Oil & Gas Geology ›› 2011, Vol. 32 ›› Issue (3): 368-374.doi: 10.11743/ogg20110308
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Abstract:By using sedimentary facies analysis method that unifies macroscopic geologic knowledge and microcopic geologic evidences,we conduct the analysis,interpretation and correlation of logging data and observation of cores more than 400 wells.It is thought that the sedimentary facies of the Paleozoic Taiyuan Formation in the Daniudi gas field is debris coastalcarbonate platform and delta in a regional epicontinental sea setting where delta distributary channel and tidal sand bar are deposited.The sedimentary facies of the 1st member of the Lower Shihezi Formation is lakebraided river delta in a paleostructuresedimentary background with high relief where distributary channel and interchannel microfacies are developed.These sedimentary facies and sand distribution features determine the worsening of reservoir quality and productivity of sandbodies in the 2nd member of the Taiyuan Formation from northeast to southwest.The plays with high production potential mainly occur in the northcentral part of NNEtrending sandbody in the study area.The chance is bad for them to occur in the 1st member of the Shihezi Formation in the study area.Plays with moderate production potential distribute in the northcentral part of the study area.
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URL: http://ogg.pepris.com/EN/10.11743/ogg20110308
http://ogg.pepris.com/EN/Y2011/V32/I3/368