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1. WO2001061144 - DIGITAL HYDRAULIC WELL CONTROL SYSTEM

Publication Number WO/2001/061144
Publication Date 23.08.2001
International Application No. PCT/US2001/002306
International Filing Date 24.01.2001
Chapter 2 Demand Filed 07.06.2001
IPC
E21B 34/16 2006.1
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
34Valve arrangements for boreholes or wells
16Control means therefor being outside the borehole
CPC
E21B 23/04
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
23Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
04operated by fluid means, e.g. actuated by explosion
E21B 33/0355
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
02Surface sealing or packing
03Well heads; Setting-up thereof
035specially adapted for underwater installations
0355Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads
E21B 34/10
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
34Valve arrangements for boreholes or wells
06in wells
10operated by control fluid supplied from outside the borehole
E21B 34/16
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
34Valve arrangements for boreholes or wells
16Control means therefor being outside the borehole
E21B 47/12
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
12Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
F15B 13/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13Details of servomotor systems
02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
06for use with two or more servomotors
Applicants
  • HALLIBURTON ENERGY SERVICES, INC. [US]/[US] (AllExceptUS)
  • PURKIS, Daniel, G. [GB]/[GB] (UsOnly)
  • BOULDIN, Brett, W. [US]/[US] (UsOnly)
  • RUBBO, Richard, P. [US]/[US] (UsOnly)
Inventors
  • PURKIS, Daniel, G.
  • BOULDIN, Brett, W.
  • RUBBO, Richard, P.
Agents
  • SMITH, Marlin, R.
Priority Data
09/503,27614.02.2000US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) DIGITAL HYDRAULIC WELL CONTROL SYSTEM
(FR) SYSTEME NUMERIQUE DE COMMANDE HYDRAULIQUE POUR UN PUITS
Abstract
(EN) A system for transmitting hydraulic control signals or hydraulic power to downhole well tools while significantly reducing the number of hydraulic lines required. Hydraulic control signals are furnished at relatively low pressures to actuate a selected well tool, and the hydraulic pressure is selectively increased over a threshold level to provide hydraulic power to the well tool. The hydraulic control actuation signals can be controlled by selectively pressurizing different hydraulic lines in a selected sequence and by selectively powering the fluid pressure within a selected hydraulic line. The combination of selective sequential actuation and selective fluid pressure provides multiple actuation combinations for selectively actuating downhole well tools. Additional combinations can be provided by changing the pressurization sequence, magnitude, absolue time, duration, and pressurization profile within a discrete time period.
(FR) On décrit un système qui permet de transmettre des signaux de commande hydraulique ou de puissance hydraulique à des outils de fond de puits tout en réduisant significativement le nombre de lignes hydrauliques requises. Des signaux de commande hydraulique sont envoyés à des pressions relativement faibles pour actionner un outil de puis sélectionné et la pression hydraulique est sélectivement augmentée au-delà d'un niveau limite pour distribuer la puissance hydraulique à l'outil de puits. Les signaux de mise en oeuvre de commande hydraulique peuvent être régulés au moyen de la mise en pression sélective de lignes hydrauliques suivant une séquence sélectionnée et au moyen de l'activation de la pression du fluide au sein d'une ligne hydraulique sélectionnée. La combinaison de la mise en oeuvre séquentielle sélective et de la pression du fluide sélective produit plusieurs combinaisons de mise en oeuvre pour mettre en oeuvre de manière sélective les outils de fond de trou. D'autres combinaisons peuvent être obtenues si l'on change la séquence de mise en pression, son intensité, le temps absolu, la durée et le profil de mise en pression dans les limites d'une période de temps discret.
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