Mis en ligne le 2012-04-16
- PetroChina Daqing Tamsag, Chinese invested company operating in three oilfields: Toson Uul – XIX, Tamsag – XXI, Buir – XXII
- Dongshen Gazryn Tos (Oil in Mongolian), Chinese invested company conducting exploration in two oilfields: Tsagaan els – XIII and some parts of Zuunbayan XIV or contracted field with No 1997
- Sheyman Resources Mongolia, Canadian invested company conducting exploration in oilfield: Nyalga – XVI
- China Golden Sea Petroleum, Chinese invested company conducting exploration in oilfield: Tariach – XV
- Petro Matad, registered at Cayman Island conducting exploration in oilfield: Matad – XX
- DWM Petroleum AG, Swiss invested company conducting exploration in oilfield: Tsagaan Els – XIII and Zuunbayan – XIV
- Zong Hen Yu Tang, Chinese invested company conducting exploration in oilfield: Galba – XI
- NPI, conducting exploration in oilfield: Khukh Nuur XXVIII
- Central Asian Petroleum Corp. Limited, company conducting exploration in oilfield: Bogd – IV, Ongi – V
- MCS Holding, Mongolian company conducting exploration in oilfield: Borzon – VII
- Sansar Geology Khaiguul LLC, Mongolian company conducting exploration in oilfield: Tukhum – X Khoid and Tsaidam – XXVI
- Magnai Trade, Mongolian company conducting exploration in oilfield: Bayantumen – XVII