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    • 74. 发明申请
    • AN IN SITU EXTRACTION PROCESS FOR THE RECOVERY OF HYDROCARBONS
    • 用于油气回收的原萃取方法
    • WO2008144934A1
    • 2008-12-04
    • PCT/CA2008/001050
    • 2008-05-29
    • N-SOLV CORPORATIONNENNIGER, JohnDUNN, Stephen
    • NENNIGER, JohnDUNN, Stephen
    • E21B43/22C09K8/58C09K8/592E21B21/06E21B43/24
    • E21B43/16C09K8/58C09K8/592
    • An in situ extraction process for the recovery of hydrocarbons from a hydrocarbon bearing formation, including the steps of injecting a solvent consisting substantially of one of the group of H2S, Ammonia or COS into the formation to mobilize the hydrocarbons for extraction by forming a mobile in situ extraction fluid; and lifting the extraction fluid containing the mobilized hydrocarbons from the underground formation to the surface. In a further aspect an extraction method for a specific reservoir is provided including the steps of: establishing a minimum desired extraction rate, based on a value for the porosity, permeability and dead oil viscosity of the in situ bitumen in the specific reservoir, determining a desired minimum operating extraction temperature determining a desirable range of operating pressures identifying solvents predicted to deliver the operating extraction temperature within the range of operating pressures, and selecting a preferred solvent to use in the process.
    • 一种用于从含烃地层回收烃的原位萃取方法,包括以下步骤:将基本上由H 2 S,氨或COS组成的溶剂组成的溶剂注入到地层中,以通过形成移动体来移动烃进行萃取 原位萃取液; 并将含有起动烃的提取流体从地下地层提升到地面。 在另一方面,提供了一种用于特定储存器的提取方法,包括以下步骤:基于特定储存器中原位沥青的孔隙率,渗透性和死油粘度的值建立最小期望提取率,确定 期望的最小操作提取温度确定了操作压力的期望范围,该操作压力识别预期将操作提取温度提供在操作压力范围内的溶剂,以及选择在该过程中使用的优选溶剂。