E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/128 (2006.01) E21B 33/12 (2006.01) E21B 33/129 (2006.01)
Patent
CA 2231227
A bridge plug (1) for use in a casing (7), for example in oil and/or gas wells, comprising a packing element (2) of a resilient material is disclosed. The packing element (2) is adapted for at impact from a running tool to expand from a first diameter, to a second diameter that is greater than the first diameter which corresponds to the inner diameter of the casing that is to be sealed. The packing element (2) is divided in zones forming at least one expandable sealing packing element (34, 35) and at least one expandable support packing element (31, 32, 33), where the support packing elements (31, 32, 33) are expandable to a smaller diameter than the sealing packing elements (34, 35). The bridge plug (1) is further comprised of an anchoring means (3) that is provided for holding the bridge plug (1) in its place in the casing by a friction surface (28) that is pressed radially against the casing (7).
L'invention concerne un bouchon d'obturation (1) conçu pour être utilisé dans un tubage (7), par exemple, dans des puits de forage d'huile et/ou de gaz, et comprenant un élément de garniture (2) en matériau élastique. Cet élément de garniture (2) est conçu pour se dilater, au moment de l'impact d'un outil en déplacement, depuis un premier diamètre jusqu'à un deuxième diamètre supérieur au premier diamètre correspondant au diamètre intérieur du tubage à obturer. Cet élément de garniture (2) est divisé en zones constituant au moins un élément de garniture dilatable d'obturation (34, 35) et au moins un élément de garniture dilatable de support (31, 32, 33), lesdits éléments de support (31, 32, 33) étant dilatables jusqu'à un diamètre plus petit que lesdits éléments d'obturation (34, 35). Ce bouchon d'obturation (1) est composé, de plus, d'un moyen d'ancrage (3) servant à maintenir ledit bouchon (1) à sa position dans le tubage par une surface de friction (28) poussée radialement contre le tubage (7).
Andersen Frode
Hiorth Espen
Pedersen Dag Ravn
Bronnteknologiutvikling As
Maritime Well Service As
Sim & Mcburney
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