A tong for handling a tubular includes a jaw carrier having an active jaw movable from a retracted position to an extended position relative to the jaw carrier; a cam body disposed about the jaw carrier and rotatable relative to the cam body; and a brake assembly including an first brake member for engaging an upper surface coupled to the jaw carrier.

A gooseneck conduit assembly includes a gooseneck conduit including a vertically-extending portion, an upset formed on the vertically-extending portion, an alignment key extending laterally from the vertically-extending portion, and a lower coupling at a lower end of the vertically-extending portion; a second conduit configured to connect to an auxiliary fluid line connected to and extending along a riser string that extends to a subsea wellhead, the second conduit including a receiving end configured to form a connection with the lower coupling; and a frame configured to be connected to the riser string. The frame includes an upper bracket vertically offset from a lower bracket to which the second conduit is secured, an alignment groove configured to slidably receive the alignment key so as to maintain a coaxial alignment between the vertically-extending portion of the gooseneck conduit and the second conduit, and a locking member pivotally coupled to the upper bracket.

A guide mechanism may include a first jaw and a second jaw pivotably coupled to the first jaw. The jaws may include a guide having a bottom pocket for seating arrangement on a box end of a first tubular and a top funnel for laterally guiding a pin end of a second tubular into the box end. The guide mechanism may also include a linkage system secured to the first and second jaws to control pivoting motion of the jaws. The guide mechanism may also include a bias mechanism coupled to the linkage system and configured to impart a biasing force on the jaws via the linkage system. The biasing force may be adapted to resist opening of the jaws such that opening of the jaws occurs when a lateral force is applied to the guide mechanism that overcomes the biasing force.

A guide mechanism may include a first jaw and a second jaw pivotably coupled to the first jaw. The jaws may include a guide having a bottom pocket for seating arrangement on a box end of a first tubular and a top funnel for laterally guiding a pin end of a second tubular into the box end. The guide mechanism may also include a linkage system secured to the first and second jaws to control pivoting motion of the jaws. The guide mechanism may also include a bias mechanism coupled to the linkage system and configured to impart a biasing force on the jaws via the linkage system. The biasing force may be adapted to resist opening of the jaws such that opening of the jaws occurs when a lateral force is applied to the guide mechanism that overcomes the biasing force.

A modular boost system can be added to a jack to enable greater lift capacity of the jack. One example can involve a jack that is positionable at a well surface for moving a tubing string through a wellbore in a subterranean formation. The jack can include a frame and an adjustable plate that is alternately (i) attachable at a stationary location in the frame for fixing the adjustable plate at the stationary location or (ii) detachable from the stationary location in the frame to enable the adjustable plate to vertically move within the frame. A boost cylinder can be removably coupled to the adjustable plate and a base for selectively supplying an additional lift capability to the jack.

A method of connecting or disconnecting a first tubular to a second tubular includes engaging the first tubular with a power tong; engaging the second tubular with a backup tong; and rotating the first tubular relative to the second tubular. The method also includes, while rotating, monitoring a distance between the backup tong and the power tong and comparing the distance to a first threshold value; and stopping rotation of the first tubular when the distance equals to the first threshold value. According to one embodiment, a tong assembly includes a power tong, a backup tong, a sensor configured to measure a distance between the power tong and the backup tong, and a controller configured to compare the distance to a threshold value.

A method of connecting or disconnecting a first tubular to a second tubular includes engaging the first tubular with a power tong; engaging the second tubular with a backup tong; and rotating the first tubular relative to the second tubular. The method also includes, while rotating, monitoring a distance between the backup tong and the power tong and comparing the distance to a first threshold value; and stopping rotation of the first tubular when the distance equals to the first threshold value. According to one embodiment, a tong assembly includes a power tong, a backup tong, a sensor configured to measure a distance between the power tong and the backup tong, and a controller configured to compare the distance to a threshold value.

A truck-mounted flipped automated operation equipment for a well workover, which includes a derrick and an operation platform. A guide rail is arranged on the front and back sides of the center of the operation platform, respectively, and a hydraulic clamp mechanism is arranged on the guide rail. An inner clamp frame support is arranged under the derrick, and a lifting cylinder is fixed on the left side of the derrick. The piston part of the lifting cylinder is provided with a fixed plate configured to rise and fall with the lifting cylinder, and the right side of the operation platform is hinged on the fixing plate. The fixed plate is further provided with a flipped cylinder. The cylinder barrel of the flipped cylinder is hinged on the fixed plate, and the piston part of the flipped cylinder is connected to the lower part of the operation platform.

A drilling rig is adapted to perform drilling and/or other wellbore related activities. The drilling rig includes a drilling tower, a drill floor with a well center, a slip device arranged at the well center, a tubulars connection makeup and breaking device near the well center, and a top drive system. The top drive system includes a traveling carriage that is vertically mobile along one or more vertical rails of the drilling tower by a vertical motion drive. The system also includes a top drive unit supported by said carriage and including a top drive motor and a rotary torque output member. The system further includes a tripping operation elevator that is adapted to be engageable with a drilling tubulars string or drilling tubulars stand, e.g. with the top end thereof, in order to perform tripping operations. The top drive unit and the tripping operation elevator are each mobile relative to the traveling carriage, and wherein the top drive system is provided with one or more actuators adapted to cause said relative motion of the top drive unit and of the tripping operation elevator so as to provide a drilling mode and a tripping mode.

The invention relates to the introduction of pressurized fluid, e.g. acid, into a subsea well directly from a vessel (33). A fluid injection assembly (20) is fitted to the top of a subsea Xmas tree (3), the assembly (20) including fail safe closed valve (21) which is controlled via a hydraulic line (31) from the vessel. The hose and assembly and valve are designed with an internal bore allowing a large diameter ball to be dropped (required for acid stimulation). The subsea subsea control module (8) on the Xmas tree is controlled from the producing platform.