C.A.T. oil AG (CAT oil) is an oil and gas field services group. The company is principally engaged in providing oilfield services to various oil and gas companies. The group consists of, the parent company, C.A.T. oil AG, two wholly owned operating subsidiaries, and two auxiliary subsidiaries. C.A.T. oil AG is an Australian holding company. The group provides services for efficient development and extraction of existing and new oil and gas reserves. The services offered by the group include, hydraulic fracturing, sidetrack drilling, coiled tubing, workover & remedial cementing and geotechnical services. CAT oil principally operates in Russia and Kazakhstan. CAT oil is headquartered in Wien, Austria.