剩余油和残余油有区别么？
什么是剩余油？一般地讲，在可采储量中未采出的那一部分原油笼统地称为剩余油。在概念上严格地讲，注水开发后地下的剩余油应该包括两部分，即剩留油和残余油。
剩留油是指由于波及系数低， 注入水尚未波及到的区域内所剩留下来的原油，即局部死油区内的油。例如：构造高部位注 水未波及到的油层；河道边差部位低渗透夹层内和水绕过带的剩余油；井间未被钻遇到的透镜状砂体中的原油；局部不渗透遮挡(如正断层、逆掩断层、逆牵引断层等)处的原油等。 这部分油在宏观上是连续分布的，其形成与油藏平面和厚度上的宏观非均质性、注采井网的布置以及注入剂的流度等有关。
残余油是指注入水在波及区内或孔道内已驱过区域仍然残留、未能被驱走的原油。例如，毛细管力束缚的残余油，它残留在工作剂通过的地带，而在细小的孔隙中完全被毛细管力束缚的油；或由于压力梯度小，油不流动，或岩石表面的薄膜油等。这类油的分布是微观的，且大多不连续。
residual oil是剩余油还是残余油？
residual oil和remaining oil有区别么？bypassed oil?或者stranded oil？
All oil reservoirs have a transition zone,an interval tens of feet below the traditionally-defined
producing oil-water contact (OWC)where the oil saturation falls rapidly.The thickness of this interval is controlled by
capillary forces and the
nature of the rock’s“wetting phase”,with lower permeability oil-wet rocks providing thicker TZs and water-wet rocks providing thinner ones.
While all oil reservoirs have a transition zone,not all have a residual oil zone,since specific hydrological or geological conditions need to have occurred to create a ROZ,as further discussed below.The great bulk of the ROZ will be at a residual oil saturation(similar to that after a conventional waterflood),tapering to near zero oil saturation at the base.
The transition zone(TZ)is the upper portion of the reservoir interval just below the traditional OWC and produces both water and oil.The residual oil zone(ROZ)is generally the middle and lower portions of the reservoir interval below the traditional OWC and upon initial completion usually on produces water.
源自下述文章or SPE 102964 or SPE 102972
源自
http://www.worldoil.com/magazine/MAGAZINE_DETAIL.asp?ART_ID=2961&MONTH_YEAR=Aug-2006
Stranded Oil in the Residual Oil ZoneAn analysis by Advanced Resources International, Arlington, VA, and Melzer Consulting, Midland, Texas, for the U.S. Department of Energy's Office of Fossil Energy
Five reports on Stranded Oil in the Residual Oil Zone (ROZ) introduce one of the most exciting new, unconventional oil resources that can be added to our domestic oil resource base. This is "stranded (or residual) oil" in the transition zone below the traditional oil-water contact that exists in many domestic oil reservoirs. This resource has not previously been included in any official domestic oil resource databases. Work was undertaken in three U.S. oil basins ? the Permian, Williston and Big Horn -- to more rigorously define the size and potential of this new resource, and how much may be recoverable using CO2-EOR techniques.
http://fossil.energy.gov/programs/oilgas/publications/eor_co2/ROZ_Melzer_Document_with_figures.pdfhttp://fossil.energy.gov/programs/oilgas/publications/eor_co2/ROZ_Phase_II_Document.pdfhttp://fossil.energy.gov/programs/oilgas/publications/eor_co2/ROZ_Permian_Document.pdfhttp://fossil.energy.gov/programs/oilgas/publications/eor_co2/ROZ_Williston_Document.pdfhttp://fossil.energy.gov/programs/oilgas/publications/eor_co2/ROZ_Big_Horn_Document.pdfhttp://fossil.energy.gov/programs/oilgas/publications/eor_co2/E_-_ROZ_PROJECT_FACT_SHEET.pdf[ 此贴被笑韵在2008-12-25 14:02重新编辑 ]
