Technical Highlights
Core Functions
Feature Specification
Instant Closure Flapper seals in <1 second during backflow
Pressure Rating 5,000psi (Standard) / 10,000psi (HPHT)
Material 4140 steel body + tungsten-carbide flapper
Connection API REG/NC standard threads
Temperature Range -29°C to 121°C (HPHT: 177°C)
Operational Benefits
Prevents bit nozzle clogging during connections
Blocks well kicks by auto-sealing drill string
Reduces fluid loss by 95% vs. open drill pipe
Compatible with MWD/LWD systems
Comparative Advantage
Parameter Flapper Float Valve Ball-Type Float Valve
Sealing Speed 0.8-1.2 seconds 2-3 seconds
Debris Tolerance Medium (clears <5mm solids) Low (jams with >3mm solids)
Maintenance Replace flapper every 500 hours Replace ball seat every 300hrs
API Certification API 7-1, API 16A API 7-1 only
Case Study: Offshore Brazil deployment reduced connection-related bit clogging by 82% and saved $210k/well in nozzle replacement costs.
