沙漠地区微测井资料分析与方法研究

目前常用的表层结构调查技术较难清楚探明复杂地区的近地表结构,并且在实际生产过程中存在一些问题.通过建立低降速带模型并运用射线追踪与褶积方法进行正演,对生产中遇到的一些问题进行了较系统的分析与论证,结合经验对目前微测井采用的施工方法提出相应改进,12道1m近偏移距均匀分布与15m,20m远偏移距结合方式,优化微测井采集数据,精确解释速度与界面埋深,使井深设计与野外静校正量的求取更加精确,使基于理论模型的数据得到了更加准确的解释结果。此方法在复杂地区微测井解释中能够得到更加准确的近地表结构数据。

Micro-logging Data Analysis and Method Study in Desert Working Area

The most commonly used techniques of surface structure survey are insufficient for near surface structure in complex area and there are some problems in the field production process. With the establishment of low velocity layer model, we apply ray tracing and deconvolution to forward modeling and solve the problems in practice with systematic analysis and demonstration. According to working experience, we improve the current construction methods of microlog with appropriate proposals. Namely, 12 traces of 1 m near offsets are equally distributed and then combined with far offsets of 15 m and 20 in. This combination mode can optimize acquisition data of microlog, precisely interpret velocity and burial depth of interface . Therefore well depth design and field statics calculation will be more accurate. The data based on the results of theoretical models will also be interpreted more precisely. This method applied in microlog interpretation of complex area can bring more favorable near surface structural data.