The Research Of The Reservior Geological Characteristic And Watehlood Development Plan In Block Sansheng JingBian Oilfield

For developing oil ifeld dynamically and elfficientlyjt is very necessary thatLow-permeability Reservoirs need waterflood development.at present,Yanchang groupLow-permeability Reservoirs in Ordos Basin have already been turned into waterlfooddevelopment time,so it is very important for studying Waterflood Development Plan.everyWaterlfood Development Plan can be not well without previous The Reservior GeologicalCharacteirstic studying.in order to aquire advantage criteiras and key principles for advancedplan,we must carry out these works,including analysis StratigraPhic Correlaiton anddivide,drawing Struetural and trapping Charaeteirsties,learning sedimentary system and sandbody morphology and Reservoir Characteirstic,what is more,checking out Reservoirs lfuidproperty and evaluationo of Reservoirs.Block SanSheng’JingBian Oilfield is located in south of jingbian county,which is mainproduction area. Chang6oil layer in Yanchang group of Tirassic system is main oil layer forproducting oil.this article researches Waterflood Development Plan of chang6Reservior inSanSheng though the new way that combined with Geological Characteirstic and reservoirengineering.There are several main innovations in this paper as follows: the SanSheng area Chang6ismainly a delta Plain sedimentary intrafacie; Chang6formation was fine sandstone withfeldsPathic sandston,also,little lithic arkose; intergranular corroded hollow is the main kind ofpore structure; lithologic deposit is main type of reservoir that controled by geologicalstructure partly in measure of particular reservoir cut plane analysis;it is erasonable thatcarrying out Waterflood Development for wake water sensitivity,no alkali sensitive, less wakespeed sensitive, middle salt sensitive that conclucd by reservoir sensitivity research; thegeological reserves is255.9x104t that calculated by volumetirc method;by reservoirengineeirng analysis and demonstration，this paper insist that the Chang6water displacementrecovery can irse to16.91%;using diamond anti-nine square well network,the well distance in450x150m.finally,this paper thinks that Waterlfood Development is better than natural energy.