초록 ▼

A releasable packer has a control line therethrough. A hydraulic release mechanism of the packer is controlled from the surface by application of flow and pressure. A modification of the packer and release mechanism using resettable collets and return springs allows multiple sets and releases of the

A releasable packer has a control line therethrough. A hydraulic release mechanism of the packer is controlled from the surface by application of flow and pressure. A modification of the packer and release mechanism using resettable collets and return springs allows multiple sets and releases of the packer.

대표청구항 ▼

1. A packer for use in a subterranean wellbore, comprising:a mandrel body having a first mandrel portion coupled to a second mandrel portion by a releasing sleeve; a plurality of slips spaced circumferentially about the first mandrel portion, wherein the plurality of slips move between an outwardly

1. A packer for use in a subterranean wellbore, comprising:a mandrel body having a first mandrel portion coupled to a second mandrel portion by a releasing sleeve; a plurality of slips spaced circumferentially about the first mandrel portion, wherein the plurality of slips move between an outwardly extended set position and an inwardly retracted running position based on movement of the releasing sleeve; and a release mechanism connected to at least one of the first and the second mandrel portions and positioned to selectively move the releasing sleeve upon an independent input, wherein the independent input comprises a hydraulic input delivered by a controllable source of fluid independent of pressure changes in the passageway, wherein the release mechanism comprises a flow responsive valve in fluid communication with the controllable source, the flow responsive valve moving to a closed position upon application of sufficient pressure applied via the controllable source.