Single Well Control Panels

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Single Well Control Panel Overview

The standard single well control panel is designed to operate one hydraulic controlled subsurface safety valve (SCSSV) and up to two pneumatic or hydraulic controlled surface safety valves (SSV) for any well. The single well panel will automatically close the safety valves in response to various alarm conditions requiring shut-in.

The control panel monitors the status of the flowline high-low pressure sensors and provides shut-in of the well in the event of a high or low pressure condition.

Panel mounted instruments provide local control and monitoring of all functions required to open and close the well during normal or emergency conditions.

Single Well Control Panel Technical Specifications

Type

Pneumatic/Hydraulic Control System

Pneumatic Supply

Type

Air or natural gas

Pressure

100- to 200-PSIG

Service

Standard or H2S-CO2 (NACE)

Consumption

15 SCFM (maximum) when pumping 5 SCFD (normal)

Hydraulic Outputs

Subsurface safety valve and surface safety valves, 1,000- to 10,000-PSIG

Pneumatic Outputs

ESD loop: 50-PSIG

 

Pilot supply: 50-PSIG

 

Surface safety valves: 100- to 200-PSIG

Shutdown Functions

Remote ESD

 

Fusible plugs

 

Low pressure / high pressure

 

Manual at panel

Pneumatic/Hydraulic Components

300 series stainless steel where possible. All components suitable for marine environment.

 

Hydraulic pump: combination manual / pneumatic drive

 

A hydraulic regulator is provided for panels with hydraulic SCSVS

Environment

Temperature

0° to 130°F

Atmosphere

Desert/marine

Reservoir Capacity

5 US gallons

Tubing

316 stainless steel

Fittings

316 stainless steel

Enclosure

Material

12 gauge, 316 stainless steel

Height

36 inches

Width

12 inches

Depth

24 inches

Weight

300 pounds

Well Opening Sequence for Well Control Panels

The well control panel contains a pneumatic interlock circuit to ensure the following well opening sequence.

  • Hydraulic pressure applied to the subsurface safety valve (SCSSV).
  • Pneumatic or hydraulic pressure applied to the master surface safety valve (MV).
  • Pneumatic or hydraulic pressure applied to the wing surface safety valve (WV).

Well Closing Sequence for Well Control Panels

The well control panel contains an adjustable time delay to ensure the following well closing sequence.

  • Pneumatic or hydraulic pressure vented from the wing surface safety valve (WV).
  • Pneumatic or hydraulic pressure vented from the master surface safety valve (MV).
  • Hydraulic pressure vented from the subsurface safety valve (SCSSV).

Well Closing Sequence for Well Control Panels

Shutdown Chart for Well Control Panels

Response

Action

Remote ESD

Fusible Plugs

High Pilot

Low Pilot

Manual WV at Panel

Manual MV at Panel

Manual SCSSV at Panel

Close WV

Close MV

    

Close SCSSV

      

Shutdowns can be changed to meet customer requirements

Notes:

  1. Customers should specify the number and type of surface safety valves (wing, master, or both and pneumatic or hydraulic)
  2. If NACE service is required, customer should specify.
  3. Typical delivery is only four to six weeks upon receipt of purchase order.
  4. All safety system accessories (i.e., pressure pilots, ESD stations, fusible plugs, gas scrubbers and installation kits) are available.

Click on the links below to lean more about our additional hardware components.

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