Abstract
The development of Methane Hydrate (MH) recovery system has recently been brought to public attention. Although many systems have been proposed, the production technology has not yet been established. In the present study, we focused on a gas lift system as one possible recovery system and the following experiments and numerical analysis were conducted. (1) Laboratory scale experiments. (2) Measurement and prediction of MH decomposition rate. (3) Three-phase flow analysis in the recovery pipe in full-scale system. (4) Optimization of inlet shape at the bottom of the recovery pipe. From these experiments and numerical analysis, the possibility and applicability of the gas lift system for the MH recovery system were examined.
