REPLACEMENT OF METHANE IN THE HYDRATE BED BY LIQUID CARBON DIOXIDE

A mathematical model is presented and numerical solutions have been constructed for the problem on injecting liquid carbon dioxide into a bed consisting of a skeleton, methane hydrate, and pores fi lled with methane. It is assumed that the process has two stages. At the fi rst, short stage, displacement of the free gas from the pores takes place. At the second, longer stage, replacement of methane by carbon dioxide in the hydrate state and its dissolution occur. The fl ow rates of carbon dioxide and methane, as well as their mass in the considered period of time have been considered.
   
Author:  V. Sh. Shagapov, Yu. A. Yumagulova and O. A. Shepel′kevich
Keywords:  fi ltration of liquid carbon dioxide, piston displacement of free gas, replacement of methane, liquid carbon dioxide, methane dissolution, methane hydrate, carbon dioxide hydrate, hydrate formation kinetics
Page:  1353