The Western Daqing Oilfield Saertu, Fine Geological Description

At the late of highly containing water along with the oil-field development,theoutput drcaese more quickly,production rate lowers gradually.The inhomogeneity ofPI oil group is worse in the region of interest because of deposit characters gaveinfluence on plane and portrait. The hierarchical testing make know:the old wellpattern has bad adaptability on thin oil layer and out table container rock,controlingdrgee is low by water drive,so some oil layers were not developed or developedbadly.In order to increase the protuction rate,on the base of the geologic feature andmake the most of the information of core hole and geophysical well-logging,researchPI oil group inhomogeneity in the west of central area in Daqing oil field by themethod that macroscopic and tiny view of adoption combine together,begin with oilpool fine geologic research,make use of the method that moving and static statecombined together, many courses are comprehensive,research deposit micro faciesand the distribution characters of remaining oil from several aspects.These canprovide the basis of science for fine development and improving production rate.On the middle and last date of development, the space distribution of oilremaining turn into very complex on the result of static reasons deposit micro facies,micro structure and aeolotropism, dynamic reasons of injection-production pattern,injection-production ratio. In the research of fine reservoir description, fine geologicmodle can forecase the space distribution of oil remaining, we can put out goodmeasures, in order to direct the production of oil remaining on the last date ofdevelopment, combine with the forecast results of oil remaining by oil reservoirnumerical simulation.Discuss micro structure how to influence oil remaining and distributionmechanism, take the example of the center west in Daqing oilfield, discuss theinfluence of every micro structure combined mode took influence on oil remaining.Make the conclusion of : the top of micro structure and fault belt have more oilremaining, the positive micro structure make for oil and gas were collected.On the calculating foundation of quantity in the single well geology, connect therelation according to the well of water and oil well, the water well geological reserveskeeps to measure the allotment influence factor, carrying on the water well geologicalreserves to allot, carrying out to use the geological reserves to analyse. On the base ofelement which affect total production, take the interlayer interference intoconsideration, we found the distribution equation of total production, distribute thewell total production rationally to the effective sediment unit.