Evaluation and Prediction of Favorable Reservoirs in Source-to-Sink Systems of the Palaeogene, Shaleitian Uplift
Li Shunli
Zhu Xiaomin
Liu Qianghu
Xu Changgui
Du Xiaofeng
Li Huiyong
Abstract：The Shaleitian uplift and its surrounding areas in the Bohai bay basin constitute a typical Source-to-Sink (S2S) system in terrestrial rift basin.Based on the data of drilling,seismic,core,and reservoir analysis,this paper illustrates element characteristics of S2S systems in the Shaleitian uplift and its surrounding areas.The S2S systems are classified into four types,namely,faulted-steep-slope,faulted-gentle-slope,gentle-slope,and faulted-trough.Different S2S systems controlled various depositional systems,and subsequently influenced their reservoir diagenesis and properties.Research results indicate that reservoir development in sags around the Shaleitian uplift was influenced both by element coupling of the S2S systems and diagenesis.The faulted-gentle-slope was characterized by high elevation of source rocks and catchment area,which developed large scale of depositional systems and sandbodies along the fault break zones.The sandstone in this kind of S2S systems was high quality reservoirs with high maturity of component and texture,shallow buried depth,weak mechanical compaction,and abundant secondary porosity.However,other S2S systems including faulted-steep-slope,gentle-slope,and faulted-trough developed less high quality reservoirs.
Keywords：source-to-sink systemdiagenesisreservoir classificationShaleitian upliftpetroleum geologysedimentary
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：16( 1994-2009 )