Principle: Based on Rayleigh scattering to capture acoustic signals along the wellbore. Application: DAS is used to detect and locate leaks, monitor cement integrity, and identify mechanical issues within the well. Vertical seismic profiling (VSP) using DAS An initial test DAS-VSP survey using the permanent sensor cables installed at Ketzin had revealed that superior data quality can be achieved with sensor cables cemented in place compared to other installation methods (Daley et al. Temperature data can be observed along the well through time, providing critical information for. May contain several fibers for different sensing techniques. Mechanical coupling determined by annular fill (gas, liquid, cement), and well completion (number of casing strings, cementing). 5 wells: 1 injection, 3 deep and 1. Logging, also called geophysical logging or mine geophysics, is a method of measuring geophysical parameters by using geophysical properties such as electrochemical properties, conductive properties, acoustic properties, and radioactivity of rock formations.
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