ɪn tˈuː θˈaʊzənd fˈaɪv, ðə kˈʌmpəni sˈoʊld ɪts mɔŋɡˈoʊliən ˈæsɛts tə pˈɛtɹoʊ tʃˈaɪnə sʌbsˈɪdjɚɹi, dˈeɪkɪŋ ˈɔɪlfiːld lˈɪmɪɾᵻd kˈʌmpəni.
In 2005, the company sold its Mongolian assets to PetroChina Subsidiary, Daqing Oilfield Limited Company.