| 摘要 |
A kit for converting an existing wireline retrievable surface controlled subsurface safety valve ( 170, 270, 370 ) into a bypass passageway apparatus ( 100 ) allowing the injection of production-enhancing fluid into a wellbore while maintaining the operation of the closure member ( 374 ). Bypass passageway ( 280 ) can extend between upper ( 260 ) and lower ( 275 ) adapters external to the existing wireline retrievable surface controlled subsurface safety valve ( 270 ) to allow fluid injection bypass thereof. Conversion kit can include a tubing string hanger to suspend a velocity tubing string ( 407, 507 ), a gas lift valve ( 475 ) for gas lift operations, a locking mandrel ( 220 ), and/or a spacer tube ( 240 ).
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