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公开(公告)号：US4364431A
公开(公告)日：1982-12-21
申请号：US217445
申请日：1980-12-17
申请人： Ali M. Saidi , Frans T. Hesselink
发明人： Ali M. Saidi , Frans T. Hesselink
摘要： Method for recovering oil from an underground formation consisting of blocks of relatively low permeability with an oil-wet pore space containing oil surrounded by a fracture network of relatively high permeability by supplying to the fracture network an aqueous solution of a surfactant adapted for decreasing the surface tension between water and oil and displacing the oil from the oil-wet pore space of the blocks.
摘要翻译： 从具有相对低渗透性的块的地下地层中回收油的方法，所述地下地层由具有相对较高渗透性的断裂网络包围的油的油 - 湿孔隙区域提供，所述油层通过向断裂网络供给适于减少表面的表面活性剂的水溶液 水和油之间的张力，并从块的油 - 湿孔隙中移出油。
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公开(公告)号：US5937363A
公开(公告)日：1999-08-10
申请号：US880805
申请日：1997-06-23
申请人： Ali M. Saidi , Daniel Longeron
发明人： Ali M. Saidi , Daniel Longeron
CPC分类号： E21B49/00
摘要： The invention relates to a method for characterizing a hydrocarbon reservoir comprising a gas cap (1) and an oil zone (2) with respectively Scwg and Scwo as the water saturation in each zone. The zone is invaded by gas either by gas injection, gas cap expansion or because of evolution of dissolved gases. In the method, the decrease in the initial water saturation Scwo in oil zone (6) during the displacement thereof by the gas is taken into account, the decrease being gradual down to Scwg which is distinctly below Scwo.
摘要翻译： 本发明涉及一种用于表征包括气帽（1）和油区（2）的烃储层的方法，其中在每个区中分别具有Scwg和Scwo作为水饱和度。 该区域由气体注入，气帽膨胀或由于溶解气体的演变而被气体侵入。 在该方法中，考虑到在气体位移期间油区（6）中初始水饱和度Scwo的降低，其逐渐下降到Scwg明显低于Scwo。
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