Abstract: A connector (10) is provided. The connector (10) is for connecting to a downhole longitudinal member (12). The connector (10) comprises a gripping sleeve (14) defining an internal bore (16) for receiving the longitudinal member (12) therewithin, wherein the gripping sleeve (14) is configured to grip or to increase grip on the longitudinal member (12) by lengthening the gripping sleeve (14). Also provided area system in which the connector (10) is used, and a method of connecting a connector (10) to a downhole longitudinal member (12).

Abstract: A rotary coring bit and rotary coring tool which includes a core catching torsion spring.

Abstract: A fail safe locking overshot device. The overshot device is connected to a hoisting line for retrieval of a spearhead. The device provides automatic engagement of a mechanical locking system through locking dogs for locking the lifting dogs after capture of a spearhead. Manual disengagement is required to unlock the lifting dogs and release the spearhead.

Abstract: A control line running system includes a control line storage unit and a guiding system having a guiding device and a guide rail for guiding a control line from the control line storage unit toward a well center. The system may also include a control line manipulator assembly for moving the control line toward a tubular and a control line clamp for attaching the control line to the tubular.

Abstract: A method and apparatus for setting a packer assembly having an upper packer and a lower packer in a wellbore in a single trip into a wellbore is provided. The packer assembly is configured to be retrieved from the wellbore using a retrieval tool in a single trip into the wellbore. The retrieval tool is configured to be released from the packer assembly while in the wellbore during a retrieval process in the event that the packer assembly will not release from the wellbore or is otherwise prevented from removal from the wellbore.

Abstract: An overshot tool includes a grapple, a torque sub rotationally fixed to the grapple and a deformable member in operable communication with the torque sub. The torque sub is responsive to torsional movement thereof. A method for retrieving a fish with the tool is also included.

Abstract: A downhole apparatus is described comprising a body and a sealing arrangement located on the body. The body has a longitudinal axis and the sealing arrangement comprises at least one elongated sealing member with an axis of elongation extending around the longitudinal axis. The sealing member comprises a material selected to expand on exposure to at least one predetermined fluid, such as a hydrocarbon or aqueous fluid encountered in a wellbore. A method of forming the apparatus and methods of use are described. Embodiments of the invention relate to wellbore packers.

Abstract: An overshot tool for retrieving an object in a well includes a housing having a housing bore with upper and lower portions. A cam having a cam bore is carried in the upper portion of the bore. The housing and the cam are rotatable relative to each other from an aligned position, in which the cam bore axis and the housing bore lower portion axis coincide, to a misaligned position, in which the cam bore axis and the housing bore lower portion axis are misaligned with each other. The housing bore and the cam bore are open at a lower end for sliding over an object in the well when the tool is in the aligned position. Rotation of the housing and the cam relative to each other causes the cam bore axis and the lower portion axis to move toward the misaligned position, thereby gripping the object for retrieval.

Abstract: An apparatus for gripping a down hole tubular includes a body element defining a central cavity along a longitudinal axis. Disposed within the body element is at least one engaging member. In one aspect, the engaging member has an upper gripping element and a lower gripping element. The gripping elements are designed to be movable with respect to one another. A rod is pivotally attached to the engaging member. The rod moves the engaging member radially inward or outward with respect to the longitudinal axis of the central cavity. In one embodiment, a slewing device is coupled to one end of the body element. The slewing device is moveable with respect to the body element along the longitudinal axis. The rod includes a first end and a second end. The first end is slidably and rotatably connected to the stewing device, such that the first end is radially moveable relative to the longitudinal axis as the stewing device is moved along the longitudinal axis from a first position to a second position.

Abstract: A device and method for retrieving a tool string from downhole locations through the use of one or more engagement sensors. The one or more engagement sensors are activated by the tool string engaging an overshot device. The one or more engagement sensor may be mechanical, electric, or magnetic and may be located at various locations on the overshot device, the tool string, or both. Additionally, any number of engagement sensors may be used at the same time.

Abstract: An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers surround the fish and guide the fish and the latch mechanism together, as the tool is lowered, until the latch mechanism latches onto the fish.

Abstract: An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by hydraulically expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers surround the fish and guide the fish and the latch mechanism together, as the tool is lowered, until the latch mechanism latches onto the fish.

Abstract: A method of providing for a single trip removal of packer tools by providing a flapper valve in the upper packer tools which opens when pressure below the tool exceeds the pressure above the tool to allow the tools to be released and allowing flow up the center of the tubing. Additionally, the retrieval tool seals with the stinger tool during removal to allow flow downwardly around the released packer down to the next lower packer and up through the released packer to work only on the next lower packer. The method also contemplates that increased flow circulation will allow forced flow to clear the next lower stinger from sand and other debris to increase the chance of a successful mating of the retrieval tool to the stinger during removal.