稠油层测井系列与解释方法研究

STUDY ON LOGGING PROGRAM AND INTERPRETATION METHOD OF HEAVY OIL RESERVOIR

辽河油区稠油层的岩性、物性及油品性质与稀油有较大区别，但以往所用测井系列基本相似。为更好认识和开发稠油层，测井系列必须增加微球聚焦、密度、中子伽马、碳氧比等测井项目。在开发中应测井温、流量、密度、压力等曲线；热采前还应测吸水剖面；当用声波时差求扎隙度时，应进行油气校正。测井解释中对孔隙度、渗透率、泥质含量和含油饱和度给出了计算方法和公式。定量计算的结果，为稠油层开发提供了较为可靠的测井依据。

The lithology. petrophysical property, oil property of heavy oil reservoir arequite different frorn that of light oil reservoir in Liaohe oil zone, but the logging prograrnused before was almost similar. In order to understand and develop heavy oil reservoir better,microspherically focused, density, neutron gamma and carbon/oxygen logs, etc. must beadded to the logging program. Logs as well temperature, flow rate , density and pressure,etc. should be surveyed during production period; water absorption profile should be loggedbefore thermal recovery; oil-gas correction should be made when achieving porosity bymeans of interval transit time. Calculation methods and formulae of porosity, permeability,shale content and oil saturation are given in the part of log interpretation. Quantitative calculation has provided reliable logging basis for development of heavy oil reservoirs.