WELL OPERATION METHOD Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: in process of preparatory operations to provide for maintenance of temperature mode in tubing column, temperature of bed fluid is determined, at which it is still fluid. Then during equalization of environment temperatures in inner body of tubing column and rocks behind operation column geotherm is taken for distribution of temperature along shaft of operation well. On basis of geotherm and temperature of extracted bed fluid determined for current well, lower limit is set in tubing column, after passing of which extracted bed fluid preserves its fluidity. Length and temperature characteristics of temperature screen are determined on basis of said limit, which screen is formed from a portion of tubing column, composed of thermo-insulated tubing columns with at least one elongated heat emitter, which can be positioned on outer surface of tubing column and/or in tubing column. Lower limit of temperature screen is positioned in tubing column at same level with or a bit lower than the limit, after passing of which extracted bed fluid still preserves its fluidity. After that at least one elongated heat emitter is connected to temperature energy source and liquid in tubing column is heated up until reaching temperature being no less than temperature at which bed fluid still preserves its fluidity. Well is than launched in operation mode. temperature of bed fluid coming from the well is kept at level being at lest 0.2 percents higher than temperature at which extracted bed fluid still preserves fluidity.

EFFECT: higher efficiency, lower costs.

12 cl, 1 ex, 2 tbl, 2 dwg