The Overall Fracturing Design Of Oulituo Low Permeability Blocks In Liaohe Oil Field

Oulituozi structure is located in the eastern sag in Liaohe depression in the middle, southof Rehe oil field, the north and the Huangshatuo oilfield is on the east of Qianshan, threebubble, West to Sandy Bay is bounded to fault, construction area of about40squarekilometers. Low permeability oilfield development is to restrict the main difficulties.As Ollie in oil reservoir lithology is divided into gravel and rock facies volcano,including block, layered and layered three, decided the oilfield fracturing technology and thecorresponding parameters of complexity. Different lithology and different reservoir fracturingand fracturing fluid selection as well as the corresponding fracturing technology parameterson fracturing prior to optimization design, for limestone reservoir acid fracturing measuresshould be considered at the same time.Typically, general fracturing construction is relatively simple, but for layered reservoirsmainly oil field, should be stratified fracturing construction, so the technical limitation of therange of application and thinking of selecting layer and its combination of adaptabilityproblem. The same type of reservoir in oil reservoir properties differences, includingmeasures of reservoir thickness, porosity, permeability, shale content, well control reservesabundance before fracturing, oil well productivity, resulting in the same block, the samehorizon production well fracturing effect difference is big, therefore need to sum up theprevious fracturing success of single well case, find out successful case of implied by thesuitable reservoir parameters or parameter combination, form repeat fracturing well andreservoir parameters reasonable value.Using the integral fracturing can realize efficient development, modern tectonic stressfield in the reservoir on the basis of the study, optimizing fracturing scale and parameter,construction procedure for fracturing, fracturing proppant, supervision and production systemoptimization design, selection of injection wells corresponding and formation pressure tomaintain a high priority for fracturing wells and layers, by overall fracturing in lowpermeability reservoir.