RU96112648A - METHOD FOR DEVELOPING A WELL WITH A PLASTIC FLUID LEVEL BELOW BELOW THE PUMP AND COMPRESSOR PIPE BASIS IN THE CONDITIONS OF AN ABNORMALLY LOW PLASTIC PRESSURE - Google Patents

Claims (1)

A method of developing a well with a level of formation fluid below the shoe of the tubing under conditions of abnormally low formation pressures by introducing carbon dioxide emitting gas into the well, characterized in that the surfactant is additionally pumped into the well in an amount sufficient to produce stable foam from the formation fluid, close the well and create excess pressure at the wellhead, which meets the following condition

Where
P _y pressure at the wellhead, MPa;

- saturation pressure for carbon dioxide at a temperature, t, for a particular well in the interval of finding a column of water, MPa;
P _PL - reservoir pressure, MPa;
k is an empirical coefficient, determined by geological and technical data for each field, characterizing repression on the reservoir, causing absorption, rel. units
moreover, a blowing agent and acid are sequentially introduced into the tube space in stoichiometric amounts, the annulus is connected to the high-pressure gas line, and the tube space is opened to the flare line until the foam exit ceases.