The State Oil Company of the Republic of Azerbaijan, largely known by its abbreviation SOCAR, is a fully state-owned national oil and gas company headquartered in Baku, Azerbaijan. The company produces oil and natural gas from onshore and offshore fields in the Azerbaijani segment of the Caspian Sea. It operates the country's only oil refinery, one gas processing plant and runs several oil and gas export pipelines throughout the country. It owns fuel filling station networks under the SOCAR brand in Azerbaijan, Turkey, Georgia, Ukraine, Romania, Switzerland, and Austria.