Non-metallic whipstock

Details Non-metallic whipstock Non-metallic whipstock

2009-08-18

2011-12-06

Bagnell, David (Department: 3672)

Wells

Means for guiding insertable element laterally of well axis

Secured in operative position by movable means engaging well...

C175S081000

Reexamination Certificate

active

08069915

ABSTRACT:
A whipstock that is totally to substantially non-metallic is made preferably from a composite material. The body can include one or more stiffeners that are also preferably non-metallic. The mounting lug for the window mill can also be non-metallic. A metallic base can be used to connect to an anchor. Optionally the ramp can include a plate that is optionally internally supported. Alternatively the ramp can include hardened inserts or other wear resistant material. Composite materials that can be molded are preferred.

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Garfield, Garry, et al., “Coiled Tubing Re-Entry Whipstocks: The Next Evolutionary Step in Drilling Practices for Mature-Filed Development”, SPE/IADC 105853, Feb. 2007, 1-5.
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