Zakaria Lasemi, John P. Grube Illinois State Geological Survey Champaign Recent completions of relatively prolific wells in the mid-Mississippian Ullin limestone (Fig. 1) (19015 bytes) have generated considerable excitement about this Illinois basin play. Reservoirs found within this limestone, commonly referred to by industry as the "Warsaw," are scattered (Fig. 2) (18434 bytes) and are prolific oil producers in some areas of the basin. The widespread development of reservoir quality facies at depths ranging from 2,400-4,400 ft and the stratigraphic proximity of thermally mature New Albany shale, the primary Illinois basin source rock, are f...

Why Register?

Non-subscribers can only view whitepapers by providing name, home and email address, phone number and other information and comment on/rate articles.

Why Subscribe?

Oil & Gas Journal subscribers with login credentials can access these premium features of OGJ Online:

  • Current Issue – an html version of the current week's issue of Oil & Gas Journal.
  • Past Issues – An Electronic OGJ Archive. A keyword-searchable archive of all issues of Oil & Gas Journal dating back to 1990; also searchable by issue date.
  • Market Journal – a weekly round-up of the oil and gas markets, with observations from leading analysts.
  • Editor's Perspective – a short article of insight and opinion by the Editor of Oil & Gas Journal.
  • OGJ Industry Stats – quick access to current industry statistics from Oil & Gas Journal.
  • OGJ Survey Downloads - quick access to exclusive reports from Oil & Gas Journal.


Subscriber Help or Subscribe

Oil & Gas Journal Subscribers: Have your subscription number (from the mailing label on the cover of your Oil & Gas Journal) and e-mail address ready to set up your online account through Customer Service Assistant.

If you're not an Oil & Gas Journal subscriber, start a subscription and gain access to the subscriber areas of OGJ Online now.

Stay Connected