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1. WO1991000410 - DEVICE FOR GUIDING A DRILLING TOOL INTO A WELL AND FOR EXERTING THEREON A HYDRAULIC FORCE

Publication Number WO/1991/000410
Publication Date 10.01.1991
International Application No. PCT/FR1990/000465
International Filing Date 25.06.1990
IPC
E21B 4/18 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
4Drives for drilling, used in the borehole
18Anchoring or feeding in the borehole
E21B 7/06 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
7Special methods or apparatus for drilling
04Directional drilling
06Deflecting the direction of boreholes
E21B 17/10 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
17Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
10Wear protectors; Centralising devices
E21B 44/00 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
44Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
CPC
E21B 17/1014
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
17Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods ; ; Cables; Casings; Tubings
10Wear protectors; Centralising devices, ; e.g. stabilisers
1014Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
E21B 4/18
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
4Drives used in the borehole
18Anchoring or feeding in the borehole
E21B 44/005
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
44Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems
005Below-ground automatic control systems
E21B 7/062
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
7Special methods or apparatus for drilling
04Directional drilling
06Deflecting the direction of boreholes
062the tool shaft rotating inside a non-rotating guide travelling with the shaft
Applicants
  • INSTITUT FRANÇAIS DU PETROLE [FR/FR]; 4, avenue de Bois-Préau F-92502 Rueil-Malmaison, FR (AllExceptUS)
  • AMAUDRIC DU CHAFFAUT, Benoist [FR/FR]; FR (UsOnly)
Inventors
  • AMAUDRIC DU CHAFFAUT, Benoist; FR
Common Representative
  • INSTITUT FRANÇAIS DU PETROLE; 4, avenue de Bois-Préau F-92502 Rueil-Malmaison, FR
Priority Data
89/0858826.06.1989FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) DEVICE FOR GUIDING A DRILLING TOOL INTO A WELL AND FOR EXERTING THEREON A HYDRAULIC FORCE
(FR) DISPOSITIF POUR GUIDER UN OUTIL DE FORAGE DANS UN PUITS ET EXERCER SUR LUI UNE FORCE HYDRAULIQUE
Abstract
(EN)
The device is interleaved in a string of drilling pipes and is provided with a drilling tool at its lower end. It is comprised of a tubular body (1) and of an outer sleeve (3) rotating about the body and longitudinally displaceable with respect to said body. Radially displaceable pistons (16), in an extension position, come into anchoring engagement in the wall of the well and immobilize the external sleeve (3). A jack (32) is used to displace the body and the drilling tool integral therewith, with respect to the external sleeve and to exert thereby a pushing force onto the tool. A control assembly may without operator, control the execution of a series of successive cycles of anchoring of the external sleeve in the well and of displacement of the drilling tool with respect to the external sleeve. The present invention may be applied to the drilling of oil wells.
(FR)
Le dispositif étant intercalé dans un train de tiges pourvu d'un outil de forage à son extrêmité inférieure. Il comporte un corps tubulaire (1) et une chemise extérieure (3) déplaçable pouvant tourner autour du corps et être déplacée longitudinalement par rapport à lui. Des pistons (16) à déplacement radial viennent, en position d'extension, s'ancrer dans la paroi du puits et immobiliser la chemise extérieure (3). Un vérin (32) est utilisé pour déplacer le corps et l'outil de forage qui lui est solidaire, par rapport à la chemise extérieure et exercer ainsi une poussée sur l'outil. Un ensemble de contrôle peut, sans intervention d'un opérateur, contrôler l'exécution d'une série de cycles successifs d'ancrage de la chemise extérieure dans le puits et de déplacement de l'outil de forage par rapport à celle-ci. La présente invention peut être appliquée au forage de puits pétroliers.
Also published as
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