Downhole pressure pulse activated by jack element

Details Downhole pressure pulse activated by jack element Downhole pressure pulse activated by jack element

2007-06-21

2008-12-16

Dang, Hoang (Department: 3672)

Boring or penetrating the earth

Natural vibration characteristic of an element of boring...

C175S057000, C175S389000

Reexamination Certificate

active

07464772

ABSTRACT:
In one aspect of the present invention, a method has steps for forming a wellbore with a tool string bit having a body intermediate a shank and a working face. The bit body has a fluid passageway and at least a portion of a jack element is disposed within the body. The jack element also has an end forming at least a portion of a relief mechanism in the fluid passageway and a distal end substantially protruding from the working face. The bit connected to a tool string is deployed into a wellbore. Fluid is passed through the fluid passageway. A bottom of the wellbore is destructed by pulsing the fluid traveling through the passageway by opening and closing the relief mechanism.

REFERENCES:
patent: 2054255 (1936-09-01), Howard
patent: 2746721 (1956-05-01), Moore
patent: 4637479 (1987-01-01), Leising
patent: 4817739 (1989-04-01), Jeter

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