本文選題：二郎廟　切入點(diǎn)：石英砂巖　出處：《成都理工大學(xué)》2015年碩士論文

【摘要】：四川盆地位于西南地區(qū),是我國(guó)最重要的含油氣盆地之一,二郎廟地區(qū)位于四川盆地西北緣龍門山構(gòu)造帶北段南側(cè)的江油市境內(nèi),構(gòu)造上與礦山梁—天井山—二郎廟沖斷背斜帶疊置。在十幾年的勘探實(shí)踐中在龍門山構(gòu)造帶北段已發(fā)現(xiàn)多套含油砂巖,如分布于江油-廣元地區(qū)的沙溪廟組油砂巖,具有露頭油苗分布廣、油氣顯示好和資源量大等特點(diǎn),早在20世紀(jì)50年代便開始對(duì)該地區(qū)油砂資源進(jìn)行地表調(diào)查和專題研究,已鉆的9口淺井中有一口井在91m處鉆獲27m厚的油砂,含油量較高,顯示出較為豐富的資源儲(chǔ)量和良好的勘探前景。而近期在龍門山北段天井山構(gòu)造帶新發(fā)現(xiàn)的泥盆系油砂古油藏,更加增添了對(duì)龍門山北段油砂礦產(chǎn)資源進(jìn)行勘探的實(shí)踐和理論意義。本論文以四川盆地江油二郎廟地區(qū)中泥盆統(tǒng)石英砂巖為研究對(duì)象,以儲(chǔ)層綜合評(píng)價(jià)為目的,在實(shí)測(cè)剖面和詳細(xì)觀察巖心的基礎(chǔ)上,運(yùn)用薄片鑒定、掃描電鏡、孔滲分析及X射線衍射等測(cè)試技術(shù)手段,研究石英砂巖儲(chǔ)層的礦物組分、粒度及成巖作用和演化模式,分析儲(chǔ)層的成因和主要控制因素,對(duì)儲(chǔ)集空間類型進(jìn)行分類討論,并對(duì)儲(chǔ)層進(jìn)行了綜合評(píng)價(jià)。主要研究成果有如下幾點(diǎn):(1).龍門山構(gòu)造帶北段的中泥盆統(tǒng)油砂巖主要為一套前濱微相的中-細(xì)粒石英砂巖,成分和結(jié)構(gòu)成熟度都極高,沖洗層理非常發(fā)育,連續(xù)疊置的砂體厚度巨大;(2).砂巖儲(chǔ)層的孔隙類型較為簡(jiǎn)單,儲(chǔ)集空間主要為原生粒間孔,少量為長(zhǎng)石及巖屑被溶蝕作用形成的粒間溶孔、粒內(nèi)溶孔和鑄�？�,極少量為充填粒間溶孔的自生礦物集合體中的晶間孔。(3).該套石英砂巖可作為以原生粒間孔隙為主的典型儲(chǔ)層模型,孔隙連通性極好,孔隙度和滲透率具有很好的正相關(guān)關(guān)系,排驅(qū)壓力很低,喉道一般較大,孔隙結(jié)構(gòu)較好,為優(yōu)質(zhì)儲(chǔ)層類型。
[Abstract]:The Sichuan Basin is located in the southwest of China and is one of the most important oil-bearing basins in China. The Erlangmiao area is located in Jiangyou City, south of the Longmenshan structural belt in the northwest margin of the Sichuan Basin.Structural superposition with mine Liang- Tianjingshan-Erlangmiao thrust anticline belt.In the exploration practice of more than ten years, many sets of oil-bearing sandstone have been found in the northern section of Longmenshan structural belt, such as the oil sandstone of Shaximiao formation distributed in Jiangyou-Guangyuan area, which has the characteristics of wide outcrop distribution of oil and gas, good oil and gas display and large amount of resources, etc.As early as the 1950s, the oil sand resources in this area were investigated and studied on the surface. One of the 9 shallow wells drilled has obtained 27m thick oil sand at 91m, and the oil content is relatively high.It shows abundant resource reserves and good exploration prospect.The recent discovery of the Devonian oil sand paleoreservoir in the northern Longmen Mountain Liangjingshan structural belt has added practical and theoretical significance to the exploration of oil sand mineral resources in the northern Longmen Mountains.In this paper, the middle Devonian quartz sandstone in Jiangyou Erlangmiao area, Sichuan Basin is taken as the research object. The purpose of this paper is to evaluate the reservoir synthetically, on the basis of the measured section and the detailed observation of the core, using thin slice identification and scanning electron microscope.By means of pore permeability analysis and X-ray diffraction, the mineral composition, granularity, diagenesis and evolution pattern of quartz sandstone reservoir are studied, the origin and main controlling factors of reservoir are analyzed, and the reservoir space types are classified and discussed.The reservoir is evaluated synthetically.The main research results are as follows: 1.The Middle Devonian oil-bearing sandstone in the northern section of Longmenshan structural belt is mainly a set of foreshore microfacies medium-fine-grained quartz sandstone with very high maturity of composition and structure. The flushing bedding is very developed, and the continuous overlay sand body has a huge thickness.The pore type of sandstone reservoir is relatively simple, the reservoir space is mainly primary intergranular pore, a small amount of intergranular solution pore formed by dissolution of feldspar and lithic debris, intragranular dissolved pore and mold pore,A very small number of intergranular pores are found in the authigenic mineral aggregates filled with intergranular dissolved pores.This set of quartz sandstone can be used as a typical reservoir model with primary intergranular pores, excellent porosity connectivity, good positive correlation between porosity and permeability, low displacement pressure, large throat, and good pore structure.It is a high quality reservoir type.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 汪澤成,趙文智,彭紅雨;四川盆地復(fù)合含油氣系統(tǒng)特征[J];石油勘探與開發(fā);2002年02期

2 黃第藩;王蘭生;;川西北礦山梁地區(qū)瀝青脈地球化學(xué)特征及其意義[J];石油學(xué)報(bào);2008年01期

3 曾大乾，，李淑貞;中國(guó)低滲透砂巖儲(chǔ)層類型及地質(zhì)特征[J];石油學(xué)報(bào);1994年01期

本文編號(hào)：1711651