CS-SAPPHIRE (SPR)  SERIES SUBSURFACE SAFETY VALVE

INTRODUCTION

Various kinds of new technology are applied in CS-SAPPHIRE series surface controlled subsurface safety  valves and perform very well in field applications, reducing significantly common safety valve failures.  CS-SAPPHIRE series surface controlled subsurface safety valve is with flapper structure to protect wireline  from damages, non-elastomeric sealing technology and metal-to-metal sealing and containment of wellbore  fluids when the valve is in the closed position. 25% safety valve failures are due to wireline damages in workover operation. CS-SAPPHIRE series surface  controlled subsurface safety valves involve the flapper design for protection of wireline from damages and  this design is so successful that it can virtually eliminate such failure mode. This design ensures all seal surfaces  are protected from wireline contact even during accidental closure of the valve during wireline operations.  CS-SAPPHIRE series surface controlled subsurface safety valves can be customized according to specific  needs, with available options such as integral chemical injection capability, wireline damage resistant seal  bores, and various control system stop seal versions.

FEATURES

◎ Self-equalizing function of flapper; 

◎ Non-elastomeric dynamic seal assembly; 

◎ Wireline damage resistant flapper - design protects sealing integrity during wireline operations; 

◎ Metal-to-metal seal technology -100% metal-to-metal sealing and containment of wellbore fluids when the  valve is in the closed position; 

◎ Optional chemical injection capability-injection mandrel within the TRSV eliminates the need for a mandrel  above the valve and allows injection of fluids directly into spring cavity for maximum effectiveness.

Note: Other specification products are available.