Multi-Function Safety Kelly Cock Valve: 3-in-1 Well Control Solution
The Conventional Valve Limitation
Standard kelly cocks require compromise between safety and functionality:
⚠️ Check valve must be installed above kelly cock for complete protection
⚠️ No circulation capability once valve is closed
⚠️ Limited functionality in high-pressure differential environments
⚠️ Additional connections create potential leak paths
Our patented multi-function safety valve (201910398953.0) delivers:
✅ Integrated check/shutoff/circulation in single compact design
✅ No additional check valve required - reduces connection points
✅ Full circulation capability even when valve is activated
✅ Simplified BHA design with enhanced safety
Three-Function Technology
Patented Floating Ball Mechanism
| Function | Mechanical Action | Operational Benefit |
|---|---|---|
| Pressure Relief | Ball floats open with pressure equalization | Easy stabbing during connections |
| Kick Prevention | 90° rotation seals flow path | Positive well control barrier |
| Circulation | Partial rotation enables controlled flow | Kill operations without removal |
Technical Specifications
| Parameter | Specification |
|---|---|
| Patent Number | 201910398953.0 |
| Pressure Rating | 5,000psi / 10,000psi / 15,000psi |
| Temperature Range | -50°C to +190°C |
| Material Grades | API 4140/4145H + H2S resistant alloys |
| Ball Mechanism | Patented floating ball design |
| Seal Technology | Dual metal-to-metal and elastomer |
| Connections | API REG, IF, FH (all standard sizes) |
Operational Advantages
A. Multi-Function Capability
Pressure Relief & Circulation:
Floating ball design enables pressure equalization during connections
Controlled circulation for kill weight mud pumping
No tool removal required for circulation operations
B. Material Excellence
Strength & Corrosion Resistance:
API standard high-strength steel for pressure containment
H2S resistant alloys prevent sulfide stress cracking
Precision machining ensures reliable long-term performance
C. Sealing Reliability
High-Pressure Performance:
Advanced seal technology maintains integrity under high differential pressure
Dual-seal system provides redundant sealing capability
Tested performance to 1.5x working pressure
D. Temperature Adaptation
Extreme Environment Operation:
Special seal materials withstand -50°C to 190°C range
Consistent performance in arctic and high-temperature applications
Material stability maintained throughout temperature range
Field Application Benefits
Safety Enhancement
Eliminates need for separate check valve - reduces potential leak points
Automatic backflow prevention during connections
Positive well control with manual override capability
Operational Efficiency
Faster connections with integrated pressure equalization
Simplified inventory - one tool replaces multiple components
Reduced handling with fewer tools to install and maintain
Cost Effectiveness
Eliminates separate check valve cost ($8,000-$12,000 per valve)
Reduces connection time by 30-40%
Minimizes training requirements with intuitive operation
