相控声波测井仪器设计及资料处理方法

The Design and Data Processing of the Phase-Controlled Acoustic Logging

声波测井仪器在石油勘探开发中发挥着重要作用,但长期以来没有解决声波首波跳的问题,并且仪器的设计制造主要在引进的基础上进行一些改进,常规声波测井技术发展进程缓慢,没有形成自己的声波测井技术。经过大量的实验、计算,研究了相控声波测井仪器从设计、实验、研制的理论依据,从根本上解决声波首波跳的问题。在资料处理方面从声波二维谱的基础上对相控声波测井全波曲线进行解释,不仅可以得到地层的纵、横波以及Stoneley波时差,还可以研究孔隙结构和孔隙流体特征,进行气层识别、地层渗透特征分析等。该仪器是国内声波仪器的更新换代产品,具有国外新的声波测井仪器的优点和特性,具有良好的发展前景。

The acoustic logging tools play an important role in oil exploration.But the head-wave jump phenomenon remains unsolved.Because the lack of enough supports in theory and experiments,few advancements have been achieved in the customary acoustic log although some improvements have been made on the basis of the design of the imported tools.Depending on a great deal of experiments and calculations,this tool is well designed and capable of solving the head-wave jump problem completely.The full wave data obtained from the phase-controlled acoustic logging is interpreted on the basis of 2-D wave spectrum.Not only have the time delays of the P-wave,S-wave and the Stoneley-wave been obtained,but also the pore structure and fluid characteristics have been studied,which can be used in the gas-zone identification and permeability analysis.As a new generation of the acoustic logging instruments,this tool is comparable to its counterparts abroad and has a good prospect.