Centrealoil--Nano decompression and augmented injection technology for low-permeability reservoir

In water flooding development of low permeability reservoir, the pressure of water injection wells in some blocks rises year by year ,every year through fracturing and acidizing can solve the problem of part of high-pressure under injection wells, but there are still a number of measures a short-acting or invalid water injection wells, the corresponding well group reservoir energy decreases significantly, through the mass of water injection well fracturing may not be able to improve the whole block recovery. With the extension of water injection exploitation time, through long-term water flooding, there will be more and more water injection wells are showed serious high-pressure under injection, because of rock pore surface hydration layer thickening and makes the adsorption resistance enhanced. Repeated measures will increase the transformation cost and  bring irreversible destruction to the reservoir.

My company and the university after two years of cooperation to form a stable water soluble special nanometer decompression and augmented injection liquid, the special nano materials can inhibit the swelling of clay particles, change the wettability of rocks, improve the relative permeability of water, displace and adsorb the surface water film of low permeability pore, expand the effective aperture, reduce the flow resistance in the injected water in the pores. By supporting technology research, the nano decompression and augmented injection technology for low-permeability reservoir has formed, it can solve the problem of decompression and augmented injection of long-term high-pressure under injection wells, extend the validity of the measures, decrease the times of repeated measures, restore well group reservoir energy, improve the overall regional recovery. The technology in the application of water wells is more than 10 wells, and has obvious augmented injection effect.

Characteristics:

①The product is water soluble, good adaptability to reservoir.

②The product is uniform adsorption on rock surface, can reduce the flow resistance in the injected water in                 the pores, and has a remarkable decompression and augmented injection effect.

③The product has a remarkable effect of inhibit clay swelling.

④The product has strong adsorption capacity, resistance to erosion, long effective time.

⑤The product doesn't damage the reservoir, green development.

⑥Without special equipment, construction is convenient and quick.

⑦It works on multiple measures ineffective high-pressure under injection wells of low permeability reservoirs.

                                        Centrealoil