稠油蒸汽吞吐开采过程中焖井压降解释研究  

Research on Pressure Drop Interpretation in the Stage of Stewing in Steam Soak of Heavy oil Recovery

作　　者：雷占祥[1] 姜汉桥[2] 陈月明[1] 刘同敬[2] 杜庆军[1] 金显鹏[3] 

机构地区：[1]中国石油大学石油工程学院,山东东营257061 [2]中国石油大学采收率研究中心,北京昌平102249 [3]大庆油田有限责任公司井下作业分公司,黑龙江大庆163453

出　　处：《大庆石油地质与开发》2006年第4期92-95,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国青年创新基金(编号为w051805)的部分研究成果

摘　　要：针对稠油蒸汽吞吐开采过程中焖井阶段的特点,考虑油层和流体非均质性,建立了包括能量守恒方程在内的非均质地层渗流数学模型,通过改进流线方法对其进行求解。另外,根据井筒周围是否存在“蒸汽腔”为基准,提出了“转折点”的概念,认为“转折点”前存在蒸汽腔,其数据可以按试井原理进行解释,而“转折点”后蒸汽腔消失,其数据以汽相转化为水的量进行解释,实现了高温测试解释。基于以上研究,应用辽河油田几口井的实测资料对建立的数学模型进行了检验,结果表明,建立的试井解释模型能够较准确地反映油藏动态变化规律。Aimed at the characteristics of stewing stage in huff and puff of thermal recovery,a mathematic model including energy balance equation is built in which such factors as heterogeity of reservoir and fluids are taken into account.And then this model is solved by using improved streamline method.Besides,in this part,according to the condition that whether there exists steam chamber or not,the concept of 'turning point' is proposed.It is considered that data before this point can be interpreted with traditional well testing method,however,for those after this point,should be interpreted by the conversion amounts from steam into hot water.Based on the research,the model is tested by using actual data offered by Liaohe Oilfield.It is indicated that the well-testing model built in the stage of stewing can show the dynamic change of reservoir.

关 键 词：蒸汽吞吐 焖井 非均质 数学模型 流线 

分 类 号：TE345[石油与天然气工程—油气田开发工程]