- Title : Expro Slickline Training Manual [ pdf ] by The Expro Group European Training Centre Forties Road, Montrose
DD10 9 ET Scotland UK - Publish : RGit Montrose
- Type Document : pdf
- Release : December 1994
- Total Page : 352 Page
- Size : 27.07 Mb
Download Free by Netload : [ http://adf.ly/XW7h9 ]
Decrypted Contents
WELL CONTROL AND BOP PUMPS
SINGLE WELL CONTROL PANEL
When conducting well servicing operations in a well, it is a necessary safety precaution to lock out any pneumatically or hydraulically activated valves and isolate them from the platform control system.
This has meant the introduction of a mobile well control panel which effectively duplicates the platform failsafe control system functionally for an individual well, but it is operated manually. The well control panel is also provided with an emergency shutdown system, enabling the UMV and DHSV to be closed instantly in an emergency situation.
An overview of the panel is given in Figure 10.1. It consists essentially of a control panel section comprising of two reservoirs which feed three pneumatically operated Haskel pumps. These provide a high pressure hydraulic supply for three functions:
When conducting well servicing operations in a well, it is a necessary safety precaution to lock out any pneumatically or hydraulically activated valves and isolate them from the platform control system.
This has meant the introduction of a mobile well control panel which effectively duplicates the platform failsafe control system functionally for an individual well, but it is operated manually. The well control panel is also provided with an emergency shutdown system, enabling the UMV and DHSV to be closed instantly in an emergency situation.
An overview of the panel is given in Figure 10.1. It consists essentially of a control panel section comprising of two reservoirs which feed three pneumatically operated Haskel pumps. These provide a high pressure hydraulic supply for three functions:
- UMV control - direct hydraulic (fluid depending on location)
- DHSV control - direct hydraulic (fluid depending on location)
- Wireline BOP stuffing box control- direct hydraulic (hydraulic oil).
A separate hand pump system is incorporate to enable the operation of a hydraulic stuffing box system test line. An additional facility is provided to allow the hook-up of an independent inhibitor supply using the spare hose and reel.
The hydraulic supply hoses are wound onto four reels mounted beneath the control panel section. The low air supply/hydraulic pressure warning system is incorporated into the panel.
The warning system monitors DHSV pressure, UMV pressure and the air supply
pressure. If any of the aforementioned pressures fall below a pre-set level, an air hom sounds to warn the operator, air supply should be taken from plant air not rig air as this can be lost at times, such as water injection shut-down.
The hydraulic supply hoses are wound onto four reels mounted beneath the control panel section. The low air supply/hydraulic pressure warning system is incorporated into the panel.
The warning system monitors DHSV pressure, UMV pressure and the air supply
pressure. If any of the aforementioned pressures fall below a pre-set level, an air hom sounds to warn the operator, air supply should be taken from plant air not rig air as this can be lost at times, such as water injection shut-down.
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