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:
Apr. 23, 1996
Filed:
Sep. 26, 1994
David B Dillon, Aliso Viejo, CA (US);
David O'Mara, Canyon Country, CA (US);
Trico Industries, Inc., Huntington Park, CA (US);
Abstract
A perforation trigger bypass conduit assembly (10) for a well perforation gun (17) positioned in a well casing (12) at a down-hole location below a tubular completion assembly (16). A pressure sensing device (20) senses a detonation pressure of fluid communicated from a pump (21) through bypass conduit assembly (10) to the sensor (20). The sensing device (20) triggers the gun upon sensing a pressure surpassing a predetermined value, which perforates the casing (12). The bypass conduit assembly (10) is formed to enable blocking of the bypass conduit assembly (10) after triggering of the perforation gun (17) to prevent pumping of production and power fluid back into the formation upon severing of a portion (34) of the conduit assembly (10). Blocking can be effected by removing a member (25) which contains a passageway (51) forming part of the bypass conduit assembly (10) and replacing the removable member (25) with a passageway-free insert member (35).