国产bbaaaaa片,成年美女黄网站色视频免费,成年黄大片,а天堂中文最新一区二区三区,成人精品视频一区二区三区尤物

首頁> 外文學(xué)位 >Pore-scale Analysis of Residual Oil in Sandstones and its Dependence on Waterflood Salinity, Analysed by Tomography and Microscopy
【24h】

Pore-scale Analysis of Residual Oil in Sandstones and its Dependence on Waterflood Salinity, Analysed by Tomography and Microscopy

機(jī)譯：層析成像和顯微技術(shù)分析砂巖中殘留油的孔隙度分析及其對注水鹽度的依賴性

獲取原文
獲取原文并翻譯 | 示例
  • 摘要
  • 著錄項(xiàng)
  • 相似文獻(xiàn)
  • 相關(guān)主題

摘要

Understanding of the pore scale phenomena in porous media is a crucial step towards designing a more efficient enhanced oil recovery techniques in large scale oil reservoirs. Three dimensional (3D) x-ray micro CT imaging and recent advanced in 3D image analysis are primary tools that provide unprecedented level of detailed pore scale information of complex rock structures. Combining this technology with laboratory EOR experiments provides valuable insights into the mechanisms behind the oil recovery process. Low salinity water flooding is a relatively convenient and efficient tertiary recovery method which is applicable to the most of the reservoir types. However, its performance prediction is uncertain because this technique is not fully understood. Fundamental understanding of underlying mechanisms of low salinity water flooding, at the pore-scale, by direct visualization and image analysis is the aim of this thesis. In this thesis a technique to quantify fluids and rocks using series of images is developed and applied to 3D images of mini-plugs that underwent Spontaneous imbibition of high and low salinity brine or flooded by high or low salinity brine. Further, oil/rock and oil//brine interfacial areas, oil/brine interfacial mean curvature and oil saturation configuration in each pore was determined for each mini-plug. The image analysis and data interpretation demonstrate that small incremental oil recovery by low salinity brine corresponded to a slight shift towards water-wet in clay-rich outcrop sandstones. Further, the influence of oil composition in the low salinity brine flooding of reservoir sandstones was investigated. Two crude oil which are mainly distinctive in their total acid number (TAN) were used in spontaneous imbibition experiments. All mini-plugs shows strongly oil wet state after spontaneous imbibition of high and low salinity brine. The low salinity effect was observed in mini plug with high TAN oil while the mini-plugs with low TAN oil exhibited much less tertiary recovery. The analysis of mini-plug with high TAN oil shows that the salinity-induced wettability shift was sufficient to displace oil from locations that were already more water-wet in the state after spontaneous imbibition of high salinity brine, but was insufficient to cause oil movement from more oil-wet locations. Pore scale study of core flooded mini-plug shows that the low salinity brine redistributed oil blobs by displacing them from smaller to the larger pores and disconnecting oil. Microscopy studies of mini-plugs after spontaneous imbibition or core flooding provided further insight to the low salinity oil recovery mechanism at local minerals or wettability of pore walls.
機(jī)譯：了解多孔介質(zhì)中的孔垢現(xiàn)象是在大型油藏中設(shè)計(jì)更有效的強(qiáng)化采油技術(shù)的關(guān)鍵步驟。三維（3D）X射線微CT成像技術(shù)和3D圖像分析技術(shù)的最新發(fā)展是為復(fù)雜巖石結(jié)構(gòu)提供前所未有的詳細(xì)孔隙尺度信息的主要工具。將該技術(shù)與實(shí)驗(yàn)室的EOR實(shí)驗(yàn)相結(jié)合，可提供對石油采收過程背后機(jī)制的寶貴見解。低鹽度水驅(qū)是一種相對方便，有效的三次采油方法，適用于大多數(shù)儲層類型。但是，由于尚未完全了解該技術(shù)，因此其性能預(yù)測不確定。通過直接可視化和圖像分析，對孔隙度范圍內(nèi)的低鹽度水驅(qū)的基本機(jī)理有了基本認(rèn)識。在本文中，開發(fā)了一種使用一系列圖像量化流體和巖石的技術(shù)，并將其應(yīng)用于微型塞的3D圖像，這些微型塞自發(fā)吸收了高鹽度和低鹽度鹽水或被高鹽度或低鹽度鹽水淹沒。此外，對于每個(gè)微型塞，確定每個(gè)孔中的油/巖石和油//鹽水界面面積，油/鹽水界面平均曲率和油飽和度構(gòu)型。圖像分析和數(shù)據(jù)解釋表明，通過低鹽度鹽水進(jìn)行少量的采油量增加，對應(yīng)于富含粘土的露頭砂巖向水潤濕的輕微轉(zhuǎn)變。此外，研究了油組成對儲層砂巖低鹽度鹽水驅(qū)的影響。在自吸實(shí)驗(yàn)中使用了兩種主要具有總酸值（TAN）的原油。自發(fā)吸收高鹽度和低鹽度鹽水后，所有微型塞都顯示出強(qiáng)烈的油濕狀態(tài)。在含高TAN油的微型塞中觀察到低鹽度效應(yīng)，而含低TAN油的微型塞顯示出低得多的三次采收率。高TAN油微型塞的分析表明，鹽度引起的潤濕性變化足以將油從高鹽度鹽水自發(fā)吸收后已經(jīng)變水的位置驅(qū)替，但不足以引起油運(yùn)動從更多油濕的地方。巖心驅(qū)油微型塞的孔隙度研究表明，低鹽度鹽水通過將油團(tuán)從較小的孔隙轉(zhuǎn)移到較大的孔隙并斷開油的作用來重新分配油團(tuán)。自吸或巖心驅(qū)替后微型塞的顯微鏡研究提供了對局部礦物質(zhì)或孔隙壁潤濕性低鹽度采油機(jī)理的進(jìn)一步認(rèn)識。

著錄項(xiàng)

  • 作者

    Shabaninejad, Mehdi.;

  • 作者單位

    The Australian National University (Australia).;

  • 授予單位 The Australian National University (Australia).;
  • 學(xué)科 Applied mathematics.;Petroleum engineering.;Energy.
  • 學(xué)位 Ph.D.
  • 年度 2017
  • 頁碼 175 p.
  • 總頁數(shù) 175
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類 生理學(xué);
  • 關(guān)鍵詞

相似文獻(xiàn)

  • 外文文獻(xiàn)
  • 中文文獻(xiàn)
  • 專利
獲取原文

客服郵箱：kefu@zhangqiaokeyan.com

京公網(wǎng)安備：11010802029741號 ICP備案號：京ICP備15016152號-6 六維聯(lián)合信息科技 (北京) 有限公司?版權(quán)所有

  • 客服微信

  • 服務(wù)號