There is lots of free information available online. I'm trying to filter through and post useful and relevant information, that Oil & Gas professionals can actually use in real life.
Schlumberger has an online dictionary that is extremely comprehensive, but it is difficult to use, and far too technical for many users.
This particular oil & gas dictionary keeps it mostly simple and non-technical, and also provides many difficult-to-google acronyms.
Hats off to Alpha Thames for making this useful information available freely online.
Here is the Schlumberger glossary. Extensive, but clunky, and not at all user-friendly:
[http://www.glossary.oilfield.slb.com/|leo://plh/http%3A*3*3www%2Eglossary%2Eoilfield%2Eslb%2Ecom*3/M4aD?_t=tracking_disc]