Disengageable downhole tool

Details Disengageable downhole tool Disengageable downhole tool

2007-07-03

2007-07-03

Bagnell, David (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S181000

Reexamination Certificate

active

10501634

ABSTRACT:
A disengageable downhole tool (10) for use in the oil and gas industry. The tool can be decoupled from a work string to allow further tools to be operated from the work string on being run deeper into a well. The tool is then picked-up by the work string on retrieval from the well. In one embodiment a milling tool (28, 32) is described having a hex-drive system for operation of the tool from the work string with coupling and decoupling being achieved via shear pins (40) and a mating ledge and shoulder.

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(Gianfiacomo) Bull Dog Auger. RMOTC Test Report [online], Sep. 1997. Retrieved from the internet:<URL: http://www.rmotc.com/pdfs/96pt15.pdf.
(Hard Rock Re-entry System) HRRS Test Results, 1996-2000, Retrieved from internet:<URL: http://www.odp.tamu.edu/publications/191—IR/chap—05/c5—7.htm.

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