Apparatus for conducting acoustic research in an underground formation with a wellbore through it and for acoustic signal attenuation, and methods for attenuating acoustic energy transmitted throughout an acoustic tool and for transmitting acoustic energy throughout an acoustic tool

摘要

"APPARATUS FOR PERFORMING ACOUSTIC RESEARCH FOR ACIDENTAL ACETIC ENERGY ACQUISITION FOR ACCESSORIES FOR ACIDENTAL ACCESSORIES " The acoustic isolator assembly of the present invention comprises an elongated cylindrical body suitable for connection to an acoustic arrangement and subsequent arrangement within a wellbore. According to one embodiment of the present invention, the acoustic insulator comprises a plurality of cylindrical insulating modules which are arranged coaxially to form the tool body. Each isolating module comprises a spring disposed within an outer housing. Separate isolating modules are attached to each other by connecting rods around which a plurality of metal spacers are arranged. The isolator module further comprises mechanical limiters that limit spring deflection during high axial loading. These features allow the acoustic isolator assembly to support high loading that can be applied during logging operations. Therefore, isolator modules can withstand high compression and tensile loads without permanent spring deformation.