"APPARATUS FOR AND METHOD OF PROTECTING MATERIAL APPLIED TO AN OUTER SURFACE OF A CONDUTT"
Application IN/PCT/2002/332/CHE published 2005-05-20, filed 2002-04-03
"The present invention relates to portions of casing that are inserted into a wellbore. The casing portions are provided with a protected portion in which a friction and/or sealing material can be located. In certain embodiments, the protected portion is provided by first and second annular shoulders that are spaced-apart axially along the length of the casing. The friction and/or sealing material is typically located on an outer surface of the casing between the annular shoulders. There is also provided a casing portion that has annular shoulders provided at either end of the casing portion, with means to connect successive casing portions located on these shoulders. The casing portion in this embodiment is provided with a friction and/or sealing material in a recessed portion of the casing portion."
Applicant
E2 TECH LIMITED,
of 47 Woodside Road, Bridge of Don,, Aberdeen AB23 8EF, United Kingdom,, A British Company
Inventor
International Info
Classification: E21B 3/10; E21B 29/10 & E16L 55/162
Publication Number: PCT/GB00/03403
Priority Information
9920934.8 British 1999-09-06
9925017.7 British 1999-10-23