Adjustable Engagement System for Tool Removal
AssigneeBaker Hughes Incorporated
InventorMalcolm D. Smith
Life of this patent
Estimating the term…
Abstract
A retrieval tool and method for retrieving a remote tool with a threaded connection from a remote location. The retrieval tool includes a rotational drive member which rotates an attachment sub having a complimentary threaded portion. An articulated shaft assembly permits the attachment sub to move laterally and angularly with respect to the axis of the rotational drive member. A fluid conduit supplies fluid pressure for releasing the remote tool.
Claims20
A retrieval tool for forming a threaded connection with a remote tool within a remote location, the retrieval tool comprising:
- a rotational drive element disposed along a central axis and affixed to a running string to dispose the retrieval tool into the remote location;
- an attachment sub having a threaded portion for threadedly connecting with a threaded portion of the remote tool, the attachment sub being rotationally driven by the rotational drive element to form the threaded connection;
- an articulated shaft assembly interconnecting the rotational drive element to the attachment sub to permit the attachment sub to move laterally and angularly with respect to the central axis;
- and
- a fluid conduit carried by the retrieval tool to transmit fluid pressure to the remote tool.
A retrieval tool for forming a threaded connection with a remote tool within a remote location, the retrieval tool comprising:
- a rotational drive element disposed along a central axis and affixed to a running string to dispose the retrieval tool into the remote location;
- an attachment sub having a threaded portion for threadedly connecting with a threaded portion of the remote tool, the attachment sub being rotationally driven by the rotational drive element to form the threaded connection;
- an articulated shaft assembly interconnecting the rotational drive element to the attachment sub to permit the attachment sub to move laterally and angularly with respect to the central axis;
- and
- a positioning assembly to govern movement of the attachment sub laterally and angularly with respect to the central axis.
A method of retrieving a remote tool having a threaded portion from a remote location, the method comprising the steps of:
- affixing a retrieval tool to a running string, the retrieval tool having
- a) a rotational drive element disposed along a central axis and affixed to a running string to dispose the retrieval tool into the remote location;
- b) an attachment sub having a threaded portion for threadedly connecting with a threaded portion of the remote tool, the attachment sub being rotationally driven by the rotational drive element to form the threaded connection;
- c) an articulated shaft assembly interconnecting the rotational drive element to the attachment sub to permit the attachment sub to move laterally and angularly with respect to the central axis;
- and
- d) a fluid conduit carried by the retrieval tool to transmit fluid pressure to the remote tool
- disposing the retrieval tool into the remote location on the running string;
- orienting the attachment sub laterally and angularly via the articulated shaft assembly to align the threaded portion of the attachment sub with the threaded portion of the remote tool;
- threadedly securing the attachment sub to the remote tool by rotation of the running string;
- applying fluid pressure to the remote tool via the fluid conduit;
- and
- withdrawing the running string, retrieval tool and remote tool from the remote location.
Dependencies are inferred from the claim text.