双参数石灰岩碳氧比刻度模型井的研制

Two-calibration-parameters Wells for C/O Logging Tools

研究不同孔隙度与饱和度的双参数刻度井系列的方法,实际建成了1口中等孔隙度的刻度井。该刻度井地层外径1 200mm、高1 350mm,地层骨架由纯石灰岩颗粒堆积而成,采用2组平均粒径不同的颗粒,按照5∶3的质量比例混合堆积,形成了15.1p.u.的地层孔隙度。用1,3-丁二醇与水的混合溶液作为地层孔隙流体,二者质量配比为5∶2,模拟地层含柴油饱和度为50.4%。该模型井可用于碳氧比测井仪的研发与改进,提供仪器校准服务。

The method of constructing a series of wells for calibrating the parameters of porosity and saturation simultaneously is studied.And a calibration well with medium formation porosity has been constructed.In the calibrator,the formation has an outer diameter of 1 200 mm and a height of 1 350 mm.Matrix of the formation is built up by random packing pure limestone grains,and 15.1 p.u.formation porosity is derived from mixing two groups of grains with different average particle sizes and the mass ratio of 5∶3.Porous fluid in the formation is a solution of 1,3-butyleneglycol in water with the mass radio of 5∶2,and the simulated formation diesel oil saturation is 50.4%.The calibrator is used for research and development of C/O logging tool,and also provides calibration service for the C/O logging tool.