首页>
外国专利>
Mechanisms for transferring hydraulic regulation from a primary safety valve to a secondary safety valve
Mechanisms for transferring hydraulic regulation from a primary safety valve to a secondary safety valve
展开▼
机译:用于将初级安全阀转移到二级安全阀的机理
展开▼
页面导航
摘要
著录项
相似文献
摘要
Wellbore systems containing a hydraulically regulated primary safety valve may have their hydraulic regulation transferred to an insert safety valve disposed in a nipple. Transfer of the hydraulic regulation may take place mechanically, such as through axial displacement of a sliding sleeve or by replacement of a hydraulic spool. Wellbore systems configured for axial displacement of a switching mechanism may comprise: a tubing string comprising a nipple and a primary safety valve, the primary safety valve being disposed in the tubing string above or below the nipple; a control line and a balance line in hydraulic communication with the primary safety valve and in latent hydraulic communication with an internal flow pathway within the nipple; and a switching mechanism that is axially displaceable to establish hydraulic communication between an insert safety valve positioned in a bore of the nipple and both the control line and the balance line.
展开▼