WCS Glossary
- Centrifugal Pump
- Centrifuge
- Centripetal Force
- Certified
- Chain Tongs
- Check Valve
- Chemical Cutoff
- Choke
- Choke Exercise
- Choke Line Friction
- Choke Manifold
- Choke Pressure
- Choked Flow
- Christmas Tree
- Circulate-And-Weight
- Circulating Head
- Circulation
- Clabbered
- Clean Out
- Clearance
- Close In
- Closed Returns System
- Closing Unit
- Coating
- Coefficient of Thermal Expansion
- Coiled Tubing
- Coiled Tubing BOP
- Collar
- Collar Locator
- Colloid
- Column Separation
- Comms Out
- Completion
- Completion Fluids
- Compressibility
- Compressible Fluid
- Compression Ratio
- Condensate
- Conductor Pipe
- Connate Water
- Connection Gas
- Consistency
- Constant
- Constant Bottom Hole Pressure (CBHP)
- Constant Choke Pressure Method
- Continuity Equation
- Continuous Annular Injection
- Continuous Circulation Drilling (CCD)
- Continuous Circulation Systems (CCS)
- Continuous Phase