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Hydrocarbon accumulation and exploration prospect of mound-shoal complexes on the platform margin of the fourth member of Sinian Dengying Formation in the east of Mianzhu-Changning intracratonic rift, Sichuan Basin, SW China
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YANG Wei,WEI Guoqi,XIE Wuren,JIN Hui,ZENG Fuying,SU Nan,SUN Ai,MA Shiyu,SHEN Juehong,WU Saijun
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Table 1 The comparison of the mound-shoal complex gas reservoirs in the platform margin of Z2dn4 in Gaoshiti and Moxi areas.
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Gas re-
servoir | Relative density
of gas | Components of gas/% | | Gas reservoir characteristics | | Methane | Ethane | Propane | Nitrogen | Carbon dioxide | Helium | Hydrogen sulfide | | Pressure
coefficient | Converted pressure/MPa | Gas-water contact/m | | Gaoshiti | 0.62 | 92.11 | 0.04 | 0 | 0.57 | 6.19 | 0.03 | 1.06 | | 1.13 | 56.8 | | | Moxi | 0.61 | 92.26 | 0.09 | 0.005 | 1.13 | 4.91 | 0.02 | 1.49 | | 1.14 | 58.6 | -5,230 |
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