AOS Orwell Limited (AOSO) is an indigenous Oil Servicing Company engaged in the business of Well Construction, Welding Fabrication and Machining, Process Automation and Conductor Casing & OCTG Manufacturing across sub Saharan Africa. Formed in 2011 as a result of a merger between Africa Oilfield Services (AOS) and Orwell International Limited, the company has grown her capacity to offering numerous products and services.

With the advent of the Nigerian Content initiative, AOSO has recorded unrivalled local content success by being the first Nigerian company to locally assembly PDC Drill bits in 2010, establish the first Fishing training school in 2010; open the first HE/NOV drilling jar certified service shop in 2011; own the largest indigenous conductor casing and welding fabrication shop in 2012; build the first instrumentation cabinet assembly plant in 2013; launched her Valve repair and maintenance center in 2014 and first metering skid facility in 2015.