發(fā)布時間：2018-04-17 05:13

  本文選題：準噶爾盆地 + 阜北地區(qū)　； 參考：《成都理工大學(xué)》2017年碩士論文

【摘要】：論文結(jié)合前人研究和成果認識的基礎(chǔ)上,綜合利用巖石普通薄片、鑄體薄片、掃描電鏡、物性、測井及地震等一系列分析手段,通過對阜北地區(qū)頭屯河組沉積相、儲層巖石學(xué)、孔隙類型、物性特征和成巖作用等的綜合研究認為:(1)阜北地區(qū)頭屯河組儲層屬于辮狀河三角洲沉積,其中三角洲前緣水下分流河道、河口壩及三角洲平原分流河道是儲集砂體發(fā)育的有利微相帶;儲集砂巖類型以長石巖屑砂巖為主,其次為巖屑砂巖,儲集空間主要為剩余粒間孔,次生孔隙相對不發(fā)育,孔滲相關(guān)性較好,屬于中孔-中低滲細吼型儲層。(2)頭屯河組主要的成巖作用有機械壓實、膠結(jié)、溶蝕及自生粘土礦物沉淀等。根據(jù)泥巖的鏡煤反射率、砂巖壓實程度、碎屑顆粒接觸關(guān)系、孔隙類型及自生礦物的發(fā)育程度及其類型分析認為研究區(qū)頭屯河組處于早成巖階段B期和中成巖階段A期。(3)將阜北地區(qū)頭屯河組劃分為弱壓實成巖相、弱壓實-綠泥石膠結(jié)成巖相、中等壓實成巖相3種成巖相類型,有利儲層發(fā)育的成巖相為弱壓實-綠泥石膠結(jié)成巖相。(4)沉積微相是控制儲層發(fā)育的首要因素,其中分流河道和水下分流河道砂體為最有利的儲集砂體類型,也控制了碎屑組分的類型;在后期的埋藏成巖過程中,粘土礦物包膜(特別是自生綠泥石)保存了頭屯河組大量的原生粒間孔隙,對儲層發(fā)育十分有利。因此,沉積微相、粘土礦物包膜是有利頭屯河組儲層發(fā)育的主控因素。
[Abstract]:On the basis of previous studies and achievements, the paper synthetically utilizes a series of analysis methods, such as ordinary rock sheet, cast thin plate, scanning electron microscope, physical property, logging and seismic, through the sedimentary facies and reservoir petrology of the Toutunhe formation in Fubei area.A comprehensive study of pore types, physical properties and diagenesis suggests that the reservoirs of the Toutunhe formation in Fubei area belong to braided river delta deposits, in which the delta front underwater distributary channel,Estuarine bar and delta plain distributary channel are favorable microfacies zone for the development of reservoir sand body, the reservoir sandstone type is mainly feldspathic sandstone, followed by lithic sandstone, the reservoir space is mainly residual intergranular pore, secondary pore is relatively undeveloped.The correlation of porosity and permeability is good, which belongs to medium porosity and low permeability fine roaring reservoir. The main diagenesis of Toutunhe formation is mechanical compaction, cementation, dissolution and authigenic clay mineral precipitation.According to the mirror coal reflectance of mudstone, the compaction degree of sandstone, the contact relation of clastic grain,The pore type and the development degree of authigenic minerals and their types indicate that the Toutunhe formation in the study area is in the early diagenetic stage B and the middle diagenetic stage A, and is divided into weakly compacted diagenetic facies.The lithofacies formed by weak compact-chlorite gel and the diagenetic facies of medium compaction are three diagenetic facies. The diagenetic facies favorable for reservoir development is weakly compact-chlorite cement-forming lithofacies. 4) sedimentary microfacies are the primary factors controlling reservoir development.Among them, distributary channel and underwater distributary channel sand body are the most favorable types of reservoir sand bodies, which also control the types of clastic components.Clay mineral coating (especially authigenic chlorite) preserves a large number of primary intergranular pores in Toutunhe formation, which is beneficial to reservoir development.Therefore, sedimentary microfacies and clay mineral coating are the main controlling factors for reservoir development of Toutunhe formation.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13

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本文編號：1762215