- Title : FMC Wellhead Manual
- Publish : FMC WellHead
- Type Document : pdf
- Release : December 1994
- Total Page : 5 Chapter
- Size : 0.81 Mb
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Decrypted Contents
Casing Heads
General Installation Guidelines
Leveling
The casing head must be installed so that the top flange is level, except in cases where the surface casing is not exactly vertical. In this case, the top flange face must be perpendicular to the casing string. Otherwise, there will be problems passing the drill bit through the head and running and landing subsequent casing strings.
General Installation Guidelines
Leveling
The casing head must be installed so that the top flange is level, except in cases where the surface casing is not exactly vertical. In this case, the top flange face must be perpendicular to the casing string. Otherwise, there will be problems passing the drill bit through the head and running and landing subsequent casing strings.
Orientation
The casing head should establish the proper orientation for the remaining casing spools and completion equipment. Be sure the side outlets are orientated so that there is ample room to install the valve-removal (VR) lubricator.
The casing head should establish the proper orientation for the remaining casing spools and completion equipment. Be sure the side outlets are orientated so that there is ample room to install the valve-removal (VR) lubricator.
Welding
Welding should only be performed by a qualified welder hired by the customer. You should make sure the weld area is thoroughly cleaned before welding. After welding and cool-down, conduct the hydrostatic test using clear water or other suitable fluid as specified by FMC engineering department. Test the weld to 80% of the casing collapse rating.
Welding should only be performed by a qualified welder hired by the customer. You should make sure the weld area is thoroughly cleaned before welding. After welding and cool-down, conduct the hydrostatic test using clear water or other suitable fluid as specified by FMC engineering department. Test the weld to 80% of the casing collapse rating.
NOTE: Due to the variety of materials requested for use worldwide, exact weld procedures will not be supplied in this manual. A qualified welder of the customers choice should be utilized to weld on casing heads. FMC Engineering Department may be consulted for guidelines. Final procedures and responsibility for the weld rest with the customer's welder.
Before Installation
NOTE: Make sure all required personal protective equipment is obtained and used during this operation.NOTE: A checklist is provided at the end of this section to further assist in the installation of this product.
- Check orientation of mud valve outlet to see that it will match up to flowlines.
- See that there is enough clearance at the site and orient the head so that the VR lubricator may be attached for valve removal and reinstallation.
- Determine the casing cut-off height so as to properly locate the top flange of the head.
- Clean grease away from the area of the weld.
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