METHOD FOR DISPOSAL OF CO (VERSIONS) Russian patent published in 2016 - IPC B65G5/00 E21B47/06 E21B47/10 

FIELD: ecology.

SUBSTANCE: group of inventions intended for use in underground storage of CO₂ and other harmful gases, as well as environmental protection. In first version of method for pumping CO₂ trap of water-bearing formation with thermo-baric parameters promoting prolonged burial of CO₂ in liquid state is selected. Wells are drilled in dome part of trap structure. Liquid CO₂ is pumped in central well and in lowering of contact of “liquid CO₂-water” CO₂ is pumped to peripheral wells. Control of formation pressure dynamics with simultaneous monitoring of occurrence of liquid CO₂ in observation wells. Pumping of liquid CO₂ is terminated when detecting of it in observation wells, as well as when trap pressure corresponding to maximum allowable formation pressure is achieved. Control of lateral tightness of trap is carried out by means of observation wells located near closing contour line of trap, and in trap vertical line is by control wells arranged on overlying beds. In second version of method gaseous CO₂ is pumped. At same time dynamics of reservoir pressure is controlled using bottom hole pressure gauges. When pressure in trap reaches value corresponding to liquid aggregate state of CO₂, pumping of CO₂ is continued already in liquid state in near-contact trap areas, controlling dynamics of reservoir pressure using bottom hole pressure gauges.

EFFECT: high reliability of storage and reduction of costs for its creation.

2 cl, 6 dwg