發(fā)布時(shí)間：2018-01-16 11:32

  本文關(guān)鍵詞：低滲透儲(chǔ)層可動(dòng)剩余油核磁共振分析　出處：《西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版)》2016年01期 　論文類(lèi)型：期刊論文

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

【摘要】：針對(duì)有代表性密閉取芯巖芯平行樣,分別進(jìn)行油水飽和度和油水高速離心驅(qū)替實(shí)驗(yàn)核磁共振分析,定量獲得儲(chǔ)層目前剩余油飽和度、采出油相對(duì)量、可動(dòng)油飽和度及驅(qū)油效率上限等參數(shù),對(duì)比各參數(shù)建立儲(chǔ)層可動(dòng)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(gè)滲透率級(jí)別(≥50、[10,50)、[1,10)和1 mD)儲(chǔ)層采出油飽和度分別為23.49%、16.81%、8.70%和9.99%,可動(dòng)油飽和度分別為50.34%、43.76%、29.67%和22.89%,可動(dòng)剩余油飽和度分別為26.85%、26.95%、20.97%和12.90%,由于儲(chǔ)層非均質(zhì)性影響,大于10 mD儲(chǔ)層采出油明顯高于10 mD以下儲(chǔ)層,但大于10 mD儲(chǔ)層可動(dòng)油飽和度較高,故可動(dòng)剩余油飽和度也較高,小于1 mD的儲(chǔ)層可動(dòng)剩余油明顯低于其他儲(chǔ)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(hào)：1432874