A presentation to NFBL February 2007 By Sverre Anderssen Swell Technology for zonal isolation
A presentationto NFBL February 2007
BySverre Anderssen
Swell Technology for zonal isolation
• Head office in Stavanger, Norway• Started in 2001 • Worldwide market• Focus on zonal isolation and reservoir
technology• Acquired by Halliburton in November 2005• Halliburton Completion Tools• www.easywell.com
Easywell
Swellpacker™ Components
Global Installations
•4000+ packers and constrictors installed in 500+ wells
AddaxAmerada Hess BP BG GroupConocoPhillips DONGJVPCSantosPetroChinaSaudi AramcoPetro-CanadaAGIPAERA Energy
Kerr McGeeMaerskMarathon PetroleumKuwait Oil CompanyNorsk HydroShellStatoilCNOOCSocoPetronasTotalCNRWintershall
PemexFronteraPlainsOil SearchROC OilTalismanExxonMobilApacheNexenOxyChevronTexacoPDOTullow
Swellpacker™
Open up the wellbore increase productivityEliminate moving parts reduce failure modeOne-trip installation reduce rig time
In additionNo extra personnel
No Hazardous Materials and it is simple to handle
• Differential pressure capability• Swelling volume• Swelling time – first seal• Swelling time – operational pressure• Element length• Operational pressure requirement• OBM and WBM• Cable feed through
Simulator Software
Differential pressure
• The Swellpacker can be manufactured on all pipe sizes
• Slimmer pipe means thicker rubber with same packer OD
• More rubber means greater swelling, for higher differential pressure
• Longer packer length increases differential pressure capability
• Swells to seal irregular boreholes
4.5″
5.5″
6.625″
7″
8.15″
050
100150200250300350400450500550600650700750
8,4 8,6 8,8 9 9,2 9,4 9,6 9,8 10 10,2 10,4 10,6 10,8
Hole ID [in]
Diffe
rent
ial p
ress
ure
[bar
]
07251450217529003625435050755800652572507975870094251015010875
Diff
eren
tial p
ress
ure
[psi
]
4.5inx8.15inx9m Sw ellpacker5.5inx8.15inx9m Sw ellpacker6.625inx8.15inx9m Sw ellpacker7inx8.15inx9m Sw ellpacker
Swellpacker™ OBM
Swelling profiles for 5.5inx8.15in Swellpackers swollen in base oil, 100degC
0
5
10
15
20
25
30
35
40
45
50
8,3 8,4 8,5 8,6 8,7 8,8 8,9 9Swellpacker OD [in]
Tim
e to
firs
t sea
l [da
ys]
Swellpacker OBM HTSwellpacker OBM slowSwellpacker OBM mediumSwellpacker OBM fastSwellpacker WBM
• SwellpackerTM WBM• SwellpackerTM OBM• SwellpackerTM HT• SwellpackerTM HP• SwellpackerTM Cable• ConstrictorTM
• Cement AssuranceTM
• SwellpackerTM Lite
Easywell Swell TechnologyTM
Swellpacker WBM
• One rubber layer• Swells after production start up• No delay functionality
Basepipe
High swelling polymer
• Delays swelling to run in hole
• 3-layer construction• Engineered swelling
– OBM Fast– OBM Medium– OBM Slow– OBM HT
Swellpacker™ OBM
Low Swelling Outer Layer
OBM Diffusion Barrier
High Swelling Core
Swellpacker™ Lite
Swelling Element• Slip on design
Element Length• 1 meter (3.3 ft)
End Rings• aids deployment• elastomer support
• 70 bar rated• Standard API casing sizes• Custom sizes available• Installed at wellsite or pipe yard• Under development
Constrictor™
Modular slide-on packerDiverts annular flowProtects sand screensAlso Water Injectors
Swel
l Pac
ker
Sand
scr
eens
Con
stric
tor
Swellpacker Cable - Tripple
• Liquid Hydrocarbon– Swellpacker must be swollen in liquid Hydrocarbon
• OBM, Base Oil, Diesel, Crude, Synthetic Oil, condensate...– Heavy crudes take longer to swell and lighter crudes are faster
• Gas– Swellpacker will swell in gas but has limited differential pressure
capability– Swellpacker is stable in gas after swollen in liquid hydrocarbon
• Water– Swellpacker polymer does not attract water molecules– Swellpacker is stable in water after swollen in liquid hydrocarbon– Swellpacker will swell in high water cuts (even ppm will swell
over time)
Impact of Fluid Type
Swelling in high watercuts
• Swelling occurs in low oil saturation– Due to affinity between rubber and oil
• Swelling with low oil fraction take longer time
• Swellpacker is resistant to chemical attack– Tests performed with numerous oilfield chemicals at downhole
conditions (150°C)• Organic and non-organic acids• Scale inhibitors• Heavy brines• H2S, CO2
• Temperature can degrade the mechanical properties of rubber– Laboratory tests
• High temperature-250C• 3 months• Crude oil• Arrhenius correlation
– Result• 20 years at 190°C.• More than doubled for every 10°C decrease
Chemical & Temperature
40180
80170
20190
10 200
Estimated lifetime [years]
BHT [Co]
ESSOpen HoleCarbonate
Stimulation/ water control
Replace cementin reservoir / perforation
Gravel PackIsolation/
Replacement
Open Hole screen
isolation
SmartWell
Mechanical inflowcontrol
Open Holestraddle
Cased Holestraddle
Multilateraljunction
Open Holefrac
Expandable
Gas
Cement Assurance
HPHTHeavy oil
Applications
Slim hole
Water
Swell Technology™ reference list
• 4000+ Swellpackers and constrictors installed • Down to 10000m measured depth• Horizontals and vertical wells• MLTs and slimholes• Stimulation and smart wells• From 27°C (80°F) to 178°C (352°F)• 60+ operators including all majors• All continents
Summary• Swellpacker™
– Engineered swelling time – No mechanical parts to go wrong– Simple operational deployment– >4000 packers and constrictors successfully installed
• New developments– Thermopacker– Gaspacker