Through the analysis of petrology characteristics and individual well section of sedimentary facies of five core holes , direction of sedimentary source area , the depositional framework and main facies types and its features of penglaizhen formation , baimamiao - songhua area are elaborated on the basis of sedimentary backgroud of region . from this above , in view of the study of the correlation of 3 cross sections of sedimentary facies , it is pointed out that distribution regularities of sedimentary facies and possible places of distribution of sand bodies of iii , iv member of penglaizhen formation are vertically and laterally developed in baimamiao - songhua area . by the analysis and contrast of seven plans of sedimentary facies and nine isopach maps of sandstone , the planar characteristics of distribution of sedimentary facies are summarized , meanwile , macroscopic distribution regularities of sand bodies is studied in iii , iv member , penglaizhen formation of baimamiao - songhua area 通過5口取心井的巖石學(xué)特征、單井剖面相分析,結(jié)合區(qū)域沉積背景,闡述了研究區(qū)蓬萊鎮(zhèn)組的物源方向、沉積格局、主要沉積相類型及其特征;在此基礎(chǔ)上,通過3條連井剖面的沉積相對比研究,揭示了研究區(qū)蓬段、蓬段縱向與橫向上沉積相的分布規(guī)律及砂體的大體分布位置;通過7張沉積相平面圖、 9張砂巖等厚圖的分析對比,總結(jié)了蓬段、蓬段沉積相的平面分布特征,宏觀上研究了蓬段、蓬段的砂體展布規(guī)律。
Under the guidance of new principles and methods of sedimentology and reservoir sedimentology , this thesis takes jialingjiang formation in qianwei area as the main object of study . the petrology characteristics and sedimentary facies of nine basic wells have been studied exhaustively , from which it is deducted the depositional framework , and main types and characteristics of sedimentary facies in jialingjiang formation . then four types of sedimentary facies are recognized and their facies models are established 本論文以現(xiàn)代沉積學(xué)與儲層沉積學(xué)的新理論、新觀點、新方法為指導(dǎo),以犍為地區(qū)嘉陵江組為重點研究對象,通過9口基干井的單井巖石學(xué)特征、沉積相的分析,闡述了犍為地區(qū)嘉陵江組的沉積格局以及主要的沉積相類型與特征,識別出了四種不同類型的亞相,并分別建立了沉積相模式;在單井沉積相分析的基礎(chǔ)上,通過三條連井剖面沉積相的對比研究,闡明了犍為地區(qū)嘉陵江組沉積相的縱向與橫向發(fā)育規(guī)律。