Chesapeake Oilfield Services

Chesapeake Oilfield Services (COS) is an integrated oilfield service company whose affiliates provide services and equipment primarily to Chesapeake Energy Corporation and its working interest partners as well as other leading customers in the upstream oil and natural gas industry in the U.S. From rental tools and fluid hauling to pressure pumping and contract drilling, COS is committed to delivering the highest-quality service in the industry. As an affiliate of Chesapeake, COS has access to world-class technology, resources and industry experience.