[PAR] [TLE] Compliant Tower [SEP] A compliant tower (CT) is a fixed rig structure normally used for the offshore production of oil or gas.  The rig consists of narrow, flexible ("compliant") towers and a piled foundation supporting a conventional deck for drilling and production operations.  Compliant towers are designed to sustain significant lateral deflections and forces, and are typically used in water depths ranging from 1,500 to 3,000 feet (450 to 900 m).  At present the deepest is the Chevron Petronius tower in waters 623m deep. [PAR] [TLE] Chevron Corporation [SEP] Chevron Corporation () is an American multinational energy corporation.  One of the successor companies of Standard Oil, it is headquartered in San Ramon, California, and active in more than 180 countries.  Chevron is engaged in every aspect of the oil, natural gas, and geothermal energy industries, including hydrocarbon exploration and production; refining, marketing and transport; chemicals manufacturing and sales; and power generation.  Chevron is one of the world's largest oil companies; as of 2014 , it ranked third in the Fortune 500 list of the top US closely held and public corporations and sixteenth on the Fortune Global 500 list of the top 500 corporations worldwide.  It was also one of the Seven Sisters that dominated the global petroleum industry from the mid-1940s to the 1970s.
[PAR] [TLE] Compliant Tower [ SEP ] A compliant tower ( CT ) is a fixed rig structure normally used for the offshore production of oil or gas . The rig consists of narrow , flexible ( " compliant " ) towers and a piled foundation supporting a conventional deck for drilling and production operations . Compliant towers are designed to sustain significant lateral deflections and forces , and are typically used in water depths ranging from 1,500 to 3,000 feet ( 450 to 900 m ) . At present the deepest is the Chevron Petronius tower in waters 623 m deep . [PAR] [TLE] Chevron Corporation [ SEP ] Chevron Corporation ( ) is an American multinational energy corporation . One of the successor companies of Standard Oil , it is headquartered in San Ramon , California , and active in more than 180 countries . Chevron is engaged in every aspect of the oil , natural gas , and geothermal energy industries , including hydrocarbon exploration and production ; refining , marketing and transport ; chemicals manufacturing and sales ; and power generation . Chevron is one of the world 's largest oil companies ; as of 2014 , it ranked third in the Fortune 500 list of the top US closely held and public corporations and sixteenth on the Fortune Global 500 list of the top 500 corporations worldwide . It was also one of the Seven Sisters that dominated the global petroleum industry from the mid-1940s to the 1970s .
What company headquartered in San Ramon, California and third in the Fortune 500 list of the top US closely held and public corporations, owns the Petronius tower?
What company headquartered in San Ramon , California and third in the Fortune 500 list of the top US closely held and public corporations , owns the Petronius tower ?
Chevron Corporation
Chevron Corporation