Abstract:
Real-time or near real-time estimates of reservoir quality properties, along with performance indicators for such estimates, can be provided through use of methods and systems for fully automating the estimation of reservoir quality properties based on geochemical data obtained at a well site.
Abstract:
A centralizer having bow springs in a retracted position to facilitate passage through a restriction. After passing through the restriction, the bow springs may be expanded to support a casing. In one embodiment, the bow springs may be expanded using a movable sleeve.
Abstract:
An isolation valve for use in a wellbore includes: a tubular housing; an upper flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; an upper piston operable to open or close the upper flapper; a lower flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; a lower piston operable to open the lower flapper; an opener passage in fluid communication with the pistons and an opener hydraulic coupling; and a closer passage in fluid communication with the pistons and a closer hydraulic coupling.
Abstract:
A method and apparatus for running a casing string into a wellbore. In one embodiment the string includes an impeller at a lower end thereof. As the string is rotated in the wellbore, the rotating impeller urges fluid into the string.
Abstract:
The disclosure describes a system and a method for locating a cement plug within a wellbore. The system includes a signal transmitter mounted to the cement plug, a receiver at the opening to the wellbore, one clock positioned on the cement plug and in communication with the transmitter, a second clock which is synchronized to the first clock and in communication with the receiver, and a controller for triggering the transmittal of the signal.
Abstract:
The present invention generally relates to a weight setting indicator which is used to indicate that an applied force to a tool achieved or exceeded a predetermined amount. In one asepct, a packer actuator (100) for use with a packer is provided. The packer actuator includes a body (105) with a recess (135). The packer actuator further includes a dog assembly (175) disposed in the recess (135) of the body (105). The dog assembly (175) is configured to set the packer when a force is applied to the packer actuator (100). The packer actuator (100) also includes a setting indicator (200) disposed in the recess adjacent an end of the dog assembly (175). The setting indicator (200) is configured to move from a pre-set position to a post-set position when the force is applied to the packer actuator, wherein the setting indicator (200) is plastically deformed in the post-set position.
Abstract:
An expandable tubular for use in a wellbore includes: a pin formed at a first longitudinal end of the expandable tubular; a box formed at a second longitudinal end of the expandable tubular; a tubular body connecting the pin and the box; and an elastomeric seal disposed in a groove of the box. Each of the pin and box has: a torque shoulder; and a thread. The pin has an asymmetric protrusion formed on an inner surface thereof.
Abstract:
A downhole tool for use in a wellbore having a tool body with a blade assembly slidably mounted thereon and movable between a retracted and an outwardly extended position. The blade assembly is biased towards the retracted position and movable with an actuating force to the extended position. The tool includes an indexer constructed and arranged to facilitate movement of the blade assembly.
Abstract:
A sliding sleeve has an inner sleeve that moves in a housing. For example, the inner sleeve can move open relative to a port in the housing when a deployed ball engages a seat in the inner sleeve. Because the seat and the ball (if remaining) are preferably milled out of the inner sleeve after use, the inner sleeve preferably does not rotate in the housing during milling operations. To accomplish this, an anti-rotation clutch assembly in the sliding sleeve helps prevent the inner sleeve from rotating. A wedged cone is formed on a distal end of the inner sleeve and press fits into a cupped shoulder on the inside of the sleeve's housing.
Abstract:
A method for deploying a tubular string into a wellbore includes: injecting fluid through a top drive and flow sub into a top of the tubular string and lowering the tubular string into the wellbore. The flow sub: connects the tubular string top to a quill of the top drive, is in a top injection mode, and has a closed port and an open bore. The method further includes halting injection of the fluid through the top drive and lowering of the tubular string. The method further includes, while injection and lowering are halted: disconnecting the flow sub from the tubular string top; adding one or more tubular joints to the tubular string and connecting the flow sub to a top of the added joints. The method further includes resuming injection of the fluid through the top drive and lowering of the tubular string.