TAQA North Ltd., Calgary, formerly known as Northrock Resources Ltd. and a subsidiary of Abu Dhabi National Energy Co. PJSC, Abu Dhabi, UAE, (Abu Dhabi: TAQ) plans to acquire Calgary-based royalty trust PrimeWest Energy Trust (Toronto, NYSE: PWI) for C$5 billion. PrimeWest is focused in the Western Canada Sedimentary Basin and Montana, North Dakota and Wyoming. Assets include 285 million barrels gross proved reserves with production of 61,000 barrels of oil equivalent per day and 1.1 million net acres of undeveloped land.