Shell Oman Marketing Company
CNPC-China National Petroleum Corporation
Galfar Engineering & Contracting Saog
Duqm Refinery
Halliburton
Hilong Group of Companies (Hilong Holding Limited)
Khimji Ramdas
McDermott
Port of Duqm
SOHAR Port and Freezone
Port of Salalah
Sarooj Construction Company -SCC
SLB
daleel petroleum
Medco LLC
great wall drilling company
Shaleem Petroleum Company SAOC