【摘要】：以野外露頭、錄井描述、巖心、地震資料為基礎(chǔ),利用普通薄片、熒光薄片、分析化驗(yàn)等方法,研究了柴達(dá)木盆地紅溝子油砂礦的儲(chǔ)層特征和成礦因素。結(jié)果表明:紅溝子油砂礦出露于紅溝子構(gòu)造高點(diǎn),沿著背斜兩翼分布,發(fā)育層位為新近系上油砂山組(N_2~1)和下油砂山組(N_2~2);紅溝子油砂礦的巖性主要為巖屑長(zhǎng)石砂巖和長(zhǎng)石巖屑砂巖,石英、長(zhǎng)石、巖屑含量為Q38F32R30,整體成熟度較低;儲(chǔ)層物性整體隨著深度變大而變差,孔隙度為3.10%~38.90%,平均為22.70%,滲透率為0.1×10~(-3)~10.0×10~(-3)μm~2,綜合評(píng)價(jià)為中孔、低滲儲(chǔ)層;油砂的含油率隨著孔隙度、滲透率的增加而增加,含油率為0.12%~15.55%,平均為2.51%;充足而持續(xù)的烴源供給、優(yōu)質(zhì)的儲(chǔ)層、有效的蓋層封閉、盆地高寒缺氧的古氣候環(huán)境、良好的運(yùn)移通道和較晚的構(gòu)造抬升是紅溝子油砂成礦的必要因素;孔隙度大于25.00%、滲透率大于1.0×10~(-3)μm~2、砂泥互層配置良好、泥巖層較厚、靠近背斜核部的區(qū)域是今后的勘探優(yōu)選目標(biāo)。該研究為柴達(dá)木盆地西部油砂資源的下步勘探開發(fā)提供了依據(jù)。
[Abstract]:Based on the field outcrop, logging description, core and seismic data, the reservoir characteristics and metallogenic factors of Honggouzi oil sand deposit in Chaidamu Basin are studied by using ordinary thin slices, fluorescent flakes and analytical and laboratory methods. The results show that the Honggouzi oil sand deposit is exposed to the high point of Honggouzi structure and distributes along the two wings of anticlinal. The developed strata are Neogene Upper Youshashan formation (N 鈮，

本文編號(hào)：2512739