We now have access to the Society of Petroleum Engineers(SPE) eLibrary which is a repository of technical papers presented at SPE-sponsored conferences and in SPE’s technical journals since early 1950s. Access requires Princeton authentication (no walk-ins allowed) and individual user registration. Once an individual account is created, login, then go to the Papers/Publications/Authors section at the top menu and click on eLibrary/Technical Papers to search. You must save papers of interest to cart and complete the check-out process (the cart will show $0.00 at check-out) to download the papers.
From Adriana Popescu, Engineering Librarian, Jan. 30, 2008