Font Size: a A A

Research On Water Injection Development Program In Yao229Well Area Of Yaodian Oil Field

Posted on:2015-11-10Degree:MasterType:Thesis
Country:ChinaCandidate:X F GaoFull Text:PDF
GTID:2180330422485723Subject:Geological engineering
Abstract/Summary:PDF Full Text Request
Under the guidance of reservoir sedimentology, logging geology, petroleum geology and oil field geology,using the drilling,logging data, core analysis reports and other information properties in the study area,conducting stratigraphic division and correlation, distribution law sedimentary facies and reservoir sand bodies,reservoir characteristics and heterogeneity of research in Yanchang Oilfield Yaodian6oilstra Combined production performance data of the study area, analyzes and summarizes theremaining oil distribution in the study area.The following results were obtained through the study and understanding:(1) Deviding the main reservoir of229well area as Chang61、Chang62、Chang63、Chang64four small layers.Through the vertical distribution of the oil sands,the oil layer is mainly concentrated in the Chang61formations,and partly developed in Chang62,Chang63,and no oil stored in Chang64.(2) Chang6oillayer developed in the two facies of delta plain and delta front in stufy area, The Chang6is mainly delta plain,the Chang62,Chang63and Chang64are mainly mainly delta front,Microfacies mainly developed underwater distributary channel and measuring edge.(3) The reservoir sandstones of Yaodian Chang6oil layer reservoir sandstones are typical feldspathic sandstone, The diagenesis including compaction and pressure solution, cementation, metasomatism,dissolution and other types.(4) The reservoir pore types Yaodian oilfield Chang6layers are intergranular pore, intergranular dissolution times for the tablets dissolved pores and holes; Reservoir is weak velocity ensitivity; Weak sensitive, critical salinity of less than2500mg/L; Moderate to strong-strong acid-sensitive; weak base Min.(5) Chang6reservoir of Yao229wellsarea is constructed-lithologic reservoir, Water distribution mainly controlled by lithology and physical roperties, which is constructed-dual control composite reservoir lithology formation.(6) the229oil wells area of Yaodian oil field belongs to low porosity and low permeabilityreservoirs, low pressure reservoir; Reservoir type is typical of lithologic reservoir, gravity-driven, Natural energy is mainly the elastic drived and solution gas drived.(7) Through comparative analysis, determine the oilfield waterflood development plan229well area of Yaodian oil field as follow:Using irregular inverted ine injectionwells area network, through improving waterpressure deficit environment, driving the remaining oil, and through local infill, fill holes, dig remaining oil potential, by repeatedly fracturing.
Keywords/Search Tags:sedimentary facies, reservoir assessment, water-flooding, Yaodianoilfield
PDF Full Text Request
Related items