Lost-motion valve actuator

Details Lost-motion valve actuator Lost-motion valve actuator

1985-07-03

1987-04-07

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Fluid operated

166332, 166374, E21B 3410

Patent

active

046552880

ABSTRACT:
A lost-motion valve actuator which provides the ability to run a tool bore closure valve in a testing string into a well in an open mode, apply pressure to the well annulus surrounding the string without cycling the valve, thereafter reduce pressure, closing the valve subsequent to the initial pressure increase, and subsequently opening the valve with pressure increases and closing it with pressure decreases, thus permitting the tool bore closure valve to subsequently respond in a normal manner (open on pressure increase, close on pressure decrease) to pressure changes in the annulus subsequent to the first pressure increase/decrease cycle.

REFERENCES:
patent: Re29562 (1978-03-01), Wray et al.
patent: Re29638 (1978-05-01), Nutter
patent: 3796261 (1974-03-01), Nutter
patent: 3823773 (1974-07-01), Nutter
patent: 3850250 (1974-11-01), Holden et al.
patent: 3856085 (1974-12-01), Holden et al.
patent: 3858649 (1975-01-01), Wray et al.
patent: 3891033 (1975-06-01), Scott
patent: 3901314 (1975-08-01), Nutter
patent: 3964544 (1976-06-01), Farley et al.
patent: 3970147 (1976-07-01), Jessup et al.
patent: 3976136 (1976-08-01), Farley et al.
patent: 3986554 (1976-10-01), Nutter
patent: 4063593 (1977-12-01), Jessup
patent: 4064937 (1977-12-01), Barrington
patent: 4105075 (1978-08-01), Helmus
patent: 4109724 (1978-08-01), Barrington
patent: 4109725 (1978-08-01), Williamson et al.
patent: 4113012 (1978-09-01), Evans et al.
patent: 4125165 (1978-11-01), Helmus
patent: 4144937 (1979-03-01), Jackson et al.
patent: 4270610 (1981-06-01), Barrington
patent: 4295361 (1981-10-01), McMahan
patent: 4311197 (1982-01-01), Hushbeck
patent: 4319633 (1982-03-01), McMahan et al.
patent: 4319634 (1982-03-01), McMahan et al.
patent: 4324293 (1982-04-01), Hushbeck
patent: 4341266 (1982-07-01), Craig
patent: 4355685 (1982-10-01), Beck
patent: 4399870 (1983-08-01), Baugh et al.
patent: 4403659 (1983-09-01), Upchurch
patent: 4421172 (1983-12-01), McMahan
patent: 4422506 (1983-12-01), Beck
patent: 4429748 (1984-02-01), Beck
patent: 4444267 (1984-04-01), Beck
patent: 4444268 (1984-04-01), Barrington
patent: 4445571 (1984-05-01), Hushbeck
patent: 4448254 (1984-05-01), Barrington
patent: 4452313 (1984-06-01), McMahan
patent: 4458762 (1984-07-01), McMahan
patent: 4467867 (1984-08-01), Baker
patent: 4467870 (1984-08-01), Langham
patent: 4489786 (1984-12-01), Beck
patent: 4502537 (1985-03-01), Carter, Jr.
patent: 4513764 (1985-04-01), Yonker
patent: 4515219 (1985-05-01), Beck
patent: 4522266 (1985-06-01), Barrington

Affiliated with

Also associated with

Rating

Lost-motion valve actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lost-motion valve actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lost-motion valve actuator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1080685