Selectively Retrievable Coiled-Tubing Whipstock Provides Retrieval Options Without Loss of Production

摘要

Coiled-tubing (CT) intervention services involving casing exits require the use of a whipstock assembly, which consists of a milling assembly, concave, and anchor. The anchor secures the concave, keeping it from traveling downhole while performing the sidetrack. The self-orienting packer and latch system provides the option to retrieve the packer on the same trip as the concave and latch or leave the packer in the well as a datum for a lateral or re-entry. The system also allows for torque transmittal from the milling assembly to the packer’s slips. The packer has an open bore that allows production to flow through the packer when it is left in the well. The retrievable whipstock packer and latch system is deployed on coiled-tubing or wireline in normal or sour-service applications for wells that require the flexibility to retrieve the packer or drill additional laterals or re-entries using an adjustable, self-orienting whipstock.