The Detailed Reservoir Description Of Bamiantai In Jilin Oilfield

This project aims at Bamiantai of qingshankou formation and four small oil layercomplex oil-water relationship, not conducive to the understanding of the oil-waterrelationship inside layer, reserves calculation precision is poor, lead to production decline rateis large, without anhydrous production period, formation pressure drop quickly, reservoirenergy supply not in time, less water is serious, poor development effect, low recoveryefficiency problem restricting the next step to improve development effect of adjustment ofdeployment.This paper mainly studies the distribution rules of single sand subdivision, correlationand oil sand, reservoir sedimentary facies, well logging interpretation, reserve calculation,static three-dimensional geological model, the measures for improving development effects ofthese six aspectsThrough a lot of drilling, logging, geology, and dynamic analysis of test data, using theRock core, electrical and depositional model, in contrast, single sand layer subdivision, singlesand layer to implement the small boundary layer, according to the layer, interlayer insulationdistribution in single sand layer. Comparison of cycle, four contrast mode, the comparisonresults show that the poor continuity of fuyu oil layer of single sand layer, a mud pack sandstructure; High counter reservoir continuity is good, single sand layer on positive mutualcascade structure. Single sand layer from south to north, continuity, cut the number from thewest to the east sand layers, and pointed out the step by step. Through sand body planestablishment and analysis of reservoir characteristics, most of the sand body and its reservesof the poor physical properties, belongs to low porosity, very low porosity, low permeability,micro seepage field. So the development is difficult. Sedimentary microfacies in the reservoirand the distribution pattern was used to study, still points to the eight sides field mappingrespectively, three blocks basic figure out within the oil reservoir characteristics andsedimentary structure, sedimentary origin has important guiding significance to the next stepdevelopment adjustment work. Interpretation model is established, oil and water layer, thequalitative and quantitative analysis, and interpretation based on core analysis data toestablish reservoir parameter interpretation model, the hierarchical explanation andcalculation, to provide as much as possible to calculate geological reserves of reservoirproperty parameters. Through double calculation, to carry out the oil and water, dry oil line,to measure the oil-bearing area and to calculate geological reserves, provide basis for theoilfield development adjustment next.3d static geologic modeling work and so on, through the synthesis of fine reservoir description, solved the reservoir on the understanding of theproblems such as oil and water distribution rule and contradiction, under the guidance of steppotential for deployment and development.According to the eight Taiwan oilfield reservoir description results of encryption, eightTaiwan area wells are wells net improvement, subdivision of series of strata of the threeadjustment.