Expanding type water injection well packer

• Main Author: SONGPING LI
• Format: Patent
• Language: English
• Published: 26.01.2005
• Edition: 7
• 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 an expanding type water injection well sealing device for partition, which is composed of an upper contact, single-action valves, a double-action valve, a middle ring, a sealing rubber cylinder, a central tube and a lower contact, spherical seats are arranged at a valve core end in the single-action valve and a valve body corresponding to the valve core end; rigid spheres are arranged in the spherical seats; spherical seats are arranged at a valve core end at the lower end valve of the double-action valve and a lower valve body corresponding to the valve core end; rigid spheres are arranged in the spherical seats. The rubber sealing at the original valve core end corresponding to the valve body is altered to sphere rigid sealing of the utility model by increasing the number of the arranged single-action valve; the increased number of the arranged single-action valves correspondingly increases water inlet channels, shortens the release time of a rubber cylinder, and solves the problem that a water nozzle above 8 mm used as sealing needs temporary water nozzle blocking. The utility model is suitable for all partition type water injection and gathering injection wells of 51/2 sleeves and water blocking wells using machines of the 51/2 sleeves.