wellhead installation

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Leveling &Cold Cutting
• The flange must be installed so that the top is level.
• Cold Cutting equipment is used
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Welding
• The wellhead flange attaches to the first cemented surface casing string designed to
hold pressure.
• Well flange attachment to the casing may be by welding, forming, threaded
connection or set screws.
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Welding2
C a s i n g H e a d S p o o l

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Weld test
• Test welds to 3,000 psi or 80% of casing collapse.
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TEST PORT

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Casing running and hanger set
• The second string of casing is run and the hanger is landed in
the bowl.
• Lock down screws engaged
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N/U and test BOP
• Make sure the BOP, test plug, and the casing head are
compatible
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N/U and test BOP
• Lower the wear bushing through the blowout preventers and
riser until it lands on the load shoulder of the casing head
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Continue drilling operation8
RIH and set new casing10
SET hanger and lDS11
N/D BOP12
Retrieve wear bushing9

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The casing spool follows13

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N/U BOP and test plug14

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test BOP15

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Install Tubing spool15

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Run Tubing and set hanger16

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Installation of tree assembly17

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DIMENSIONS ARE SUBJECT TO CHANGE ACCORDING TO ACTUAL
FIELD CONDITIONS