![]() Black Sea Oil & Gas Black Sea Oil & Gas is a company, targeting exploration and development of conventional oil and gas resources. | ![]() Callon Petroleum Company Callon Petroleum Company, an independent oil and natural gas company, acquires, explores for, develops, and produces oil and natural gas properties in the Permian Basin in West Texas. | Polyard Petroleum International Group Polyard Petroleum International Group (formerly known as Kanstar Environmental Paper Products Holdings) (PPIG) is a company that provides oil and gas exploration and development services. | ![]() Petro-king Oilfield Services Petro-King Oilfield Services (formerly known as Termbray Petro-king Oilfield Services) is an investment holding company that operates through its subsidiaries that provides oil and gas exploration and development services. | MITSUI E&P USA MITSUI E&P USA is a company that provides oil and gas exploration and development services. | |
Founding Date | Founding Date 2015 | Founding Date 1950 | Founding Date 2002 | Founding Date 2002 | Founding Date 2011 |
Type | Type Subsidiary | Type Public | Type Public | Type Public | Type Subsidiary |
Tags | |||||
Locations | Locations București, RO HQ Constanța, RO | Locations Houston, US HQ Houston, US Midland, US Natchez, US | Locations Hong Kong, HK HQ | Locations Shenzhen Shi, CN HQ Dubai, AE | Locations Houston, US HQ |
Employees | Employees 1082% decrease | Employees 475118% increase | Employees 16 | Employees 195 | Employees 142 |
Financial | |||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) $2.3b (FY, 2023) | Revenue (est.) N/A | Revenue (est.) $267.9m (FY, 2025) | Revenue (est.) N/A |
Net income | Net income N/A | Net income $401.2m (FY, 2023) | Net income N/A | Net income $22.9m (FY, 2025) | Net income N/A |

Callon Petroleum Company, an independent oil and natural gas company, acquires, explores for, develops, and produces oil and natural gas properties in the Permian Basin in West Texas.
View companyPolyard Petroleum International Group (formerly known as Kanstar Environmental Paper Products Holdings) (PPIG) is a company that provides oil and gas exploration and development services.
View company
Petro-King Oilfield Services (formerly known as Termbray Petro-king Oilfield Services) is an investment holding company that operates through its subsidiaries that provides oil and gas exploration and development services.
View companyMITSUI E&P USA is a company that provides oil and gas exploration and development services.
View company