The funnel follows a photograph of Viet Gas.
PTSC Marine is dated to 1999. Its operating company Petroleum Technical Services arose in 1993 from Petroleum Service, formed in 1986, and Geophysical & Petroleum Technical Services. The latter is dated to 1989 with origins in Geophysical Group No. 36 in 1976; another Lloyd’s account instead gives formation in 1992 and a 1993 name change. Oil & Gas Co. (1) merged with PTSC in 1994. The name became Petroleum Technical Services Corporation in 2008.
Keep the explicit scope label independent; no alias or company identity is inferred.