| 题名 |
應用核磁共振技術於油／水毛細壓力量測 |
| 并列篇名 |
Oil/Brine Capillary Pressure Determined by NMR |
| DOI |
10.30069/MM.201809_62(3).0003 |
| 作者 |
王騏瑋(C. W. Wang)；梁閎森(H. S. Liang)；黃德坤(T. K. Huang)；吳偉智(W. C. Wu) |
| 关键词 |
核磁共振技術 ； 油／水毛細壓力曲線 ； Nuclear magnetic resonance technique ； oil/ brine capillary pressure curve |
| 期刊名称 |
鑛冶：中國鑛冶工程學會會刊 |
| 卷期/出版年月 |
62卷3期（2018 / 09 / 01） |
| 页次 |
29 - 35 |
| 内容语文 |
繁體中文 |
| 中文摘要 |
當兩不相容流體存在於一個類似毛細管中，其接觸面會產生毛細壓力。因此，當岩心中的小孔隙內有多相流體存在時，會發生毛細現象，使不同相流體分開，增加流體間的壓力差，影響彼此的流動性。岩心毛細壓力是油層工程相當重要的參數，它與油氣流動能力的好壞有關，控制著流體在油層內的分布情形，並且影響油氣移棲的路徑、方向及所需的外力。本研究利用核磁共振岩心分析儀，搭配離心機，建立油／水毛細壓力試驗方法，並以Fortran撰寫的曲線擬合程式，繪出非洲礦區4顆岩心樣本之三條毛細壓力曲線（1^(st)排退、1^(st)浸潤、及2^(nd)排退），並求出殘餘水飽和度（Irreducible water saturation, S_(wirr)）和殘餘油飽和度（Residual oil saturation, S_(or)），可提供生產模擬時毛細壓力過渡 帶儲油量評估，能提高後續開發生產模擬與採收率計算的代表性。 |
| 英文摘要 |
Capillary pressure is the difference in pressure across the interface between the two immiscible fluids in a capillary-like tube. A reservoir, which typically contains multiple phases, such as oil, water, and gas, can be considered as a complex network of capillaries. The capillary forces hold these fluids in equilibrium with each other and with the rock. Capillary pressure is very important in reservoir engineering because it is a major factor controlling the fluid distributions in a reservoir rock and having a significant effect on migration pathway of hydrocarbon. In this study, an NMR based method using a centrifuge to create a distribution of fluid in a core sample was applied to acquire oil/brine 1_(st) drainage, 1_(st) imbibition and 2_(nd) drainage capillary pressure curves of four core samples from Africa. A Fortran curve fitting program was used to determine the irreducible water saturation (S_(wirr)) and residual oil saturation (S_(or)). Results of this study should be useful for estimating the thickness of the oil/water transition zone, simulating exploitation schemes and determining recovery efficiency. |
| 主题分类 |
工程學 >
礦冶與冶金工程 |
| 参考文献 |
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