The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 1995
Filed:
May. 03, 1994
Joseph H Schmidt, Anchorage, AK (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
Methods are provided for overpressured perforating and fracturing of a subsurface formation in a substantially deviated well. A perforating gun is run into the well and is pushed through the deviated portion thereof on a coiled tubing string. The coiled tubing string contains an internal supporting pressure which is high enough to prevent collapse of the coiled tubing string prior to perforation of the well and which is low enough to avoid rupturing the coiled tubing string. After the perforations are formed and the fractures are initiated, the supporting gas pressure in the coiled tubing string is bled off to the atmosphere and the coiled tubing string and perforating gun are retrieved.