[thackney]

Hydraulic Fracturing is used in all types of formation, not just tight formation like shale.

Saudi Arabia has been using hydraulic fracturing for a while as they try to keep they production rate up and make it grow.

Saudi Aramco Makes Progress with Hydraulic Fracturing
http://www.spe.org/news/article/saudi-aramco-makes-progress-with-hydraulic-fracturing

[DuncanWaring]

Thanks for the info.

[SunkenCiv]

Thanks thackney:

1000s of bbl	2009	2013
United States	9130.08493	12342.5012
Saudi Arabia	9819.17231	11600.35468
Russia	9933.82661	10533.74244