Exxon Mobil is the largest oil company. It is also the world's largest company.
Halliburton's purchase of Dresser Industries made Halliburton the world's largest supplier of oil field services.
Clear Channel is the largest outdoor advertising services company, followed by Lamar and CBS.
Primerica Financial Services
The services that Schlumberger provide to oil and gas companies include well testing and directional drilling; well cementing and stimulation; flow assurance and consulting; and seismic acquisition and processing. Schlumberger is the world's largest oilfield services company.
Exxon Mobil
The largest oil company in the world is the Royal Dutch Shell with headquarters I the Netherlands and the United Kingdom. Their revenue was 484,489 million dollars.
The BJ Services Company was founded by Byron Jackson in 1872. It is now a subsidiary of Baker Hughes and is an oil and gas equipment and services company.
The British Petroleum(BP) who are responsible for the oil spill but they are still the biggest company regarding the oil spills.
It has the largest oil company
Portia Management Services is the largest port equipment supply company in the UK. Portia Management Services makes cargo equipment and is located in Liverpool UK.
Schlumberger Limited is the world's largest oilfield services company.
Forbes Energy Services is a company it Texas that provides services for oil and gas companies in Texas