本文選題：儲層特征 + 控制因素��； 參考：《東北石油大學》2017年碩士論文

【摘要】：大慶長垣扶余油層近幾十年的勘探開發(fā)所動用的儲層主要是中高滲油層,但隨著勘探開發(fā)的深入發(fā)展,低滲透原油產量每年都在遞增,低滲透儲層已成為油氣增儲增產的新主力戰(zhàn)場。因此,系統(tǒng)研究低滲透儲層特征及深入剖析其優(yōu)質儲層成巖主控因素成為當前促進低滲透油層勘探開發(fā)的最急需最基礎的工作任務。本論文針對大慶長垣扶余油層儲層以低滲透為主,儲層物性縱橫向變化大、相對優(yōu)質儲層預測難的特點,綜合運用石油地質學、光性礦物學、沉積巖石學和構造地質學等相關專業(yè)知識,結合儲層研究技術方法,如偏光顯微鏡、掃面電鏡、X-射線衍射儀以及圖像分析軟件系統(tǒng)等,開展低滲透含油區(qū)儲層特征的綜合研究。完成了研究區(qū)扶余油層巖石學特征及物性特征,儲集空間類型及結構,儲層成巖作用及儲層控制因素的研究分析。研究結果表明:扶余油層中常規(guī)儲層以低泥/鈣含量的砂巖為主,致密儲層中高泥/鈣含量的砂巖比例增多;其中礦物組成對儲層類型影響明顯,石英和長石是形成儲層的有利物質基礎;扶余油層常規(guī)儲層粒度組成主要為中細砂巖,而致密儲層主要為粉砂巖,泥質含量較高,砂巖粒度對致密儲層影響作用較弱,其粒度與物性相關性較差;在孔隙結構上,扶余油層常規(guī)儲層喉道較粗,平均喉道半徑在100nm~1000nm之間,而致密儲層喉道較細,以50nm~500nm為主;機械壓實作用、膠結作用以及溶蝕作用是對儲層具有重要影響的成巖作用,其中機械壓實作用對儲層的破壞性最大,膠結作用破壞性主要在局部起主導作用,溶蝕作用是改善儲層結構,形成儲層的有利因素。
[Abstract]:The reservoirs used in the exploration and development of Fuyu reservoir in Daqing Placanticline in recent decades are mainly medium-high permeability reservoirs, but with the further development of exploration and development, the production of low-permeability crude oil is increasing every year. Low permeability reservoir has become a new main battlefield of increasing oil and gas reservoir and increasing production. Therefore, it is the most urgent and basic task to study the characteristics of low permeability reservoir and analyze the main diagenetic factors of its high quality reservoir in order to promote the exploration and development of low permeability reservoir. This paper aims at the characteristics of Fuyu reservoir in Daqing Placanticline, which is characterized by low permeability, large variation of reservoir physical properties in longitudinal and horizontal directions, and difficulty in predicting relatively high quality reservoirs. The comprehensive use of petroleum geology and photometric mineralogy is used in this paper. Combined with the technical methods of reservoir research, such as polarizing microscope, scanning electron microscope (SEM), X-ray diffraction (SEM) and image analysis software system, the comprehensive study of reservoir characteristics in low permeability oil-bearing areas is carried out. The petrological and physical characteristics of Fuyu reservoir, the type and structure of reservoir space, the diagenesis of reservoir and the controlling factors of reservoir have been studied and analyzed. The results show that the conventional reservoir in Fuyu reservoir is dominated by sandstone with low mud / calcium content, and the proportion of sandstone with high mud / calcium content in dense reservoir increases. Quartz and feldspar are the favorable material foundation for reservoir formation, the grain size composition of the conventional reservoir in Fuyu reservoir is mainly medium fine sandstone, while the dense reservoir is mainly siltstone, the content of clay is high, the influence of sandstone granularity on tight reservoir is weak, In pore structure, the throat of Fuyu reservoir is coarse, the average throat radius is between 100nm~1000nm, and the throat of dense reservoir is fine, mainly 50nm~500nm. Cementation and dissolution are diagenesis which has important influence on reservoir. Mechanical compaction has the most destructive effect on reservoir, the destruction of cementation is mainly in local area, and dissolution is to improve reservoir structure. A favorable factor in the formation of a reservoir.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P618.13

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