发明申请
US20120234545A1 VALVING SYSTEM, METHOD OF ADJUSTING A VALVE AND METHOD OF FRACING A WELLBORE 有权
阀门调节系统,调节阀的方法及其分解方法

VALVING SYSTEM, METHOD OF ADJUSTING A VALVE AND METHOD OF FRACING A WELLBORE
摘要:
A valving system includes a tubular and a sleeve slidably engaged with the tubular having a seat thereon. The sleeve is configured to occlude flow from an inside of the tubular to an outside of the tubular when in a first position, allow flow between an inside of the tubular and an outside of the tubular at a first location upstream of the seat and a second location downstream of the seat when in a second position, and allow flow between an inside of the tubular and an outside at the tubular at the first location and not the second location when in a third position. The valving system also includes 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 thereof.
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