Pre-milled windows having a composite material covering
US10053940B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2013 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jun 20, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A casing section comprising: a body comprising a wall; a window, wherein the window is an opening in the wall of the body; and a covering, wherein the covering: (A) is composed of a composite material; (B) is located on the outer surface of the body; (C) covers the window; and (D) spans at least a sufficient distance beyond the perimeter of the window such that the casing section has a desired pressure rating at the location of the window. A method of creating a lateral wellbore in a subterranean formation comprising: introducing a casing string into a wellbore, wherein the casing string comprises at least one casing section; drilling through at least a portion of the covering from the inside of the casing string to expose the window; and forming the lateral wellbore adjacent to the exposed window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.