeve comprises said top connecting end located outside of the first sleeve and has a bottom end opposed to said top connecting end; &#x2014;said connecting assembly comprises a locking mechanism adapted to lock said second sleeve in a position relative to said first sleeve such that the bottom end of the second sleeve is inside said first sleeve, and &#x2014;the dimensions of the first sleeve and second sleeve are adapted such that when said locking mechanism is unlocked, said second sleeve is allowed to move relative to said first sleeve to impinge and open said end cap.

Connecting assembly and receptacle adapted to receive said connecting assembly for connecting two tubing sections, and method for installing and connecting two tubing sections in a wellbore

The invention relates to a swivel sub for a string to be lowered into a wellbore and a method of operation in a wellbore, wherein such swivel sub is used and comprises: &#x2014;a first end provided with connection means for connecting a bottom section of a string; &#x2014;a second end provided with connection means for connecting an upper section of the string; &#x2014;a first member, including the first end and a sleeve portion opposed to the first end; &#x2014;a second member including the second end and comprising a section opposed to the second end and partially located within the sleeve portion; the first member and the second member being arranged to rotate relative to each other.

Downhole swivel sub

The present invention relates to a tool for selectively connecting or disconnecting components of a downhole workstring comprising a drive shaft () and a housing couplable to said drive shaft, and housing comprising first and second housing parts () releasably connected to one another, transmission means such as a reduction gear mechanism (-) coupled to the drive shaft, the transmission means being arranged to selectively connect or disconnect the housing parts by rotating the drive shaft.

Tool for selectively connecting or disconnecting components of a downhole workstring

A cement mixing and pumping simulator comprises actual and virtual equipment. In response to an operator controlling this equipment, signals representing operating characteristics of a cement mixing system realistically represented by the actual and virtual equipment are generated. These signals are communicated for displaying the operating characteristics to the operator so that the operator obtains real-time responses to the operator's control of the actual and virtual equipment. A method of simulating operation of a cement mixing system comprises: operating, at a master control location within actual equipment of the cement mixing system, at least one actual control device of the cement mixing system; operating, at the respective location of each, at least one of the actual equipment located away from the master control location; determining characteristics of material flow through the cement mixing system in response to the operation of the at least one actual control device and the at least one actual equipment without actually flowing material through the cement mixing system; and displaying the determined characteristics in real time with the operating and determining steps. This method preferably further comprises recording data identifying a performance evaluation of an operator in response to a comparison between at least one of the determined material flow characteristics and a corresponding predetermined characteristic.

Growing community of inventors

Dyce, United Kingdom

John Hanton