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    • 8. 发明申请
    • METHOD OF OIL RECOVERY USING A FOAMY OIL-EXTERNAL EMULSION
    • 使用泡沫油外部乳液回收油的方法
    • WO2007078379A2
    • 2007-07-12
    • PCT/US2006/040661
    • 2006-10-17
    • EXXONMOBIL UPSTREAM RESEARCH COMPANYBRAGG, James, R.KAMINSKY, Robert, D.LEONARDI, Sergio, A.
    • BRAGG, James, R.KAMINSKY, Robert, D.LEONARDI, Sergio, A.
    • C10G1/04
    • C09K8/38C09K8/36C09K8/594
    • An improved method is provided for recovering hydrocarbons. In one or more embodiments, a method is provided for producing hydrocarbons from a subterranean formation in which a solids-stabilized emulsion (SSE) is formed, the SSE comprising oil as a first liquid, droplets of a second liquid suspended in the oil, and solid particles that are insoluble in both the oil and the second liquid at the conditions of the subterranean formation. The SSE is exposed to gas so as to dissolve gas in the oil. Alternatively, the gas may be dissolved in the oil prior to formation of the emulsion. An SSE having the gas dissolved therein is thus formed. The SSE with dissolved gas is injected into the subterranean formation as a drive fluid, and at least a portion of the SSE is placed into one or more areas of the subterranean formation having an in situ pressure sufficiently lower than the selected partial pressure to permit evolution of at least a portion of the gas from the oil. Gas bubbles are thereby formed in the oil within the subterranean formation. The gas bubbles may produce a foamy solids-stabilized emulsion (foamy SSE) in situ in the formation. The foamy SSE can be used as a drive fluid to produce hydrocarbons from said subterranean formation. A method for making the foamy SSE is also provided.
    • 提供了一种用于回收烃的改进方法。 在一个或多个实施方案中,提供了一种从其中形成固体稳定的乳液(SSE)的地层生产烃的方法,该SSE包含油作为第一液体,悬浮在油中的第二液体的液滴,以及 在地层形成条件下不溶于油和第二液体的固体颗粒。 SSE暴露于气体,以将气体溶解在油中。 或者,在形成乳液之前,气体可以溶解在油中。 因此形成了溶解有气体的SSE。 具有溶解气体的SSE被作为驱动流体注入到地下地层中,并且SSE的至少一部分被置于具有足够低于所选分压的原位压力的地下地层的一个或多个区域中以允许演化 的至少一部分来自油的气体。 因此,在地层内的油中形成气泡。 气泡可能在地层中原位产生泡沫状固体稳定的乳液(泡沫SSE)。 泡沫SSE可以用作驱动流体,以从所述地层中产生烃。 还提供了制造泡沫状SSE的方法。