Evolution of Ordovician YJ1X ultra-deep oil reservoir in the Yuecan oilfield, Tarim Basin, NW China |
YANG Peng,LIU Keyu,LI Zhen,MCINNES Brent Ian Alexander,LIU Jianliang |
Fig. 4. Triangular plot of the relative proportions of C27-C29 regular steranes for the reservoir oil, free oils and inclusion oils. |
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