Dyna Trol
Typical Applications
Figure 1
Application
High/low flowline pressure protection for wellheads with one (1) pneumatically-actuated surface safety valve.
Configuration
Dyna-Trol Model BX-000 high/low pilot with optional remote trip connection.
Operation
Automatic shut-in of the well occurs when the pilot detects a high or low flowline pressure condition, when a remote shutdown is initiated, or when a fire is detected.
Figure 2
Application
High/low flowline pressure protection for wellheads with one (1) hydraulically-actuated surface safety valve.
Configuration
Dyna-Trol Model DX-000-M high/low pilot with gauges and optional manual reset valve.
Operation
Automatic shut-in of the well occurs when the pilot detects a high or low flowline pressure condition. The optional integral manual reset valve requires manual operation to restart the well when flowline pressure returns to normal.
Figure 3
Application
High/low flowline pressure protection for wellheads operating with a replaceable pneymatic control supply source.
Configuration
Dyna-Trol Model BX-000-N high/low pilot with zero gas consumption option.
Operation
The pilot is designed for very low supply consumption during extended operating periods when using a limited-volume supply source, such as nitrogen bottles. Automatic shut-in of the well occurs when the pilot detects a high or low flowline pressure condition.