SAGD Wellhead-A4

hollandmarigoldOil and Offshore

Nov 8, 2013 (3 years and 7 months ago)

117 views

SAGD Wellhead
Building flexibility and efficiency.
Steam rises and
heats bitumen
Heated bitumen
flows to well
SAGD Wellhead
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© 2009 Weatherford. All rights reserved.
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Master valve
Coiled-tubing
extension fl ange
Coiled-tubing
hanger
Master Valve
Carrier
Tubing bonnet
Lock screw
Lock screw
Lock screw
Alignment pin
Lower tubing hanger
Upper tubing hanger
Unihead assembly
Studded cross
Long string
annulus gate valve
Long string
annulus gate valve
Short string
annulus gate valve
Short string
annulus gate valve
Surface casing
annulus gate valve
Surface casing
annulus gate valve
Tubing hanger mandrel
Companion fl ange
Achieve the flexibility and efficiency you need at the wellhead
for the toughest heavy-oil challenges.
SAGD wellhead takes the heat
As a world leader in heavy-oil technology,
Weatherford offers a wellhead engineered to
meet the tough challenges of steam-assisted
gravity drainage (SAGD) applications. These
steam-injection and thermal-producing wellhead
assemblies operate in temperatures from
−60°F to 650°F (−45°C to 343°C). What’s more,
the low-profile design increases operating
flexibility, efficiency and safety. The SAGD
wellhead is everything you would expect from
the people who deliver innovative products
and services for producing heavy oil and
oil sands reserves.
High recovery rates of up to 60 percent make the
economics of the SAGD process highly attractive.
And Weatherford’s SAGD wellhead adds further
value to the process with its unique low-profile,
unitized design that increases efficiency and
operational flexibility.
This new design enables concentric landing of
multiple strings into one body, reducing overall
wellhead height while enabling access to all
annuli. The result is greater operational
flexibility, efficiency and safety.
And to further ensure peak performance,
Weatherford can customize the wellhead
assembly to complement your well design.
SAGD Wellhead
3
© 2009 Weatherford. All rights reserved.
High recovery rates plus
high efficiency
• Temperature range: −60°F to 650°F
(−45°C to 343°C) per API 6A
• Special graphoil packing material in the
mandrel tubing hanger enables seals to
withstand temperatures as low as −400°F
(−240°C) and as high as 1,200°F (648°C)
• Mandrel tubing-hanger enables easy
manipulation of additional control lines
• Unitized design enables concentric landing
of multiple strings into one body
• Reduced overall wellhead height provides better
access to all annuli
• API-monogrammed wellhead ensures reliability
• Applicable for both SAGD and sour service (H
2
S)
• Wellhead assembly can be customized to suit your
well design
• Designed, built and backed by Weatherford
• Available in two different configurations—producer or injector—which
are customizable to your specific application
T
he Alberta Energy and Utilities Board credits the SAGD process with helping to increase Canada’s proven oil reserves
to 179 billion bbl—second only to Saudi Arabia. The process features two horizontal wells drilled with about 16 ft (4.9 m)
of vertical separation. Steam is injected into the upper well to heat the crude oil or bitumen, which lowers its viscosity,
enabling it to flow down into the lower wellbore where it is pumped to the surface. Canada, Venezuela and Saudi Arabia
have the world’s largest deposits of bitumen.
SAGD Wellhead
515 Post Oak Blvd., Suite 600
Houston, Texas 77027 USA
Tel: 713-693-4000
weatherford.com
Weatherford products and services are subject to the Company’s standard terms and conditions, available on request
or at weatherford.com. For more information contact an authorized Weatherford representative. Unless noted otherwise,
trademarks and service marks herein are the property of Weatherford. Specifications are subject to change without notice.
Weatherford sells its products and services in accordance with the terms and conditions set forth in the applicable contract
between Weatherford and the client.
© 2009 Weatherford. All rights reserved. 6182.00
Open up the full potential
of heavy-oil reserves.
Weatherford is a single source for products and services to make
heavy oil economical to produce. We have everything it takes
to make the most out of drilling, completion and production in
heavy oil and oil sands. Along with SAGD technology and services,
we can help you meet the challenges of cold production,
cyclic-steam stimulation (CSS) and cold heavy-oil production
with sand (CHOPS).
To find out more about the SAGD wellhead and how Weatherford’s
total heavy-oil capabilities can help you maximize recovery, contact
your Weatherford representative at 403.693.7500 or visit
weatherford.com/wellheads.