Comparative Assessment of Advanced Gay Hydrate Production Methods

M. D. White ; B. P. McGrail ; S. K. Wurstner

关键词: CARBON DIOXIDE;    CARBON DIOXIDE INJECTION;    FOREIGN EXCHANGE RATE;    GAS HYDRATES;    GEOLOGIC DEPOSITS;    HYDRATES;    HYDROCARBONS;    NATURAL GAS;    PETROLEUM;    PRODUCTION;    SIMULATION;   

DOI  :  10.2172/973071
RP-ID  :  None
PID  :  OSTI ID: 973071
Others  :  TRN: US201006%%698

美国|英语

来源: SciTech Connect

【 摘 要 】

Displacing natural gas and petroleum with carbon dioxide is a proven technology for producing conventional geologic hydrocarbon reservoirs, and producing additional yields from abandoned or partially produced petroleum reservoirs. Extending this concept to natural gas hydrate production offers the potential to enhance gas hydrate recovery with concomitant permanent geologic sequestration. Numerical simulation was used to assess a suite of carbon dioxide injection techniques for producing gas hydrates from a variety of geologic deposit types. Secondary hydrate formation was found to inhibit contact of the injected CO{sub 2} regardless of injectate phase state, thus diminishing the exchange rate due to pore clogging and hydrate zone bypass of the injected fluids. Additional work is needed to develop methods of artificially introducing high-permeability pathways in gas hydrate zones if injection of CO{sub 2} in either gas, liquid, or micro-emulsion form is to be more effective in enhancing gas hydrate production rates.