Patent 6446323 Issued on September 10, 2002. Estimated Expiration Date: December 22, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A method of forming a profile (10) in a section of tubing (12) comprises: providing an expander device (14) having at least one radially extendable expander member (22); positioning the device (14) at a predetermined location in the tubing (12); and extending the member (22) to deform the tubing (12) to create a profile (10).
Metcalfe, P.--"Expandable Slotted Tubes Offer Well Design Benefits", Petroleum Engineer International, vol. 69, No. 10 (Oct. 1996), pp. 60-63--XP000684479
U.S. patent application Ser. No. 09/554,677, Wayne Rudd, filed May 17, 2000