Water injection packer

• Main Authors: NING YISHENG, SHI ZHENGANG, WANG PENG, LI YING, LIU CHUANJUN
• Format: Patent
• Language: Chinese; English
• Published: 15.04.2009
• 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 relates to a water injection packer, which comprises an upper joint, an inner tube and a lower joint, which are linked in sequence. A sheath is sleeved outside the upper joint; a well cleaning piston is arranged between the sheath and the inner tube; the lower part of the sheath is linked with an upper rubber cylinder; a rubber cylinder is arranged in the upper rubber cylinder joint and the lower rubber cylinder joint; a rubber cylinder liner tube is positioned in the rubber cylinder; the upper part of the rubber cylinder liner tube is linked with the upper rubber cylinder joint, and the lower part is linked with the upper part of the well cleaning joint; the lower part of the well cleaning joint is connected with the upper part of a check valve; the lower part of the check valve is arranged outside the lower joint; a pressure transmission hole is positioned at the upper part of the inner tube; a well cleaning channel is arranged between the inner tube and the rubber cylinder liner tube; the