Method and apparatus for treating a wellbore with vibratory...

E - Fixed Constructions – 21 – B

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E21B 28/00 (2006.01) E21B 43/00 (2006.01) E21B 43/18 (2006.01) E21B 43/25 (2006.01) G01V 1/44 (2006.01)

Patent

CA 2436966

A process and apparatus (200) for treating a wellbore (105) comprising subjecting a substantially same portion of the wellbore (105) to vibratory waves (220) produced by a plurality of wave generators (205 and 210). The waves (220) may have about the same frequency or a plurality of frequencies and the frequencies may partially overlap, not overlap, or be modulated across a range. Additionally, the frequencies may be modulated in an oval, hoop, and flexural modes. The vibratory waves (220) may be produced by firing the vibratory wave generators (205 and 210) simultaneously or in sequence. The wave generators (205 and 210) maybe a vibrating pipe, a piston, or a valve.

L'invention se rapporte à un procédé et à un appareil (200) destinés au traitement d'un puits de forage (105) et consistant à soumettre sensiblement une même partie d'un puits de forage (105) à des ondes vibratoires (220) générées par plusieurs générateurs (205 et 210) d'ondes. Les ondes (220) peuvent avoir les mêmes fréquences ou plusieurs fréquences et ces fréquences peuvent se chevaucher partiellement ou non ou être modulées sur une gamme. En outre, ces fréquences peuvent être modulées en mode cercle ovale ou en mode de flexion. Les ondes vibratoires (220) peuvent être générées par la mise en route simultanée ou séquentielle des générateurs (205 et 210) d'ondes. Ces générateurs (205 et 210) d'ondes peuvent consister en un conduit de vibration, un pulsar à piston ou une soupape.

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