Maximizing the utility of centrifuge capillary pressure/relative permeability experiments

最大限度地发挥离心机毛细管压力/相对渗透率实验的效用

• 批准号: 513866-2017
• 负责人: Ruth, Douglas
• 金额: $ 1.27万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640639
• 关键词: Maximizing; utility; centrifuge; capillary; pressure

One of the standard methods used to determine capillary pressure versus saturation curves in a sample ofpetroleum reservoir rock is the centrifuge technique. In addition to capillary pressure, modern centrifugesallow determination of relative permeability using the transient period observed in capillary pressureexperiments - by implementing an inverse data analysis technique, relative permeability curves can bedetermined using this production versus time data during this period. The main criticisms of determining bothtypes of curves simultaneously are related to the uniqueness of the curves that are obtained. Statoil has a verylarge data base of capillary pressure/relative permeability curves obtained by simultaneous centrifugeexperiments but do not know how much confidence they can place in these data. If it can be shownconclusively that both relative permeability and capillary pressure can be found simultaneously in a singleexperiment, the confidence in using the centrifuge to determine these properties would be greatly enhanced. Ofall the methods used to determine relative permeability, the centrifuge offers the best overall speed andprecision. Making use of Statoil's extensive data base, and in cooperation with Statoil personnel, a collectionof data sets that include a wide range of petrophysical properties will be selected. A comprehensive study ofthe performance of a numerical simulator to determine both capillary pressure and relative permeability curveswill be performed on these data. In this way the validity of the data will be verified. Furthermore, the datawill be studied to determine a protocol for optimizing the quality of the data. The study will be conductedusing commercial simulators, PORLAB© and Sendra©. The petroleum industry is a major source of wealth inCanada. Capillary pressure and relative permeability are fundamental properties essential to the prediction ofrecoverable oil reserves - any research that can improve the quality of these data will have a major impact onthe efficient and environmentally safe recovery of these reserves and will therefore bring major economicbenefits to Canada.

离心分离技术是测定石油储集岩样品中毛管压力-饱和度曲线的标准方法之一。除了毛细管压力外，现代离心机还可以使用毛细管压力实验中观察到的瞬态来确定相对渗透率-通过实施逆数据分析技术，可以使用该期间的产量与时间数据来确定相对渗透率曲线。同时确定两种曲线的主要批评与所获得的曲线的唯一性有关。挪威国家石油公司有一个非常大的数据库的毛管压力/相对渗透率曲线获得同步离心实验，但不知道有多少信心，他们可以在这些数据.如果能确定性地表明，相对渗透率和毛细管压力可以在一次实验中同时得到，那么用离心机测定这些性质的可信度将大大提高。在测定相对渗透率的方法中，离心机提供了最佳的总体速度和精度。利用挪威国家石油公司广泛的数据库，并与挪威国家石油公司的工作人员合作，将选择包括广泛的岩石物理特性的数据集。将对这些数据进行数值模拟器性能的综合研究，以确定毛管压力和相对渗透率曲线。通过这种方式，将验证数据的有效性。此外，将对数据进行研究，以确定优化数据质量的协议。本研究将使用商业模拟器PORLAB©和Sendra©进行。石油工业是加拿大财富的主要来源。毛管压力和相对渗透率是预测可采石油储量必不可少的基本属性-任何能够提高这些数据质量的研究都将对这些储量的有效和环境安全开采产生重大影响，因此将为加拿大带来重大经济效益。