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【Wellhead & X’mas tree】
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Wellhead
& X’mas tree assembly, the key equipment in oil/gas
production, consists of casing head, tubing head and X’mas
tree, which are applicable for connection of casing string
and tubing string, sealing the annular space between casing
and tubing and controlling the pressure of the production
wellhead and adjusting the flow rate of oil/gas wellhead
as well as some special operations such as acid fracture,
injection and test etc. |
| Technology specification： |
| The design meets the
requirement of API SPEC 6A. |
| Rated working pressure：2000~20000PSI |
| Rated working temp：K、L、P、R、S、T、U、V |
| Material class：AA,
BB, CC, DD, EE、FF |
| Product specification
level：PSL1~PSL4 |
| Performance requirement
level：PR1-PR2 |
| Suitable medium：Petroleum,
natural gas, mud etc. |
【Wellhead & X’mas tree】-->【Casing
head】
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Casing
hanger for casing head and casing spool has straight type
seat bore and 45°cone of hanging shoulder, with fine loading
ability. |
| ·if required, it can be
designed in integral or split structure. |
| ·The connecting type of
casing head and surface casing is weld, thread and slip
type. |
| ·The connecting type of
side outlet includes thread, bolted flange and flange |
| ·Matched casing hanger structural
type: slip, thread(mandrel); |
| ·In the bottom of casing
head and casing spool sets casing secondary seal mechanism
and sealing test port. |
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【Wellhead & X’mas tree】-->【Tubing
head】
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Tubing
hanger for tubing head has straight type seat bore and 45°core
of hanging shoulder, with strong loading ability.
·The
connecting type of side outlet is bolted flange with VR
thread for valve-replacement operation.
·In
the bottom flange sets secondary seal mechanism and sealing
test port.
·Tubing hanger and tubing
head adaptor can be penetrated through by cable or cable
penetrator and set with control pipeline interface.
·Tubing hanger can be set with BPV thread
as required. |
【Wellhead & X’mas tree】-->【X’mas
tree】
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X’mas tree is a key
equipment to control the pressure in wellhead and adjust
the flowrate of oil/gas well in oil/gas production operation.
·It can be designed into general
or integral structure as required;
·It
can be completed with pneumatic/hydraulic safety valve;
·It can be classified into two kinds of
single-wing and dual-wing.
·As required, matched choke may be positive
choke or adjustable choke alternatively |
【Wellhead & X’mas tree】-->【Injection
wellhead】
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Technology
specification： |
| ·Rated working pressure：2000-5000PSI |
| ·Nominal bore：2 9/16" |
| ·Rated working temp：L.U(-46℃～+121℃) |
| ·Material class：AA～EE |
| ·Connecting type： flange、collar |
| ·Use valve type：Plate gate
valve 、Wedge gate valve |
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【Wellhead & X’mas tree】-->【Thermal
wellhead 】
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The wellhead
assembly is a necessary special assembly for thickened oil
recovery, and applicable for alkyl and cycloalkanes compound-base
crude-oil production by steam hum/haw, steam drive or hot-water
circulation, as well as general oil production. |
| ·Executive standard: SY/T5328-1996
thermal wellhead assembly |
| ·Rated working pressure：21MPA、35MPA |
| ·Rated working temp：<=370℃ |
| ·Connecting thread of casing
flange thread: 4 1/2 UP TBG |
| ·valve type：Single Plate
gate valve |
| ·Performance requirement
level：PR1、PR2 |
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【Wellhead & X’mas tree】-->【Casing
hanger】
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Casing hanger
is classified into two kinds, i.e. the threaded (mandrel)
and the slipped; slip casing hanger consists of G, W, WD,
WE and other types, WD hanger is applicable for connection
of casing head and surface casing and keeps the slip closing
the casing fast in use of outer force, W hanger adopts self-weight
energized sealing structure and WE & G hanger is manual-energized
sealing structure. |
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