Essential details
Quantity(pieces):9
Lead time:45 days
Shipping:Land transport, Sea transport
Product Introduction
1. Basic Functions and Importance
Core Functions:
Shear Gate: Emergency cut-off of drilling tools (such as drill pipe and casing), instantly sealing the wellhead.
Full Seal Gate: Completely seals the wellbore when no drilling tools are present.
Partial Seal Gate: Grips the outer wall of the drilling tools to achieve a seal.
Shear Gate: Emergency cut-off of drilling tools (such as drill pipe and casing), instantly sealing the wellhead.
Full Seal Gate: Completely seals the wellbore when no drilling tools are present.
Partial Seal Gate: Grips the outer wall of the drilling tools to achieve a seal.
Application Scenarios:** Used onshore/offshore drilling platforms, activated in extreme situations such as well pressure runaway (e.g., "well kick"), fire, or typhoon to protect personnel and equipment safety.
2. Core Structural Components
Main Shell: Cast from high-strength alloy steel (e.g., 4140H), pressure resistant ≥15,000 psi (103 MPa)
Three Independent Gates: Horizontally opposed design: Upper shear gate + Middle semi-sealed gate + Lower fully sealed gate
Hydraulic Drive System: Gates are driven by hydraulic cylinders, response time <30 seconds (API 16A standard requirement)
Sealing Elements: High-temperature resistant rubber (e.g., HNBR) + metal sealing rings, suitable for environments from -29℃ to 177℃ and H₂S corrosive media
3. Key Performance Parameters
Shearing Capacity: Capable of cutting S-135 grade drill pipe (diameter ≤5.5 inches) or cables; Shearing force typically ≥1,500 tons (e.g., SHCM 18000 model). Pressure rating: Operating pressure: 5,000 psi / 10,000 psi / 15,000 psi (according to API 16A classification); Sealing pressure: 110% of rated operating pressure.
