AlMansoori Petroleum Services, a subsidiary of UAE-based AlMansoori Specialized Engineering, has signed a joint venture agreement with US-based onshore energy production services company Key Energy Services. The joint venture will see the Houston-headquartered firm establish a base in the Middle East for the first time, adding new services to AlMansoori's capabilities in coil tubing, workover rigs, pumping/cementing, fracturing and acidizing.