"tight oil" is that obtained by fracking, right?
I thought non-OPEC production was driven by Russian, British and Norwegian concerns. I didn't know that US fracking had become so important.
Yes it is, although it is not all oil, but a lot of NGLs in the mix as the heavy ends of the gaseous phase makes up a lot of the production.
The article stands some clarification as well, as yes, the decline rates can be pretty steep, but only for newer wells. There is very little decline for wells that were placed on production years ago, which constitute the bulk of current 'tight oil' production.
That is one reason the production has remained stubbornly high for the unconventionals.