偶极声波测井仪器及其在缅甸D区块的测井应用

Dipole Acoustic Logging Tool and Its Application in D Blocks in Myanmar

缅甸地区随着勘探开发测井作业深入,偶极声波测井成为了测井作业重点项目。论述了慢速地层测量横波的由来,以及偶极声波测井仪(Wave Sonic)的特点、仪器工作模式、测井数据采集方法。分析了缅甸D勘探区块YAxx井偶极声波成功的测井应用,阐述了在缅甸D勘探区块偶极的发射频率应该比西南地区测井工作频率低,选用1.2k Hz的工作频率适宜。偶极声波测井比常规纵波测井能获取更多地质资料,该方法为缅甸D区块,尤其是新区块在评价地层渗透性、分析地层各向异性、钻井工程应用等方面发挥着极其重要的作用。

With the intensive exploration and development in Myanmar,dipole acoustic logging has been the major project of logging operation. This article discusses the origin of transverse wave measurement in slow formation,the instrument characteristics of dipole sonic tool（ Wave Sonic）,the working patterns of the instrument and the data collecting methods of logging. It also narrates the successful logging application of dipole sonic measurement used in YAxx well in D block in Myanmar,elaborates that the emission frequency of dipole in D exploration area in Myanmar should be lower than the working frequency of logging in the area of Southwest,China. Therefore,working frequency of 1. 2k Hz is appropriate. There would be more geological data obtained through dipole acoustic logging than conventional wave logging for D block in Myanmar,especially those new blocks,which has very important effect on evaluating the formation permeability,analyzing anisotropy,drilling engineering applications and so on.