Appliacation of Comprehensive Prediction Technology for Thin Reservoirs in WS Uplift of Tarim Basin in Xinjiang
Neogene reservoir in WS uplift area of Tarim Basin characterizes with the thin thickness of single layer and the large lateral variation.The thickness of single sand body ranks between 2～10 m,the complex reservoir lithology,and the rapidly changes in thick-ness,the traditional seismic prediction techniques have limited dimensions and methods,re-sulting in insufficient prediction accuracy.In order to implement the distribution of reser-voirs and internal oil formations in Gidike formation in WS uplift area,based on the sensitive logging parameters of the reservoir and the distribution of well locations in the study area,this paper proposes sparse pulse inversion to figure out the horizontal overview of sand-Ⅰ,Ⅱ,Ⅲ member of Gidike formation and thinner longitudinal thickness of sand-Ⅲ member of Gidike formation in the southwest of the research area-Saike region,geostatistical inver-sion and natural gamma assisted simulation inversion for further prediction of single sand group or single sand body.By combining multiple data and inversion methods,the distribu-tion characteristics of the Gidike formation Ⅲ oil formation can be accurately distinguished and then oil and gas detection are conducted when the thickness of thinnest sand body is 2 m.The comprehensive application of reservoir prediction technologys has laid a solid foundation for meticulous characterization of thin reservoirs and the delineation of lithologic traps in WS uplift area of Tarim Basin,which effectively supports well location optimization.Good oil and gas shows in actual exploration well confirm that the inversion methods for reservoir pre-diction in WS uplift area of Tarim Basin are effective.
NETL
NSTL
万方数据
维普
