POWER RETRIEVING TOOL

摘要

Apparatuses and methods for retrieving a tool or bottom hole assembly. The apparatus may include a latching device that couples to a tool or bottom hole assembly to be retrieved and at least one seal extending radially from the apparatus to engage an inner diameter of a tubular, such as a casing string. A pump inlet is disposed in or through an outer surface of the apparatus uphole of the at least one seal. A pump outlet is disposed in or through an outer surface of the apparatus downhole of the at least one seal. The apparatus may also include a pump for pumping a drilling fluid from the pump inlet to the pump outlet in order to generate a differential pressure across the at least one seal and provide a hydraulic force to effect retrieval of the tool or bottom hole assembly.

主权项

1. An apparatus for retrieving one of a tool and a bottom hole assembly, comprising:
a latching device arranged and designed to couple to a tool or bottom hole assembly to be retrieved; at least one seal extending radially from the apparatus and configured to engage an inner diameter of a tubular; a pump inlet disposed in an outer surface of the apparatus uphole of the at least one seal; a pump outlet disposed in an outer surface of the apparatus downhole of the at least one seal; and a pump for pumping a drilling fluid from the pump inlet to the pump outlet to generate a differential pressure across the at least one seal and provide a hydraulic force to effect retrieval of the tool or bottom hole assembly.