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1. WO1996038649 - ACTIVATING MEANS FOR A DOWN-HOLE TOOL

Publication Number WO/1996/038649
Publication Date 05.12.1996
International Application No. PCT/GB1996/001275
International Filing Date 30.05.1996
Chapter 2 Demand Filed 11.11.1996
IPC
E21B 23/00 2006.01
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
23Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/04 2006.01
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
23Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
04operated by fluid means, e.g. actuated by explosion
E21B 33/129 2006.01
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
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
129with mechanical slips for hooking into the casing
E21B 33/1295 2006.01
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
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
129with mechanical slips for hooking into the casing
1295actuated by fluid pressure
E21B 43/10 2006.01
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
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
02Subsoil filtering
10Setting of casings, screens or liners in wells
CPC
E21B 23/00
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
E21B 23/06
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
06for setting packers
E21B 33/129
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
129with mechanical slips for hooking into the casing
E21B 33/1295
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
10in the borehole
12Packers; Plugs
129with mechanical slips for hooking into the casing
1295actuated by fluid pressure
E21B 43/10
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
43Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
02Subsoil filtering
10Setting of casings, screens, liners ; or the like; in wells
Applicants
  • WEATHERFORD/LAMB. INC. [US]/[US] (AllExceptUS)
  • TELFER, George [GB]/[GB] (UsOnly)
Inventors
  • TELFER, George
Agents
  • LUCAS, Brian, Ronald
Priority Data
9510923.731.05.1995GB
9515419.127.07.1995GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACTIVATING MEANS FOR A DOWN-HOLE TOOL
(FR) SYSTEME D'ACTIONNEMENT POUR OUTIL DE FOND DE PUITS
Abstract
(EN)
An activating means for activating a down-hole tool incorporates a magnet, which may include an attracting magnet (12) and a repelling magnet (13), and which may move under hydraulic pressure from an active position at which it causes a trigger, valve (8) or spring to be energised to a non active position at which the tool is not activated, the activating means thereby utilising hydraulic pressure without requiring hydraulic ports in the liner or mandrel.
(FR)
Cette invention concerne un système d'actionnement d'un outil de fond de puits, lequel système comprend un aimant se composant d'un aimant attractif (12) et d'un aimant répulsif (13). Sous l'effet d'une pression hydraulique, cet aimant peut passer d'une position active, durant laquelle il entraîne le fonctionnement d'un déclencheur, d'un clapet (8) ou d'un ressort, à une position non active durant laquelle l'outil n'est pas actionné. Ce système d'actionnement fait appel à la pression hydraulique sans pour autant nécessiter la présence d'orifices hydrauliques dans le revêtement ou le mandrin.
Also published as
NO19974949
Latest bibliographic data on file with the International Bureau