IP commercialization in energy sector

For a very narrow search (TITLE-ABST(((oil! or gas!) W/2 drill!)) and DATE(>=2013-09-23)) on the database TotalPatent from LexisNexis only within the most important authorities (offices) I received more than 1000 hits. There is a LOT activity of patenting in this field. Here is the TO5 6 countries:

China 759
US 85
WO 40
KR 29
EP 27
CA 24

Feel free to contact me with any questions you might have.