Looking to do MBA in Oil & Gas to boost my career to next managerial positions. I have 14 Years of Oil & Gas Experience.
Worked out some Colleges in UK (University of Aberdeen, RGU & EBS) but really confused which college to opt for.
The main problem is the placement cell of these colleges are not mentioned anywhere on the links available.
Please help to choose the best.

I don't think MBAs without meaningful international accreditation, like Aberdeen or Heriot Watt, make any serious claims to be able to place students in the UK. Freshers MBAs are generally for students returning home. The schools with the best placement into oil and gas will be will best MBAs overall, rather than the specialised ones. RGU is a very rare example of a specialized MBA that is taken seriously by UK employers. 

Yeah, RGU is probably the only one of this list that I would really consider. Also: since you already have proven experience in the sector, it's worth considering whether or not you'd even need to do a specialized program (compared to a better-ranked, non-specialized program.) 

For example, if you were to study in the MBA at, say, Warwick, you'd come back with a very solid network, both in the energy sector and elsewhere, plus great career support and verifiable employment outcomes.