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MICROBIAL PROCESSES FOR INCREASING FLUID MOBILITY IN A HEAVY OIL RESERVOIR

机译:提高稠油油藏流体流动性的微生物过程

摘要

Methods are provided for increasing overall fluid mobility in a near-wellbore region in an oil sands reservoir, for example in a reservoir having an inter-well region between a first well and a second well of a well pair in which at least a portion of the near-wellbore region is within the inter-well region. The methods may involve inoculating the near-wellbore region with a microorganism, wherein the near-wellbore region comprises a hydrocarbon phase and an aqueous phase, the viscosity of the hydrocarbon phase being greater than the viscosity of the aqueous phase. Conditions may be maintained in the near-wellbore region so that the microorganism metabolizes at least a portion of the hydrocarbon phase so that saturation of the near-wellbore region by the hydrocarbon phase decreases and saturation of the near-wellbore region by the aqueous phase increases.
机译:提供了用于增加油砂储层中的近井眼区域中的总流体流动性的方法,例如,在具有油井对的第一井和第二井之间的井间区域的油藏中,其中至少一部分井眼位于井对中。近井眼区域在井间区域内。该方法可以包括用微生物接种近井眼区域,其中近井眼区域包含烃相和水相,烃相的粘度大于水相的粘度。可以在近井眼区域中保持条件,以使微生物代谢至少一部分烃相,使得烃相对近井眼区域的饱和度降低,而水相对近井眼区域的饱和度升高。 。

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