Someone might not know about how to translate all articles in driling formulas.com into any languages.
Please following the simple guideline.
1. At the side bar, there is one box called translation containing many flags.
2. Click at the language that you want the program to translate for you. For this example, I click the Germany flag to translate all articles into German.
3. You will see that drillingformulas.com is translated into German.
The translation is done by google translation which is the best translator program. It will help you understand more about the content in the website. However, since it is an oilfield articles, the translation program may not 100% accurate. Anyway, I am sure that it will help you out.