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Microsoft PowerPoint - 4-PTTC 01-17-05 Thermal 1
© 2003 Weatherford. All rights reserved.
Injection Systems
MAIN MENU
Thermal Systems 2
© 2003 Weatherford. All rights reserved.
Thermal Projects Worldwide
0<1
<30
30+
OOIP - Billion Bbls
Production
California-
San Joaquin
Valley, Midway-
Sunset, and
Cymric Fields
Venezuela-
Orinoco Belt,
Boscan Field
Indonesia-
Duri Field (over
1,000 injectors)
Canada 3
© 2003 Weatherford. All rights reserved.
Thermal Element Used Worldwide
FLEXABLE GRAPHITE High temperature- capable to 1200°F 850°F in oxidizing environments Steam Applications-Tested and rated 650°F 2500 psi Formed graphite shapes
Features
Benefits
Applications 4
© 2003 Weatherford. All rights reserved. Only a quarter-turn rotation required to
set and unset Standard packing system rated to 550°F
(290°C) Optional packing system rated to 650°F
(340°C)- GraphFoil seals Adjustable shear safety release
Features
Arrowset 1-XS Mechanical-Set Thermal
Packer 5
© 2003 Weatherford. All rights reserved. Easy to set and release Holds up to 3,000 psi pressure differential
from above and below Flexible design for variety of completion
requirements
Benefits
Arrowset 1-XS Mechanical-Set Thermal
Packer 6
© 2003 Weatherford. All rights reserved. High-temperature steam injection Huff and puff Geothermal production Water flood injection applications
Applications
Arrowset 1-XS Mechanical-Set Thermal
Packer 7
© 2003 Weatherford. All rights reserved. Thermal premium seal stacks suitable to
650°F and 2,500 psi One-piece polished bore housing Full bore-seal mandrel allows passage of
intervention tools Available in stroke lengths up to 10 ft. Seals are retrieved on the tubing string
Features
e
Polished Seal Bore Receptacle 8
© 2003 Weatherford. All rights reserved.
Polished Seal Bore
Receptacle High-temperature steam injection Huff and puff Geothermal production No tubing manipulation required to set Rugged construction Can be pressure-tested at surface to ensure
seal integrity Reduces installation time
Benefits
Polished Seal Bore Receptacle
e 9
© 2003 Weatherford. All rights reserved.
Polished Seal Bore
Receptacle One-trip installations in deviated or
horizontal wells Production, injection, or stimulation Monobore completions
Applications
e
Polished Seal Bore Receptacle 10
© 2003 Weatherford. All rights reserved. High-pressure thermal packing-element
system Clutched-latch thread allows rotation of
bottom-hole assembly Rotationally locked for ease in milling Slips below element simplify retrieval Uses the same running tools as the
BlackCat GP retrievable packer
Features
BlackCat GPT Thermal Sealbore Packer 11
© 2003 Weatherford. All rights reserved.
BlackCat GPT Thermal Sealbore
Packer Reliable, dependable, field-proven design Easy to retrieve and redress High performance in compact size
Benefits
BlackCat GPT Thermal Sealbore Packer 12
© 2003 Weatherford. All rights reserved.
BlackCat GPT Thermal Sealbore
Packer Thermal gravel packing Huff and puff Steam injection Geothermal production Deviated and horizontal wells
Applications
BlackCat GPT Thermal Sealbore Packer 13
© 2003 Weatherford. All rights reserved.
Injection Systems
MAIN MENU
New Thermal Equipment Developments 14
© 2003 Weatherford. All rights reserved.
Conventional Steam Flood Solutions Multiple tubing strings or large
number of injector wells Significant surface equipment
requirements Significant completion equipment
requirements Large wellbore size Steam generator efficiencies lower
due to higher required injection
pressures 15
© 2003 Weatherford. All rights reserved.
Weatherfords New Steam Flood Solution: The
SteamSaver Injection System Reduces number of injectors Minimizes costs Reduces number of tubing strings Reduces wellbore size Minimizes surface and completion
equipment Lowers surface injection pressure
requirements Maintains steam quality at injection
zones 16
© 2003 Weatherford. All rights reserved.
The SteamSaver Injection Nozzle
Steam Splitter
Nozzle
Achieves critical
velocity at minimal
pressure differential,
or at a pressure
ratio less than 0.90
Prevents segregation of
vapor and liquid from
occurring at injection
point - maintains steam
quality 17
© 2003 Weatherford. All rights reserved.
SteamSaver Injection System Advantages Critical flow
reached with
minimal
differential Constant
injection over
a wider range
of conditions
STEAM FLO
W RATE
PRESSURE RATIO (P2/P1)
0.560
0.90
Standard Orifice
Nozzle 18
© 2003 Weatherford. All rights reserved.
Components
Surface monitoring equipment
to record injection pressure,
injection rate, and steam quality
Steam Injection mandrels which
consist of mandrel, pressure
recovery nozzle, and steam
splitter sleeve
Isolation packers between the
different injection zones
(W-ALS GW-ST cup packers or
thermal packers) 19
© 2003 Weatherford. All rights reserved.
Subsurface Steam Injection Equipment
CM-2ST:
Conventional (tubing retrievable) steam injection mandrel for
1.5-in. nominal OD steam nozzles.
(2-3/8 in. thru 4-1/2 in. sizes available)
COV-2-ST:
Pressure recovery steam nozzle for conventional steam
injection mandrel.
(10/64-in. thru 11/16-in. sizes available)
C-2ISST:
Insert steam splitter sleeve for conventional steam injection
mandrel.
(sized for specific steam nozzle size)
SFO-2ST:
Sidepocket steam injection mandrel for retrievable 1.5-in. OD
Steam Nozzles.
(2-3/8 in. thru 5-1/2 in. sizes available)
ROV-2-ST:
Wireline retrievable, pressure recovery steam nozzle for
sidepocket steam injection mandrel with integral latch device.
(10/64-in. thru 11/16-in. sizes available)
RIS-2-ST:
Wireline retrievable, insert steam splitter sleeve for sidepocket
steam injection mandrel.
(sized for specific steam nozzle size)