Volume 21 Issue 4
Dec.  2015
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XIE Fei, WU Zhi-ping, YAN Shi-yong, et al., 2015. RESERVOIR-FORMING PATTERN OF THE SOUTH UPLIFT IN ENPING SAG. Journal of Geomechanics, 21 (4): 481-491.
Citation: XIE Fei, WU Zhi-ping, YAN Shi-yong, et al., 2015. RESERVOIR-FORMING PATTERN OF THE SOUTH UPLIFT IN ENPING SAG. Journal of Geomechanics, 21 (4): 481-491.

RESERVOIR-FORMING PATTERN OF THE SOUTH UPLIFT IN ENPING SAG

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  • Received: 2015-06-15
  • Published: 2015-12-28
  • The south uplift is the main hydrocarbon accumulation-forming zone of Enping sag. Using the basic data, we analyzed the conditions and characteristics of hydrocarbon accumulation in the south uplift and summarized the pattern of hydrocarbon accumulation. Hydrocarbon in the south uplift of Enping sag is mainly generated from the deep lacustrine source rock in Eocene Wenchang formation in the north EP17 sag. Although the south uplift lacks Wenchang formation deposits, there exists hydrocarbon favorable storage area. Hydrocarbon migrates mainly along the fractures which connect the favorable storage area. There are three patterns of hydrocarbon accumulation model:vertical migration along induced fracture zone of upper storage area and hanging wall, lateral migration along connected sand bodies, lateral sealing by gliding fracture zone, fault block reservoir; vertical migration along induced fracture zone of upper storage area and hanging wall, lateral migration along connected sand bodies, anticline reservoir trapped from other sources; vertical migration along induced fracture zone of upper storage area and footwall, lateral migration along connected sand bodies, lateral sealing by gliding fracture zone, fault nose reservoir.

     

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