NGL Pipelines & Services: 19,400 miles (31,200 km) of natural gas liquids pipelines[9] Onshore Natural Gas Pipelines & Services: 19,600 miles (31,500 km) of natural gas pipelines[9] Onshore Crude Oil Pipelines & Services: 4,600 miles (7,400 km) of onshore crude oil pipelines[9] Offshore Pipelines & Services: 2,300 miles (3,700 km) of Gulf of Mexico natural gas and crude oil pipelines[9]