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AICV InflowControl
Citation preview
InflowControl AS &
Autonomous Inflow Control Valve (AICV)
Vidar Mathiesen, Dr.ing
CEO
November 20, 2014
Motivation Increased Recovery
2
Increased production and recovery is necessary
Averaged recovery is 46 %, NCS
1 % increased recovery gives 70 billion $, NCS
Lower recovery factors in most of the world
Norwegian Continental Shelf (NCS):
Why AICV? Long horizontal wells to ensure maximum reservoir contact
Friction inside the well
Heterogeneous reservoirs (permeability and formation variations)
Non-uniform well drainage creates gas/water breakthrough
Gives reduced production
Gives reduced recovery
Requires large gas/water handling systems
State of the art technology (ICD) can delay the breakthrough problem: but cannot stop the gas/water problem at breakthrough
3
Gas
Oil
Water
AICV - Autonomous Inflow Control Valve Combines the best from ICD, AICD and ICV:
Autonomous; requires no external power or control
Effective; can stop the gas/water completely
Reversible; allow oil production after an earlier breakthrough
Distributed; no limit in number of zones
Retrofitable; can be installed in new and old wells
Compatible; with standard completion (screens)
Design of the AICV The pressure in the pilot flow
controls the main flow
Large flexibility of design/application;
ICD strength
Laminar flow and turbulent flow element
Area inlet and area pressure chamber
Oil Water Pilot-
flow:
Turbulent flow element
Laminar flow element
InflowControl
AICV Applications Based on the viscosity difference between the fluids the AICV stops the unwanted fluid autonomously. 1. Ultra Light Oil, API > 34
Gas shut-off, Reservoir viscosity less than 2 cP
2. Light Oil, 34 < API < 31 Gas and water shut-off, Reservoir viscosity 2- 5 cP
3. Medium Oil, 22 < API < 31 Gas and water shut-off, Reservoir viscosity 5-50 cP
4. Heavy Oil, 10 < API < 22 Gas and water shut-off, Viscosity larger than 50 cP
5. Extra Heavy Oil / bitumen, API < 10 Steam and water shut-off for SAGD
6. AICV for gas wells Liquid shut-off
7. AICV for oil wells with CO2 injection (EOR) CO2 Gas & Water shut-off
Summary AICV
Shut-off unwanted fluid (gas, water) production Reduced GOR, WC
Increased production
Increased recovery
Reduced investment
Only known technology
Huge potential
Field tests are planned for 2015 Canada
Saudi Arabia
Thank you!
Vidar Mathiesen, Dr.ing
CEO, Inflowcontrol AS
+47 93 09 61 93
www.inflowcontrol.no