The dating and temperature measurement technologies for carbonate minerals and their application in hydrocarbon accumulation research in the paleo-uplift in central Sichuan Basin, SW China

SHEN Anjiang,ZHAO Wenzhi,HU Anping,WANG Hui,LIANG Feng,WANG Yongsheng

Table 1. Temperatures of the clumped isotopes (Δ47) in host minerals containing hydrocarbon inclusions in the Dengying Formation.

Host mineral Sample No. Sample source Sample feature Δ47 Temperature/°C Fine-medium crystalline dolomite B1 Deng 4 Member in Well Gaoshi 1 Sporadic distribution of liquid hydrocarbon inclusions 0.532 782 99.02 B2 Deng 2 Member on Xianfeng section Rich in liquid hydrocarbon inclusions 0.527 565 102.43 B3 Deng 2 Member on Yangba section Synchronous cement 0.536 936 96.37 B4 Deng 2 Member on Xianfeng section Sporadic distribution of liquid hydrocarbon inclusions 0.556 642 83.97 B5 Deng 2 Member in Well Gaoshi 6 Rich in liquid hydrocarbon inclusions 0.503 689 119.91 B6 Deng 2 Member on Gucheng section Rich in liquid hydrocarbon inclusions 0.504 994 118.89 Coarse crystalline dolomite B7 Deng 2 Member in Well Moxi 22 Rich in liquid hydrocarbon inclusions 0.523 954 104.92 B9 Deng 2 Member on Xianfeng section Synchronous cement 0.511 229 113.74 B10 Deng 2 Member on Gucheng section Synchronous cement 0.481 297 138.75 B8 Deng 4 Member in Well Gaoshi 1 Rich in liquid hydrocarbon inclusions 0.517 159 109.75 B11 Deng 2 Member in Well Moxi 9 Rich in gaseous hydrocarbon inclusions 0.439 681 178.97 Saddle-shaped dolomite B12 Deng 2 Member on Yangba section Rich in gaseous hydrocarbon inclusions 0.423 188 203.99 B13 Deng 2 Member on Gucheng section Rich in gaseous hydrocarbon inclusions 0.412 498 219.74