METHOD TO INJECT CARBON DIOXIDE Russian patent published in 2013 - IPC B65G5/00 E21B43/34 

FIELD: packing industry.

SUBSTANCE: invention relates to the method of carbon dioxide (CO₂) storage in a porous and permeable underground reservoir bed) and in particular, to the method for injection of CO₂ into a hydrocarbon reservoir for its storage. The concept of the invention is as follows: the method includes the following stages: (a) extraction of a produced fluid flow from a development well, which contains produced hydrocarbons, water and CO₂; (b) direction of the produced fluid flow to a process facility, where a steam phase flow is separated from this flow, containing carbon dioxide and volatile hydrocarbons; (c) compression of the produced steam phase flow to the pressure above the maximum pressure, when two phases of gas and liquid may coexist, for the composition of the produced steam phase flow; (d) cooling of the compressed flow with formation of the cooled flow in a dense phase condition; (e) direction of the CO₂ flow towards the injection equipment, which arrives from the side and may be in a liquid phase or in a supercritical condition; (f) mixing of the cooled flow from the stage (d) with the flow of CO₂ arriving from the side to form a combined flow, which represents a flow of a dense phase substance; and (g) injection of the specified combined flow into the hydrocarbon reservoir via an injection well.

EFFECT: increased efficiency of the method.

22 cl, 2 dwg