Qatar Petroleum is a state owned public company specializing in all aspects of petroleum and natural gas exploration and production.
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Black Ridge Oil & Gas Inc. is a development stage company which focuses on the exp...
Black Ridge Oil & Gas Inc. is a development sta...
Anglo American is engaged in the mining and natural resource sectors. Co. is a glo...
Anglo American is engaged in the mining and nat...
American Gas & Technology was formed to manufacture and put into service a unique ...
American Gas & Technology was formed to manufac...
ŤSurgutneftegasť Public Joint Stock Company is one of the largest private vertical...
ŤSurgutneftegasť Public Joint Stock Company is ...
Founded in 1969, PDC Energy is an independent exploration and production company f...
Founded in 1969, PDC Energy is an independent e...
We are an international owner of modern, fuel efficient âECOâ tanker vessels f...
We are an international owner of modern, fuel e...
Shell is an international energy company with expertise in the exploration, produc...
Shell is an international energy company with e...
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