Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2006-09-12
2006-09-12
Thompson, Kenn (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S066000, C166S066600, C340S853800, C340S854700, C250S227160
Reexamination Certificate
active
07104331
ABSTRACT:
An apparatus and methods are disclosed for using optical sensors to determine the position of a movable flow control element in a well control tool. A housing has a movable element disposed within such that the element movement controls the flow through the tool. An optical sensing system senses the movement of the element. Optical sensors are employed that use Bragg grating reflections, time domain reflectometry, and line scanning techniques to determine the element position. A surface or downhole processor is used to interpret the sensor signals.
REFERENCES:
patent: 4189705 (1980-02-01), Pitts, Jr.
patent: 4547774 (1985-10-01), Gould
patent: 4701614 (1987-10-01), Jaeger et al.
patent: 4729630 (1988-03-01), Martinez
patent: 5042905 (1991-08-01), Anjan et al.
patent: 5118931 (1992-06-01), Udd et al.
patent: 5330136 (1994-07-01), Colbaugh
patent: 5331152 (1994-07-01), Fenton
patent: 5363095 (1994-11-01), Normann et al.
patent: 5774619 (1998-06-01), Bruesselbach
patent: 5818585 (1998-10-01), Davis et al.
patent: 5868201 (1999-02-01), Bussear et al.
patent: 5893413 (1999-04-01), Lembcke et al.
patent: 5925879 (1999-07-01), Hay
patent: 5973317 (1999-10-01), Hay
patent: 5975204 (1999-11-01), Tubel et al.
patent: 6004639 (1999-12-01), Quigley et al.
patent: 6009216 (1999-12-01), Pruett et al.
patent: 6233746 (2001-05-01), Skinner
patent: 6301551 (2001-10-01), Piscalko et al.
patent: 6333700 (2001-12-01), Thomeer et al.
patent: 6359569 (2002-03-01), Beck et al.
patent: 2001/0013412 (2001-08-01), Tubel
patent: 2001/0020675 (2001-09-01), Tubel et al.
patent: 2004/0135075 (2004-07-01), Hay et al.
patent: 2004/0163809 (2004-08-01), Mayeu et al.
patent: 2004/0194958 (2004-10-01), Mayeu et al.
patent: WO 01/67466 (2001-09-01), None
Bussear Terry R.
Carmody Michael A.
Hopmann Don A.
Jennings Steve L.
Norris Michael
Baker Hughes Incorporated
Madan Mossman & Sriram P.C.
Thompson Kenn
LandOfFree
Optical position sensing for well control tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical position sensing for well control tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical position sensing for well control tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3619944