【摘要】：低滲透砂巖已成為油氣增儲(chǔ)上產(chǎn)的重要勘探開發(fā)目標(biāo),但孔隙結(jié)構(gòu)類型多樣、微孔發(fā)育使得測(cè)井響應(yīng)特征難以明顯反映儲(chǔ)層及其有效性。利用壓汞、核磁共振、物性、薄片及CT等資料分析東營凹陷南斜坡沙四段(Es_4)低滲透灘壩砂巖孔隙結(jié)構(gòu),并將其劃分為三大類五小類,即:Ⅰ類(Ⅰ_1和Ⅰ_2)、Ⅱ類(Ⅱ_1和Ⅱ_2)和Ⅲ類�？紫督Y(jié)構(gòu)類型受控于礦物、粒徑及成巖作用等的綜合影響,微孔(孔喉半徑0.024 8μm)含量及其特征是造成孔隙結(jié)構(gòu)類型差異的重要因素。在此基礎(chǔ)上,分析礦物含量、粒徑、電性與微孔含量的關(guān)系,發(fā)現(xiàn)礦物、粒徑影響微孔含量及特征,且微孔含量與電性特征關(guān)系密切。利用測(cè)井曲線對(duì)低滲透砂巖微孔含量變化的敏感性,有助于在井筒剖面進(jìn)行孔隙結(jié)構(gòu)類型劃分及識(shí)別有效儲(chǔ)層。
[Abstract]:Low permeability sandstone has become an important exploration and development target for oil and gas reservoir increase and production, but the pore structure types are diverse, and the development of micropores makes it difficult to reflect the reservoir and its effectiveness obviously. Based on the data of mercury injection, nuclear magnetic resonance (NMR), physical properties, thin sheet and CT, the pore structure of Es_4 low permeability beach bar sandstone in the south slope of Dongying sag is analyzed and divided into three categories and five categories, namely, class I (鈪，

本文編號(hào)：2528044