Study On The Determining Stratified Water Injection Technology Policy And Method Of Xing Bei Development Zone

Xingbei development zone one~three in western areas, party a and party b block islocated in the northwest of Xingshugang structure, North up “Xing one zone” a row,South to“Xing three zone” rows of three、east to a211#,226#fault is bounded, the west by pu Ioil-bearing boundary in the group. Has the fault number, large flat extended length, faultdisplacement, complex fault cutting relation each other. This article selects the typical studyarea to block the use of conditions and the influence factors of water flooding effect analysis,and determined the technical adjustment countermeasures.This thesis through reservoir engineering methods, mathematical methods, numericalanalogue and so on. Combination of multidisciplinary study, Completed of “Xingbei”development zone for extra high aqueous phase stratified water injection technology policyand methods of research.1, through the establishment of conceptual model, analyse thefactors affecting water injection development effect, Including interwell heterogeneity,interlayer heterogeneity and injection-production pressure differential, connecting direction,injection-production well spacing, etc.;2, with cumulative injection pore volume multiplemeasures used as the condition of the important parameters, in combination with the practicalproduction data of blocks, on the degree of use of oil reservoir is evaluated;3, throughsimulation of geological structure in the study area, attribute model is established, thestratified water flooding numerical simulation in the study area, the production of oil andwater Wells to simulate the dynamic parameters, Precision meet the requirements, accordingto the results of numerical simulation, analyzes the using condition and remaining oilreservoir and distribution of remaining reserves;4, according to the uniform displacementprinciple, and gives out the quantitative criteria of apricot north development zone waterinjection structure adjustment, combined with the results of numerical simulation, determinethe classification well interval water injection allocation, and is verified using the numericalsimulation.through extra high aqueous phase "Xingbei" development zone the layered waterinjection technology policy and methods of research: High to low mining recovery rate ishigher than low injection mining recovery ratio; Reducing well spacing, increaseinjection-production pressure difference are conducive to improve development effect;Connected conditions influence on the development effect is bigger, lack water well is biggerthan missing the influence of the well; Type of oil reservoir with high water is given priorityto, well used; Three kinds of reservoir with low and medium water is given priority to, use ofconditions are relatively poor;89.3%of total water flooding control degree in study area, theoverall water flooding control degree is higher, but the multidirectional connected ratio isonly29.6%; Numerical simulation study, the longitudinal uneven layers use degree and theremaining oil on plane greatly influenced by sand body development and injection-productionrelationship; Using the “Logisitic” cycle model, the study area is calculated reasonableinjection-production ratio1.71; Forecast according to the layered water injection allocation inthe implementation of a scheme to improve oil recovery after water flooding by0.398%. Thedetermining of “Xngbei”development zone layered water injection technology policy andmethods of research, and establish to operational stronger and better adaptability fordetermining quantitative water injection structure adjustment time is technical standard, according to the reservoir potential water, improve water quality, control the productiondecline of water driving speed.