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WELLHEAD
Wellhead assembly including casing head,
tubing head and Christmas tree is mainly
used for producing wellhead to control
pressure and adjust flow rate of oil
(gas) well. It is also available for
controlling wellhead during acid
fracturing and well performance test.
Wellhead assembly with the features of
corrosion resistance, reliable seal and
safe operation, which can meet all
services.
It is available for all kinds of program |
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Main technical parameters |
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Working Pressure |
2000-15000 (psi) |
Nominal Size |
2 1/16-21(in) |
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Product Specification Levels |
PSL1-3 |
Material Class |
AA-FF |
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Performance Requirements
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PR1-2 |
Working Temperature |
P.U (-20 thro +250 Deg.F) |
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Other size available on request
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Casing
Head Housing Spool
The casing spool has a top bowl to
accommodate the casing hanger. The
spool also has a bottom bowl with a
packoff seal and a flange or clamp
hub for mounting it on top of a
casing head or previous spool.
Outlets are provided for annular
access. Multiple casing spools may
be stacked to hang intermediate and
production casing strings. |
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Top Flange |
Bottom Flange |
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Size (IN) |
Working pressure (PSI) |
Size (IN) |
Working pressure (PSI) |
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7 1/16 |
2000-5000 |
9 |
2000-5000 |
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7 1/16 |
2000-10000 |
13 5/8 |
2000-5000 |
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9 |
2000-10000 |
13 5/8 |
2000-10000 |
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11 |
2000-10000 |
16 34 |
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13 5/8 |
2000-5000 |
16 3/4 |
2000-3000 |
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13 5/8 |
5000-10000 |
18 3/4 |
5000-10000 |
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13 5/8 |
3000-5000 |
20 3/4 |
2000-5000 |
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13 5/8 |
2000-10000 |
21 3/4 |
2000-5000 |
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21 ¼ |
2000-5000 |
26 3/4 |
2000-5000 |
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Casing Head
Spool
The NMCO casing Heads have a
Straight Bore Design that accepts
any of the Heavy Duty inter-
changeable casing Hangers. Each of
these Hangers can support casing
weight beyond the joint strength of
the pipe itself, with minimum
deflection. Both can be lowered
through Blowout presenters.
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Top Flange |
W.P. |
Bore |
Max. CSG. Size |
Outlets |
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11” |
5000 PSI |
7 1/8” |
7 5/8” |
2” L.P.
60.3 |
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11” |
3000 PSI |
9 1/16” |
10 3/4" |
2” L.P.
60.3 |
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11” |
5000 PSI |
9 1/16” |
9 5/8” |
2” L.P.
60.3 |
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11” |
5000 PSI |
9 1/16” |
10 3/4" |
2” L.P.
60.3 |
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13 5/8” |
5000 PSI |
10” |
10 3/4" |
2” L.P.
60.3 |
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16-3/4” |
5000 PSI |
12 5/8” |
13 3/8” |
2” L.P.
60.3 |
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21 1/4" |
3000 PSI |
19 3/16” |
13 3/8” |
2” L.P.
60.3 |
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X-Mass Tree
Caps
WH tree caps are available in
nominal flange sizes from 2 1/16" to
4 1/16" and pressure ratings from
2,000 to 10,000 psi. A lifting
thread is provided in the tree cap
body for convenient removal of
christmas tree assemblies or for
connecting a threaded lubricator.
Lifting threads are API upset tubing
but available in premium threads
when required. The tree cap nut is
provided with hammer lugs for easy
operation.
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Double Stud Adapter
Double Studded Adopter Flanges often
known as DSA'S are a combination of
two different flanges of different
size, pressure rating. These flanges
are used when there is a restriction
of space in the drill string. They
provide an ideal solution by hooking
up two different equipment of
different size and pressure rating.
DSA'S are available as per
customer's requirement.
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