Mathematical modeling of magnetic refrigerators for superfluid helium

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 2, pp. 17–20, February, 1990.     

Vapor-liquid turbodecompressor of a helium refrigerator

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 4, pp. 23–24, April, 1989.     

Mathematical modeling of the single-phase nonsteady state of superfluid helium in a channel

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 11, pp. 21–24, November, 1990.     

Development of a method of calculation of a static magnetic refrigerator with a diode coating

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 9, pp. 20–22, September, 1990.     

Characteristics of the operation of a cryostat with supercooled superfluid helium

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 2, pp. 28–30, February, 1992.     

Absorption of powerful heat pulses by superfluid helium

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 8, pp. 31–34, August, 1989.     

Optimization of helium refrigerator with an energy-generating cryogenic stage

The dynamic state of helium can be realized employing a centrifugal compressor driven by a turboexpander. An energy-generating cryogenic stage (ECS) has been created that helps produce work for driving a cold turboexpander and simultaneously generating cold for removal of the heat of compression. Optimization calculations of helium cascade akin in heat and power to ECS have been performed. The referred approach can be used as well for creating hydrogen liquefiers with an ECS. __________ Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 8, pp. 34–36, August, 2007.     

Investigation of a magnetic refrigerator working at ambient temperature

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 7, pp. 14–15, July, 1992.     

Physical model of heat influx to the working body of a magnetic refrigerator

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 6, pp. 9–10, June, 1990.     

First test results of an active-regenerator type magnetic refrigerator

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 10, pp. 4–5, October, 1991.     

碳酸盐岩缝洞型储集体特征及分类分级地质建模

以塔河油田奥陶系缝洞型碳酸盐岩油藏为例,以储集空间类型和规模为标准划分缝洞储集体类型,采用分类分级的方法建立缝洞型储集体三维地质模型。基于岩心、钻井、测井、地震等资料,将缝洞储集体划分为溶洞型、溶蚀孔洞型、裂缝型、基质岩块4种类型,其中溶洞型储集体又细分为大型溶洞和小型溶洞2种亚类,裂缝型储集体划分为大尺度裂缝、中尺度裂缝、小尺度裂缝及微裂缝4种亚类。大型溶洞建模采用"地震截断,模式修正"的确定性方法、小型溶洞采用以大型溶洞为训练图像的多点地质统计学随机模拟方法、溶蚀孔洞采用序贯高斯随机模拟方法、大尺度裂缝采用人工解释的确定性方法、中尺度裂缝采用蚂蚁体追踪的确定性方法、小尺度裂缝采用基于目标的随机模拟方法,微裂缝及基质岩块因储集性能差,一般不建立离散分布模型,最后将各类缝洞储集体离散分布模型进行融合,构建了典型缝洞单元离散分布模型。塔河油田6区、7区应用效果表明,分类分级建模提高了该类油藏的建模精度,有效地指导了注水开发,改善了开发效果。     

基于储层静态地质参数的一种随机建模结果排序方法

储层随机建模可以产生大量实现,而油藏数值模拟由于计算量大,通常只能对非常有限的实现进行模拟计算。随机选择实现常常会导致过于悲观或过于乐观的模拟结果,并且无法合理评价地质模型所包含的不确定性。利用与数模响应密切相关的静态地质指标,如连通原油体积对实现进行排序,然后选择典型的实现进行数模,较好地解决这一问题。但是,该指标没有考虑含油网格与生产井之间的距离及渗透率大小,而这两个参数对于流体流动有着重要的控制作用。在连通原油体积的基础上提出了一种新的排序指标。该指标在计算连通原油体积的公式上增加了网格与生产井之间的距离和渗透率两个影响因子。通过实例对这两种指标进行了对比研究,新指标更好地反映了不同实现的差别。