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1. (WO1998053174) APPARATUS AND METHOD FOR DRILLING AND LINING A LATERAL WELLBORE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/053174 International Application No.: PCT/GB1998/001476
Publication Date: 26.11.1998 International Filing Date: 21.05.1998
IPC:
E21B 7/06 (2006.01) ,E21B 41/00 (2006.01) ,E21B 43/10 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
7
Special methods or apparatus for drilling
04
Directional drilling
06
Deflecting the direction of boreholes
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41
Equipment or details not covered by groups E21B15/-E21B40/95
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
02
Subsoil filtering
10
Setting of casings, screens or liners in wells
Applicants:
INTEGRATED DRILLING SERVICES LIMITED [GB/GB]; Badentoy Road Badentoy Park Portlethen Aberdeen AB12 4YA, GB (AllExceptUS)
BUYTAERT, Jean [FR/GB]; GB (UsOnly)
Inventors:
BUYTAERT, Jean; GB
Agent:
MURGITROYD & COMPANY; 373 Scotland Street Glasgow G5 8QA, GB
Priority Data:
9710318.821.05.1997GB
Title (EN) APPARATUS AND METHOD FOR DRILLING AND LINING A LATERAL WELLBORE
(FR) DISPOSITIF ET PROCEDE PERMETTANT DE FORMER UN PUITS A CANALISATIONS GRACE AU FORAGE ET A L'UTILISATION D'UNE COLONNE PERDUE
Abstract:
(EN) A casing string for insertion into the first borehole, a portion of the casing string having a window in its side wall through which a drill bit can pass, the window having a central axis which is at an oblique angle to the central longitudinal axis of the portion of the casing in which the window is located; and a tubular member located within the casing string and arranged so that the longitudinal axis of the tubular member is substantially coincident to the central axis of the window, so that a portion of the tubular member can pass through the window to protrude from the casing.
(FR) L'invention se rapporte à une colonne de tubage destinée à être insérée dans le premier trou de forage, une partie de cette colonne étant dotée d'une fenêtre ménagée dans sa paroi latérale et à travers laquelle un trépan peut passer. Cette fenêtre présente un axe central qui forme un angle avec l'axe longitudinal central de la partie de la colonne dans laquelle se trouve la fenêtre, ces deux axes se coupant de manière oblique. L'invention concerne également un élément tubulaire situé à l'intérieur de la colonne de tubage et conçu de telle manière que l'axe longitudinal de l'élément tubulaire coïncide sensiblement avec l'axe central de la fenêtre, ainsi, une partie de l'élément tubulaire peut passer à travers la fenêtre afin de faire saillie à partir de ladite colonne.
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Designated States: CA, NO, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)