초록 ▼

New systems and methods have been invented for explosively forming openings, ledges, windows, holes, and lateral bores through tubulars such as casing, which openings may, in cerain aspects, extend beyond the casing into a formation through which a wellbore extends. In certain aspects openings (e.g.

New systems and methods have been invented for explosively forming openings, ledges, windows, holes, and lateral bores through tubulars such as casing, which openings may, in cerain aspects, extend beyond the casing into a formation through which a wellbore extends. In certain aspects openings (e.g. ledges, initial, or completed windows) in wellbore tubulars (e.g. tubing or casing) are made using metal oxidizing systems, water jet systems, or mills with abrasive and/or erosive streams flowing therethrough and/or therefrom.

대표청구항 ▼

[ What is claimed is:] [1.] A method for making a window in a selected wellbore casing member for a wellbore sidetracking operation therethrough, the wellbore extending from an earth surface down into the earth, the method comprisinginstalling through the wellbore a system for making the window, the

[ What is claimed is:] [1.] A method for making a window in a selected wellbore casing member for a wellbore sidetracking operation therethrough, the wellbore extending from an earth surface down into the earth, the method comprisinginstalling through the wellbore a system for making the window, the system including explosive means interconnected to a location device, the explosive means for explosively forming the window in the selected wellbore casing member, the explosive means including at least one explosive charge sized and configured to create the window and to create a minimum of debris in the wellbore, anddetonating the at least one explosive charge to explosively form the window.