Fine Reservoir Description Of S611Fault Blockin Shengyang Oilifeld

The article studies the work area of Shen611, which is located in the borders of Fahaniu,Qianjin and Damintun of Xinmin city in Liaoning province. Its regional structural location isin the north of Rong Sheng Pu depression of Damintun sag, whose north border is Shen116fault, west adjacent area is Block Shen69, and east adjacent area is Jing An Pu oilfield.Reservoir rock type is mainly medium-fine arkose, with deeply weathered and poor reservoirphysical property. The oil reservoir belongs to typical low permeable deep seated reservoir.From its development in1996, the reservoir's development process has revealed distinctinterlayer interference because of obvious interlayer property difference and long interval,which gives reasons to deepening cognition of the reservoir, establishing fine3-D geologicalmodel, carrying out research on distribution of remaining oil and putting forward measuresfor tapping potential.On the basis of meticulous and quantitative reservoir geological research, starting fromgeology, logging, oil reservoir engineering and so on, the study proceed fine reservoirdescription research is unfolded with the centre of reconstructed geologic model. Ingeological aspect, guiding by sedmentology, using cycle contrast method namely "cycle as thebasis, controled by key bed, contrasting through three grades, subdivided by degrees",refinement single layer model containing seven groups of oil-bearing horizon and ninety-twosingle layers are established. According to lithofacies, paleontological and electrical marks,the type of sedimentary micro-facies and its developmental character is confirmed, theresearch on profile sedimentary micro-facies is carried out, and sedimentary micro-facies andsand body distribution law is further analyzed. And united the explanation result of logparameter, the reservoir3-D geological model is established including oil pool scale, sublayerscale, and single sand body scale.In the aspect of oil reservoir engineering, according to producing degree ofwaterflooding, control degree of waterflooding, economic critical pattern size and so on, theadaptability of block well network is evaluated. Through analyzed the relationship betweenwater cut and degree of reserve recovery, the relationship between water drive index andwater cut, and effectiveness of water injection etc., the block's development level iscomprehensively evaluated, the oilfield integrated model is established, the reserve curvefitting and production history fitting is accomplished, and then the distribution law ofremaining oil is studied. On the base of these, the concrete comprehensive adjustment anddisposition suggestions are advanced at last.