Patent ID: 8579036
Filing Date: 2013-11-12
Classification: E21B

Abstract:
1. A valving system comprising: a tubular; a sleeve slidably engaged with the tubular having a seat thereon, the sleeve configured to occlude flow from an inside of the tubular to an outside of the tubular while in a first position, allow flow between the inside of the tubular and the outside of the tubular at a first location upstream of the seat and allow flow between the inside of the tubular and the outside of the tubular at a second location downstream of the seat while in a second position, and allow flow between the inside of the tubular and the outside of the tubular at the first location and not the second location while in a third position; and a disappearing member in operable communication with the tubular and the sleeve configured to prevent movement of the sleeve to the third position until disappearance the disappearing member.