High Technology Wells
September 21, 2013 |
PetParoleumtII - WellPolicycompletionand Operations,design |
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PETRAD |
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What is a high technology well?
Multibranch well (fifth and sixth generations)
Well with complex profile
Well equipped with downhole measurement systems
Well with inflow control systems (passive or active)
First multibranch well after A.M. |
Troll well (North Sea, Norway) SPE 100308 |
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Grigoryan (Bashkiria, 1953) |
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Part II - Well completion design |
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Prepared by Alexey Khrulenko, 2010 |
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Multibranch / Multilateral Wells
http://www.slb.com/media/services/resources/oilfieldreview/ors02/aut02/p52_69.pdf
Prepared by Alexey Khrulenko, 2010
Part II - Well completion design
«Smart» wells
«Smart well», «Intelligent well » or «High Technology Well» – a well that has several components for acquisition, transmission and
analysis of production and reservoir data that Oil enable inflow control at separate perforation
intervals for production optimization purpose without well intervention
Main elements:
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Inflow Control Valves (ICV), unlike Inflow |
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Oil |
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Control Devices (ICD) are operated from |
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the surface and enable to control rate of |
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production from several perforated |
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intervals |
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Water |
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Downhole measurement systems |
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– production casing |
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Packers isolating perforated intervals |
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– production tubing |
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– inflow control devices |
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•Prepared by Alexey Khrulenko, 2010 Part II - Well completion |
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– packers |
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design |
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– pressure and temperature transmitters |
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Inflow Control Valves
Inflow Control Valves can be classified according to the following attributes:
Number of positions they can take:
Two-point ICV, enable to take only two positions (“on/off”);
Multipoint ICV (6-11 positions), (Fig. on the left)
Infinite point ICV (Fig on the right)
Type of control system:
Hydraulic (for two-point and multipoint ICV)
Electric (for infinite-point ICV)
Combined (for all types)
Part II - Well completion
Prepared by Alexey Khrulenko, 2010
High Technology Wells.
Main manufacturers and geography of deployment
Main manufacturers of high technology assembly (SPE 106011, 2006):
WellDynamics (Haliburton’s division) ~50% of market
Baker Hughes and Schlumberger - 20-25% each
The rest is split between BJ Services, Weatherford and others
Main regions of use :
North Sea and Norwegian Continental Shelf;
GOM;
Shelves of Bruney and Malaisya;
Offshore / onshore fields on the Persian Gulf countries;
Shelf of Nigeria;
Shelf of Brasil
Part II - Well completion design
Prepared by Alexey Khrulenko, 2010
Tasks that can be solved by means of «Smart Wells»
1.Optimal production from several reservoirs
2.Control of injection to several reservoirs
3.Drainage of several oil zones in separate reservoirs
4.Production from oil rims
5.Intrawell gas lift
6.Variable gas production
7.Inflow control from several boreholes of a multibranch well
8.Increase of sweep efficiency in a system of producing and injection wells
9.Etc.
+ combinations of the above tasks
Part II - Well completion design
Prepared by Alexey Khrulenko, 2010