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:
May. 24, 2005
Filed:
Apr. 07, 2003
Benjamin Tai-an Chang, Houston, TX (US);
Jane Qing Zhang, Sugar Land, TX (US);
Benjamin Tai-An Chang, Houston, TX (US);
Jane Qing Zhang, Sugar Land, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
Disclosed is a method of either plugging or lining a wellbore or casing using a polymer member into which stored energy or shape memory has been introduced. The shape memory is introduced into the member by reducing its diameter, such as by compressing the member using a rolling mill machine or stretching the member axially. Next, the member is lowered into a desired location in the wellbore or casing and subjected to conditions causing at least partial recovery of the anelastic strain. The conditions causing recovery of the anelastic strain can include heat from the reservoir surrounding the wellbore, heat introduced into the wellbore, solvents, and combinations thereof. Recovery of the anelastic strain causes the member to expand in diameter, thus plugging or lining the wellbore or casing at the desired location.