Try these:
http://www.find-mba.com/university/77/university-of-dundee-centre-for-enterprise-management
http://www.find-mba.com/university/1484/university-of-alberta-school-of-business
http://www.find-mba.com/university/1485/university-of-calgary-haskayne-school-of-business
http://www.find-mba.com/university/307/university-of-texas-at-austin-mccombs-school-of-business (http://mba.mccombs.utexas.edu/students/academics/special/specfief.asp)
There may be more, esp. in the US

BTW Thunderbird has a very focused non-degree program for Gas and Oil managers: http://www.thunderbird.edu/prospective_students/mgmt_nondegree/amp_oil_gas/index.htm

"Most participants are senior-level managers who have 10 or more years of experience in management roles, have spent the majority of their careers in the energy industry, and currently manage a business unit, division or subsidiary. Participants are drawn from both domestic and international firms; national, private, and public companies; and a variety of functional areas. Reflecting the global nature of this industry, participation by non-U.S. managers is about 50% of any given program. This diversity adds a valuable dimension to the program."

Not sure whether that is right for you...

Here's a good article about Energy MBA programs: http://www.find-mba.com/article/314/can-an-mba-spark-a-career-in-the-energy-industry