Snubbing Operation

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SnubbingOperation is one of well services job using hydraulic system. Launched by Otis Engineering since 1929 and go international since 1950. Used for :

• Pulling and running a single or dual completion
• Running and pulling submersible pump
• Fishing
• Sand Washing
• Millilng Bridges and packer
• Squeeze cementing
• Drill out cement
• Through tubing gravel pack
• Acidizing
• Rig Assist
• etc

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The technique of running on or out a pipe under pressure is more economical by without first killing the well than to kill it. This typical operation avoid damaging the production zone by penetration of mud / liquid into the formation.

SNUBBING UNIT MAIN FEATURES

(HR 150)

BOP STACK

Working Pressure : 5000 psi, Cameron Type

Drift  :  4 1/16"

Operating press. (hydraulic actuating press.) : 1500 psi

Rams block to accommodate : 1.315" ; 1.660" ; 1.900" ;   2 3/8" mac. pipe.

Functions  :  BOP

No. 1   :  Stripping BOP

No. 2   :  Stripping BOP

No. 3   :  Blind rams BOP

No. 4   :  Shear ram BOP

No. 5   :  Safety BOP

No. 6   :  Safety BOP

                ·        Well Head Adaptor Flange  :  4 1/16 x 3 1/16, gasket RX35

                                                                       4 1/16 x 4 1/16, 5000 psi, gasket BX155

                ·        Kill Line    :    -    two 2" x 5000 psi manual valves (1/4 turn).

                                               -    below BOP No. 3

                ·          Equalizing Line for BOP No. 2 :

                                         -    one hydraulic actuated valve 2" x 5000 psi.

                                         -    one manual valves (1/4 turn) 2" x 5000 psi.

                ·          Bleed Off Line   :     -     one hydraulic actuated valve 2" x 5000 psi.

                                                      -     one manual valve (1/4 turn) 2" x 5000 psi.

                                                      -     below BOP No. 1.

             ·          One Spacer Riser    :     4 1/16" x 5000 psi for 1.315 to    3 1/2  pipe length 0.5 m : between BOP No. 1 & No. 2.