WELL CONTROL EQUIPMENT (NEXT NETWORK OF EXCELLENCE IN TRAINING)

WELL CONTROL EQUIPMENT (NEXT NETWORK OF EXCELLENCE IN TRAINING)

Rams

Variable Bore Rams

1.The Variable Bore Ram, or VBR, seals on several sizes of pipe or hexagonal kelly within its specified size range. A typical range is from 5" to 3-1/2" diameter Other size ranges, such as 7" to 4-1/2" diameter, are available upon request.

2.VBRs are not intended for long-term stripping use.

3."Stripping" refers to moving drill pipe vertically within the well while the BOPs remain closed, maintaining a seal around the pipe.

4.During stripping, the drill pipe and larger diameter tool joints are pulled through the packers in fully closed rams. This procedure is typically used in workover and servicing operations using annular BOPs and specialty rams.

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