Anti-kick, anti-fall running tool and instrument hanger and tubing packoff tool
OwnerWilliam T. Taylorinventor
Life of this patent
Estimating the term…
Loading patent…
OwnerWilliam T. Taylorinventor
Estimating the term…
An instrument hanger for use in tubing is disclosed with an anti-kick, anti-fall running tool. In one embodiment, the tool includes an internal mandrel, an external sleeve, with the mandrel being tapered wherein the external sleeve supports upwardly pointed detents and downwardly pointed detents against the taper which detents prevent untimely fall of the tool and untimley upward movement thereof. The tool combination includes a packer element including a set of expandable slips or collet fingers functioning in conjunction with the packer to expand and plug the tubing string. Further tool combination may support an instrument package such as a downhole pressure measuring mechanism used to obtain downhole pressure readings after isolating above a particular zone. The tool combination further includes a valved flow path across the packer element which is selectively released at the time of release of the tool combination which vents any bottom hole pressure differential and enables retrieval of the tool combination. During retrieval, the instrument package cannot be dropped because the anti-fall detents are set against prefall.
An apparatus for use in a tubing string to isolate a portion thereof and which apparatus supports an instrument package therebelow which comprises:
An anti-kick, anti-fall running tool for use in a tubing string comprising:
An apparatus for enabling isolation of a production zone of a well bore having a tubing string therein and for enabling desired tests to be run in the zone comprising:
Dependencies are inferred from the claim text.