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Inside Bop

The Inside Bop is a heacy duty drop check valve with a conical plug to reduce the cutting action of the mud on the valve seat, ensuring positive closure whenever required. Installed in the drill string, it can protect the rotary swivel, rotary hose, stand pipe, and mud pumps from drill pipekicks. It may be used along with high-pressure pumps to maintain well control by preventing high-pressure backflow.
  A special release tool allows the valve to be held open to permit stabbing into position against a backflow of fluid. This optional release tool can be installed on the float valve and the entire assembly kept ready on the rig floor for quick installation at the first signs of serious backflow when drill pipe is pulled from the well.

                      Specification

Type

O.D.
mm(inch)

I.D.
mm(inch)

Conn.
API

Overall Length
mm(inch)

FP95

95(3-3/4)

35(1-3/8)

NC26

660(26)

FP111

111(4-3/8)

35(1-3/8)

NC31

670(26-3/8)

FP121

121(4-3/4)

45(1-49/64)

NC38

685(26-31/32)

FP159

159(6-1/4)

57.2(2-1/4)

NC50

760(29-59/64)

FP165

165(6-1/2)

57.2(2-1/4)

NC50

760(29-59/64)

FP178

178(7)

57.2(2-1/4)

HT55

998(38-57/64)

FP203

203(8)

71.4(2-13/16)

6-5/8REG

998(38-57/64)

FP241

241(9-1/2)

71.4(2-13/16)

7-5/8REG

998(38-57/64)

 



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