Method of fabrication, tooling and installation of downhole seal

Details Method of fabrication, tooling and installation of downhole seal Method of fabrication, tooling and installation of downhole seal

1997-05-23

2000-05-23

Cuda, Irene

Metal working

Method of mechanical manufacture

Gas and water specific plumbing component making

29508, B23P 1500

Patent

active

060652098

ABSTRACT:
Multi-lateral wells include one or more connections between a larger diameter well casing and liner-equipped branch-wells of smaller diameter initiated with a small angle deviation from the casing axis, so as to facilitate the sequential insertion of the directional drilling string and of the liner string, used respectively for drilling and for completing each lateral branch. Each such insertion requires, in the casing string, an elliptical window cutout presenting a vertical axis of more than ten feet and a horizontal axis of only a few inches, corresponding to the diameter of the branch-well.

REFERENCES:
patent: 3253841 (1966-05-01), Ahmad
patent: 3943615 (1976-03-01), Smith et al.
patent: 5079824 (1992-01-01), Lopez et al.
patent: 5348211 (1994-09-01), White et al.
patent: 5462120 (1995-10-01), Goudouin

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