FOS Energy LLC began as ‘Fahud Oilfield Services’ in 1999 when an initiative of His Majesty’s Government encouraged the development of Omani owned companies in the well services sector. The shareholders of FOS chose Halliburton Worldwide Ltd. as its alliance partner. The Technical Services Agreement was signed in early 2000.

 The commencement of a major PDO Pumping Services contract in 2000 by Halliburton and its partner FOS was cited as an 'innovative solution to meet the needs of the Oman Government' and a landmark in the development of independent, wholly Omani-owned well service companies.

 In the years of incubation from 2000 to 2003, FOS worked in a unique relationship with Halliburton, by providing well site services of highest international standards while developing its own strengths as a local company. During this period, FOS decided to diversify into other areas of oilfield service activities. Success swiftly followed when FOS was awarded the PDO Drill Stem Testing contract in 2001 and a PDO Exploration Well Testing contract in early 2002.

 After only four years' operation , FOS had reached a sufficient level of maturity and confidence to initiate a restructuring of its business model. The acquisition of the Halliburton well testing business in Oman established Fahud Oilfield Services as a 100 per cent Omani owned stand-alone business.

 FOS completed a successful seven-year well testing contract with PDO in August 2009 and maintained a zero LTI safety record throughout. Hence, another five-year well testing contract with increased scope of services was awarded by PDO to FOS in September 2009.

 As a part of further business restructuring, FOS changed its name from Fahud Oilfield Services to FOS Energy Limited in May 2010.

 In June 2010 , FOS Energy was named as the exclusive distributor and business partner in Oman of Pason Systems Corporation of Canada and now offers real time internet rig monitoring and data acquisition systems.