Formation mineral content key to successful sandstone acidizing

08/30/1999
To improve the success of sandstone-acidizing, operators must know the mineral content of producing formations. Otherwise, they may encounter problems with clay swelling, fines migration, gel formation, and precipitation.Both laboratory research and field examples show the need to tailor treatments to formation minerals.Ion exchange, clay swellingIon exchange occurs between formation minerals (usually clays) and injected brines. Sodium ions are often attached to these clays, but these ions can become exchanged with ions of the injected fluid. Click here to enlarge imageWhen ion exchange occurs, the clays convert the injected fluids to salt water of the corresponding concentrations. For e...
read-story

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