MRIL_Primer回波信号生成关键技术

Gordian Technique of MRIL_Primer Echo Signal Form

根据MRIL_Primer测井数据的解剖分析与核磁测井数据处理方法的深入研究,弄清了该测井仪的测量方式,原始测量信息与数据记录方式,提出了从时间域原始测量信号数据处理到深度域回波信号曲线的一系列关键技术与7个步骤。这些关键技术包括如何确定两道正交回波信号、计算相位角、旋转前叠加、旋转处理、旋转后叠加、时间域差分、各组回波拆分、时深转换与等间距深度采样。根据这些关键技术,在微机上编制了从原始测量数据着手处理的核磁测井解释软件系统mrpps,mrpps改进了哈里伯顿DPP处理软件的一些不足之处。通过实际资料处理,在模拟哈里伯顿DPP处理软件参数相同的情况下,两者的处理结果完全一致。

According to the analysis of MRIL_Primer logging data and the thorough research of NMR logging data processing method, this paper figures out the survey method, initial measurement information and data record method, and proposes a series of key techniques and 7 steps from initial measurement signal processing in time domain to echo signal curve in depth domain. These essential techniques include how to determine two traces of orthogonal echo signal and calculate phase angle, steak before rotating, rotation processing, steak after rotating, difference in time domain, separation of echoes, time-depth conversion and equally spaced depth sampling. Based on these essential techniques, we establish NMR logging explanation software system ＂ mrpps＂ on the microcomputer which begin from the process of initial measurement data process. This system improves the process software DPP in some deficiencies. Through the actual data processing, we obtain completely consistent processing result with DPP processing software when simulates the same processing parameter with it.