High-temperature deep well double-pipe water injection pipe column

• Main Authors: WANG PENGHUA, HE YUN, WEI MIN, CUN XIHONG, MU TINGHUA, REN ZHAOLIN
• Format: Patent
• Language: Chinese; English
• Published: 23.04.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a high-temperature deep well double-pipe water injection tubular column, which comprises an inner water injection tubular column and an outer water injection tubular column, the lower end of the outer water injection tubular column and the inner water injection tubular column are sealed by a first-stage shunting water distribution unit, and injected water is shunted by a constant-pressure screen pipe; an inner pipe safety valve and a first sealing plug are arranged in a first water injection inner pipe in the inner water injection tubular column, and a second-stage flow dividing water distribution unit formed by inserting a third sealing plug and a second sealing working barrel is connected and installed in the inner water injection tubular column between a first oil layer and a second oil layer. A permanent packer capable of being drilled and milled is arranged in the inner water injection tubular column below the second-stage diversion water distribution unit, and the lower end o