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:
Jan. 15, 2013
Filed:
Jul. 09, 2010
Lee M. Smith, Anchorage, AK (US);
Alan B. Webb, Burleson, TX (US);
Vijay Karode, Carrollton, TX (US);
Karl M. Tunstall, Highlands Ranch, CO (US);
Lee M. Smith, Anchorage, AK (US);
Alan B. Webb, Burleson, TX (US);
Vijay Karode, Carrollton, TX (US);
Karl M. Tunstall, Highlands Ranch, CO (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A well system can include a drill string having a drill bit at an end thereof, and a swellable seal exposed to fluid in an annulus external to the drill string. The swellable seal can include a swellable material which swells in response to the fluid comprising a predetermined activating agent. A method of preventing undesired release of fluid from a wellbore can include displacing a drill string through the wellbore, thereby drilling the wellbore, and installing in the wellbore a swellable seal which, in response to the fluid comprising a predetermined activating agent, reduces flow through an annulus formed radially between the drill string and the wellbore. Another well system can include a swellable seal carried into a wellbore on a drill string, with the swellable seal including a swellable material which swells in response to a fluid in the wellbore comprising a predetermined activating agent.