项目名称: 电法测井中非均匀地层多参数反演方法研究
项目编号: No.11301341
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 陈娓
作者单位: 上海立信会计学院
项目金额: 22万元
中文摘要: 石油是重要的国家资源,在国家经济发展中具有非常重要的地位,石油的勘探和开发是一项重要的战略任务。电法测井是石油开发的一个重要方法,在工程中已被广泛应用,其根本任务是探求复杂非均匀地层中的物理参数和几何参数。由于人们事先不了解实际地层的情况,测井所面对的是一个多参数反演问题。目前关于电法测井反问题的研究大多涉及单参数识别,对应用中更为重要的多参数辩识问题,其理论探讨及数值求解还远未达到有效及完善的程度,如物理参数个数较多时,如何构造高效的计算方法;如何同时反演多个几何参数以及同时反演物理参数和几何参数等,都是涉及电法测井的关键技术问题,需要认真进行讨论,具有很大的挑战性。本项目拟以电阻率测井和自然电位测井为代表,力图在有关正问题数学模型的基础上,讨论电法测井中地层物理参数和几何参数的反演问题,研究设计高效的数值计算方法,为两种电法测井方法奠定可靠的数学理论基础,为测井资料的有效解释提供依据。
中文关键词: 自然电位测井;阵列侧向电阻率测井;反演方法;数学模型;数值模拟
英文摘要: Petroleum is a kind of important national resource, and plays an essential role in the national economic development, petroleum exploration and exploitation is a significant strategic task. Electrical well-logging is a major method for the petroleum exploration and exploitation, and has been widely applied in engineering, its basic task is to find out physical parameters and geometric parameters of complicated heterogeneous formation. Because people don't understand the actual formation in advance, the well-logging problem is a multiple parameter inversion problem. Recent studies on the inversion problem for the electrical well-logging are mostly concerned with single parameter identification. However, for the multiple parameter identification, which is more important than the former in the application, the corresponding theoretical study and numerical method are far to achieve effective and perfect degree. For example, we should discuss seriously the following key technological problems: how to construct efficient computational methods when the number of physical parameters is relatively big, how to identify the geometric parameters,and how to identify the geometric parameters and the physical parameters at the same time, which are big challenges for us. Represented by resistivity well-logging and spontaneou
英文关键词: spontaneous potential well-logging;array lateral electric-Logging;inverse method;mathematical model;numerical simulation