Operators increase stakes in Marcellus

Operators have rushed to add acreage, expand leaseholds, and submit applications to drill the Marcellus shale. This middle-Devonian-age black organic shale underlies New York, Pennsylvania, Ohio, Virginia, and Maryland (Fig. 1). Click here to enlarge imageDevonian shales in the Appalachians are the oldest gas play in the US.In 2007, 18% of all US wells were spud in Appalachia—3,134 gas wells. Much of the drilling activity in Appalachia crosses multiple pay zones and types, including coalbed methane.Shales are one-stop hydrocarbon shops, consisting of source, seal, trap, and reservoir. Shales have low permeability but shale gas wells generally have low decline rates, 2-3%/year, and ...

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