Valve for wellbore applications

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 34/06 (2006.01) F16K 3/24 (2006.01)

Patent

CA 2735086

A valve part for inclusion in a tubular, comprising a substantially cylindrical outer valve housing (2) having radially extending side ports (17) and an inner sliding sleeve (3) mounted axially movable and rotation locked inside the valve housing (2). The sliding sleeve (3) comprises first, second and third sealing means (8,6,13), which sealing means (8,6,13) all are disposed around the entire circumference of the sliding sleeve (3) and in contact with an inner sealing surface of the valve housing (2). The axial distance between the first (8) and second (6) sealing means is greater than the length of the valve housing (2) comprising the side ports (17), and the axial distance between the second (6) and third (13) sealing means is greater man the length of the valve housing (2) comprising the side ports (17).

L'invention concerne une pièce de vanne destinée à être incluse dans un tubulaire et comportant un boîtier extérieur (2) de vanne sensiblement cylindrique doté dorifices latéraux (17) sétendant radialement et dune douille intérieure coulissante (3) montée de façon mobile axialement et immobilisée en rotation à lintérieur du boîtier (2) de vanne. La douille coulissante (3) comporte des premier, deuxième et troisième moyens (8, 6, 13) détanchéité qui sont tous disposés sur lensemble de la circonférence de la douille coulissante (3) et en contact avec une surface intérieure détanchéité du boîtier (2) de vanne. La distance axiale entre le premier (8) et le deuxième (6) moyen détanchéité est supérieure à la longueur du boîtier (2) de vanne comportant les orifices latéraux (17) et la distance axiale entre le deuxième (6) et le troisième (13) moyen détanchéité est supérieure à la longueur du boîtier (2) de vanne comportant les orifices latéraux (17).

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