Development of the experiment detection technique

Abstract

Three detection techniques, namely, acoustic, resistivity, and time domain reflectometry (TDR) methods, are available here to measure the physical properties of gas hydrate-bearing sediments. These techniques have been developed from repeated experiments and prove suitable for tests of gas hydrate. The acoustic detection technique contains a traditional acoustic detection and a new kind of bender element technique, which is used to measure acoustic velocities of hydrated consolidated sediments and hydrated unconsolidated sediments, respectively. A precision resistance testing system is developed to monitor chemical reactions and also study dynamic equilibrium according to the frequency response characteristics of the system. TDR is successfully introduced in detecting hydrate saturations in real time during hydrate formation and dissociation in sediments. Such technical innovation can guarantee smooth experimental research. In particular, the TDR technique, combined with other methods, provides a very promising approach to these experiments. It can detect, in real time, hydrate saturation in sediments and lets us know the quantitative relationships between the various physical parameters and hydrate saturation.