'Big Foot' Chevron's Deep Ocean Platform departs from Kiewit from Ingleside, oil & natural gas drill rig at dawn, early morning light, departed Ingleside 4 am January 30, 2018, tugboats guiding. Corpus Christi Ship Channel. Patricio County, One of Chevron's major capital pojects in the deepwater U.S. Gulf Of Mexico. Once in position the extended tension-leg platform will be located 225 miles south of New Orleans, Louisiana, in Walker Ridge Block 29, will rest in water depth of approx. 5,200 feet, San Patricio County, Gulf Of Mexico, Texas, United States.