【摘要】：大安油田區(qū)域構(gòu)造位置位于松遼盆地南部中央坳陷區(qū)大安紅崗階地二級(jí)構(gòu)造帶中,研究區(qū)位于紅崗—大安階地上的最深洼槽軸線上,東鄰大安凹陷。研究區(qū)的主要目的層位是扶余油層泉四段,主要的沉積背景是河控三角洲沉積。本論文對(duì)大安油田扶余油層的巖石學(xué)特征、巖相特征、物性特征以及特殊組分特征進(jìn)行了分析,并對(duì)次生孔隙的形成機(jī)理進(jìn)行了深入探究。大安油田扶余油層是典型的細(xì)、粉細(xì)砂巖超低滲—致密儲(chǔ)層,微觀孔喉結(jié)構(gòu)對(duì)儲(chǔ)層的物性與含油性有關(guān)鍵性影響。研究區(qū)儲(chǔ)層物性總體特征表現(xiàn)為:儲(chǔ)層物性較差,主要為特低孔-超低孔、超低滲-致密儲(chǔ)層。按孔隙直徑將孔隙類型分為三種:毫米級(jí)、微米級(jí)和納米級(jí)孔隙,掃描電鏡和壓汞資料表明研究區(qū)孔隙類型以微納米級(jí)孔喉為主。最后依據(jù)超低滲—致密砂巖微觀孔隙結(jié)構(gòu)表征技術(shù)確定了納微米級(jí)孔隙的類型和特征,以及納微米級(jí)孔隙結(jié)構(gòu)參數(shù)表征。根據(jù)壓汞資料將研究區(qū)儲(chǔ)層物性分為三大類四亞類,即Ⅰ類、Ⅱ類及Ⅲ類,并把Ⅱ類細(xì)分為Ⅱa和Ⅱb兩個(gè)亞類,建立了各類儲(chǔ)層的分類標(biāo)準(zhǔn)。
[Abstract]:The regional structural position of Da'an Oilfield is located in the secondary structural belt of Da'an Honggang terrace in the central depression area of southern Songliao Basin. The study area is located on the axis of the deepest trough on the ground of Honggang Da'an stage and adjacent to Da'an depression in the east. The main purpose horizon of the study area is the fourth member of Fuyu Reservoir Quan, and the main sedimentary background is river-controlled Delta deposition. In this paper, the petrological characteristics, petrographic characteristics, physical properties and special component characteristics of Fuyu reservoir in Da'an Oilfield are analyzed, and the formation mechanism of secondary pores is deeply explored. Fuyu reservoir in Da'an Oilfield is a typical fine and siltstone ultra-low permeability and tight reservoir. The microscopic pore throat structure has an effect on the bond between physical properties and oil content of the reservoir. The overall characteristics of reservoir physical properties in the study area are as follows: the reservoir physical properties are poor, mainly ultra-low porosity-ultra-low porosity, ultra-low permeability-tight reservoir. According to the pore diameter, the pore types are divided into three types: millimeter, micron and nanometer pores. Scanning electron microscope and mercury injection data show that the pore types in the study area are mainly micro and nano pore throat. Finally, according to the microscopic pore structure characterization technique of ultra-low permeability tight sandstone, the types and characteristics of nano-micron pores and the characterization of nano-micron pore structure parameters are determined. According to the mercury injection data, the reservoir physical properties in the study area are divided into three categories and four subcategories, namely, class 鈪，

本文編號(hào)：2473511