Downhole position locating device with fluid metering feature

Details Downhole position locating device with fluid metering feature Downhole position locating device with fluid metering feature

2007-10-23

2007-10-23

Neuder, William (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C166S242700, C166S238000, C166S381000

Reexamination Certificate

active

11104067

ABSTRACT:
A tool for multiple purposes features one ore more dogs that can engage a collar groove or restriction sub in the wellbore. The dogs are extendable through a sleeve biased in opposed directions and are supported from a mandrel. The dogs can retract into mandrel grooves to clear restrictions on the trip into the well. On the way up to a collar that has just been passed, the dogs engage and an upward pull on the mandrel displaces fluid through a restriction to allow enough time to get a meaningful surface signal of the overpull force. Thereafter, the applied force can be reduced as the dogs release at a lower applied force to reduce the slingshot effect. The tool can be inverted and used to keep a constant force on a bottom hole assembly during offshore drilling where a heave compensator is employed.

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patent: 3696865 (1972-10-01), Chapman
patent: 3902361 (1975-09-01), Watson
patent: 4067386 (1978-01-01), Weise
patent: 4614233 (1986-09-01), Menard
patent: 5092402 (1992-03-01), Perricone et al.
patent: 5269374 (1993-12-01), Taylor

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