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  本文關(guān)鍵詞：低滲透儲層可動剩余油核磁共振分析　出處：《西南石油大學學報(自然科學版)》2016年01期 　論文類型：期刊論文

  更多相關(guān)文章： 低滲透儲層 高速離心 核磁共振 可動剩余油 非均質(zhì)性

【摘要】：針對有代表性密閉取芯巖芯平行樣,分別進行油水飽和度和油水高速離心驅(qū)替實驗核磁共振分析,定量獲得儲層目前剩余油飽和度、采出油相對量、可動油飽和度及驅(qū)油效率上限等參數(shù),對比各參數(shù)建立儲層可動剩余油飽和度核磁共振分析方法。研究表明,建立巖芯飽和油束縛水狀態(tài)和水驅(qū)油的最佳離心力分別為2.250 MPa和0.220MPa,4個滲透率級別(≥50、[10,50)、[1,10)和1 mD)儲層采出油飽和度分別為23.49%、16.81%、8.70%和9.99%,可動油飽和度分別為50.34%、43.76%、29.67%和22.89%,可動剩余油飽和度分別為26.85%、26.95%、20.97%和12.90%,由于儲層非均質(zhì)性影響,大于10 mD儲層采出油明顯高于10 mD以下儲層,但大于10 mD儲層可動油飽和度較高,故可動剩余油飽和度也較高,小于1 mD的儲層可動剩余油明顯低于其他儲層。
[Abstract]:In view of the representative closed core parallel samples, the oil water saturation and oil water high speed centrifugal flooding experiment NMR analysis were carried out respectively, the present remaining oil saturation of the reservoir was obtained quantitatively, and the relative amount of produced oil was obtained. According to the parameters of movable oil saturation and upper limit of oil displacement efficiency, the NMR analysis method of movable remaining oil saturation of reservoir is established. The optimum centrifugal force of core saturated oil irreducible water state and water drive oil is 2.250 MPa and 0.220 MPA, respectively, and four permeability levels (鈮，

本文編號：1432874