发明申请
US20120080183A1 REMOTELY CONTROLLED APPARATUS FOR DOWNHOLE APPLICATIONS, COMPONENTS FOR SUCH APPARATUS, REMOTE STATUS INDICATION DEVICES FOR SUCH APPARATUS, AND RELATED METHODS 有权
用于井下应用的远程控制装置,这种装置的组件,用于这种装置的远程状态指示装置及相关方法

REMOTELY CONTROLLED APPARATUS FOR DOWNHOLE APPLICATIONS, COMPONENTS FOR SUCH APPARATUS, REMOTE STATUS INDICATION DEVICES FOR SUCH APPARATUS, AND RELATED METHODS
摘要:
An expandable apparatus may comprise a tubular body, a valve piston and a push sleeve. The tubular body may comprise a fluid passageway extending therethrough, and the valve piston may be disposed within the tubular body, the valve piston configured to move axially downward within the tubular body responsive to a pressure of drilling fluid passing through a drilling fluid flow path and configured to selectively control a flow of fluid into an annular chamber. The push sleeve may be disposed within the tubular body and coupled to at least one expandable feature, the push sleeve configured to move axially responsive to the flow of fluid into the annular chamber extending the at least one expandable feature. Additionally, the expandable apparatus may be configured to generate a signal indicating the extension of the at least one expandable feature.
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