E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/30 (2006.01) E21B 33/047 (2006.01)
Patent
CA 2152383
A process for drilling and completing multiple subterranean wells from a common well bore (9) and an assembly for guiding a drill string during drilling and casing during completion of such multiple wells. The assembly comprises a wellhead (6) located at or near the surface of the earth and positioned over the common well bore (9), at least two tubulars (30, 34) positioned within the common well bore, and means positioned at said wellhead (6) for segregating and supporting the tubulars. In accordance with the process, at least one subterranean well bore is drilled through one of the tubulars (30, 34) and into a subterranean formation and hydrocarbons can be produced from the subterranean formation to the surface via production casing and/or production tubing positioned within the subterranean well bore (9). Other subterranean well bores can be drilled in a similar manner through other tubulars of the assembly.
Procédé permettant de forer et d'achever des puits souterrains multiples à partir d'un puits commun (9) et ensemble destiné à guider une garniture de forage pendant le forage et le tubage au cours de l'achèvement de ces puits multiples. Ledit ensemble comporte une tête (6) de puits située à la surface ou à proximité de la surface du sol et placée au-dessus du puits commun (9), au moins deux éléments tubulaires (30, 34) placés dans le puits commun et des dispositifs placés au niveau de ladite tête (6) de puits destinés à séparer et à soutenir les éléments tubulaires. Selon ledit procédé, au moins un puits souterrain est foré à travers l'un des éléments tubulaires (30, 34) dans une formation souterraine. Les hydrocarbures peuvent être acheminés de la formation souterraine vers la surface par une colonne de production et/ou un tube de production placés dans le puit souterrain (9). D'autres puits souterrains peuvent être forés de manière similaire à travers d'autres éléments tubulaires de l'ensemble.
Baudoin Ervin
Collins Gary J.
Macrae & Co.
Marathon Oil Company
LandOfFree
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