EP 1250513 B1 20050406 - SYSTEM AND METHOD FOR FLUID FLOW OPTIMIZATION IN A GAS-LIFT OIL WELL
Title (en)
SYSTEM AND METHOD FOR FLUID FLOW OPTIMIZATION IN A GAS-LIFT OIL WELL
Title (de)
SYSTEM UND VERFAHREN ZUR FLÜSSIGKEITSSTRÖMUNGSOPTIMIERUNG IN EINER GASLIFTÖLBOHRUNG
Title (fr)
SYSTEME ET PROCEDE D'OPTIMISATION D'ECOULEMENT DE FLUIDE DANS UN PUITS DE PETROLE A EXTRACTION AU GAZ
Publication
Application
Priority
- EP 0100740 W 20010122
- US 17799700 P 20000124
Abstract (en)
[origin: WO0155553A1] A controllable gas-lift well having controllable gas-lift valves and sensors for detecting flow regime is provided. The well uses the tubing and casing to communicate with and power the controllable valve from the surface. Ferromagnetic chokes at the surface and downhole electrically isolate the tubing from the casing. A high band-width, adaptable spread spectrum communication system is used to communicate between the controllable valve and the surface. Sensors, such as pressure, temperature, and acoustic sensors, may be provided downhole to more accurately assess downhole conditions and in particular, flow regime. Operating conditions, such as gas injection rate, back pressure on tubing and position of downhole controllable valves are varied depending on flow regime, downhole conditions, oil production, gas usage and availability, to optimize production. An Artificial Neural Network (ANN) is trained to detect Taylor flow regime using downhole acoustic sensors, plus other sensors as desired. The detection and control system and method thereof is useful in many applications involving multi-phase flow in a conduit.
IPC 1-7
IPC 8 full level
E21B 17/00 (2006.01); E21B 34/06 (2006.01); E21B 34/08 (2006.01); E21B 34/16 (2006.01); E21B 43/12 (2006.01); E21B 43/14 (2006.01); E21B 47/10 (2012.01); E21B 47/12 (2012.01); E21B 47/14 (2006.01); H04B 5/00 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP US)
E21B 17/003 (2013.01 - EP); E21B 34/066 (2013.01 - EP); E21B 34/08 (2013.01 - EP); E21B 34/16 (2013.01 - EP); E21B 43/123 (2013.01 - EP US); E21B 43/14 (2013.01 - EP); E21B 47/107 (2020.05 - EP); E21B 47/12 (2013.01 - EP US); E21B 47/13 (2020.05 - EP); E21B 2200/22 (2020.05 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0155553 A1 20010802; AT E292742 T1 20050415; AU 3733701 A 20010807; AU 767417 B2 20031106; BR 0107821 A 20040706; BR 0107821 B1 20100908; DE 60109894 D1 20050512; DE 60109894 T2 20060323; EP 1250513 A1 20021023; EP 1250513 B1 20050406; MX PA02007176 A 20030128; NO 20023501 D0 20020723; NO 20023501 L 20020913; NO 330977 B1 20110829; OA 12141 A 20060505; RU 2002122762 A 20040127; RU 2256067 C2 20050710
DOCDB simple family (application)
EP 0100740 W 20010122; AT 01909683 T 20010122; AU 3733701 A 20010122; BR 0107821 A 20010122; DE 60109894 T 20010122; EP 01909683 A 20010122; MX PA02007176 A 20010122; NO 20023501 A 20020723; OA 1200200224 A 20010122; RU 2002122762 A 20010122