COUPLING, DOWNHOLE DEVICE, ASSEMBLY AND METHOD

摘要

A downhole device having a body comprising a male end portion, a female end portion and a mandrel portion disposed between the male end portion and the female end portion. A recess is disposed in the outer surface of the male end portion and is configured to receive a retainer for securing the downhole device to another downhole device.

主权项

1. A downhole device for coupling to at least one other downhole device to form a string to be run downhole, the downhole device comprising:
a body comprising at least one of: a male portion configured to couple the device to a female portion of another downhole device, wherein the male portion is configured to receive a retainer for engaging the other downhole device, and wherein the male portion is configured to permit the retainer to move to a smaller configuration when the retainer is engaged by said other downhole device to permit relative axial movement between the downhole device and said other downhole device; and a female portion configured to couple the device to a male portion of another downhole device, wherein the female portion is configured to permit a retainer to move to a larger configuration, in which larger configuration relative axial separation of the device and said other downhole device is resisted or prevented.