断块油藏的测井储层评价

LOG RESERVOIR EVALUATION IN FAULT BLOCK POOLS

杨少春 信荃麟

Yang Shaochun Xin Quanlin

断块油藏测井解释模型的建立、资料的处理及储层评价应始终考虑地质因素的影响。不同类型储层、不同沉积相带以及不同开发时期的测井响应、岩性、物性、韵律性、电性及含水率等均不相同,根据这些差异和特点,分别建立了孔隙度、渗透率和含油饱和度等参数的解释模型和计算模型,提高了解释精度。勘探和开发阶段测井资料的处理除应考虑岩性、沉积相带、注水后储层结构变化外,还应考虑断块的复杂性及断块之间的联系。依据处理出的储层参数,结合断块油藏的特点,引入灰色理论和模糊数学等方法,并总结出了定性、定量两种测井储层评价方法,与钻井结果吻合较好。

The influence of geological factors should always be taken into account in establishing well log interpretation model,log data processing and reservoir evaluation.The log responce,the lithologic,petrophysic,rhythmic and electric characters and water contents of different types of reservoirs,different sedimental facies and different exploitation periods are different.According to these differences,the models of interpretation and calculation for porosity,permeability and oil saturation degree are establoshed and the interpretation accuracy thus inproved.Besides,the complexity of the fault blocks and the connection between the fault blocks should also be considered in log data processing during oil exploration and development.Based on the reservoir parameters obtained through data processing and the characters of fault block reservoirs,the methods of log reservoir quantitative and qualitalive evaluation are summerized by applying grey theory and fuzzy mathematical methods.The practical application results of the methods coincide well with well drilling.

10.11743/ogg19990120