Pumping packer

• Main Authors: HUANG DAN, SHI PING, SUN TINGHONG, SU YAN, GAO FENGSHAN, ZHAO JINXIU, YANG FEN, FEI XUEDONG, XU JING, DU HAIWANG, SHI HONGYUAN, SHI HONGYU, YOU XINGHAI, YAN HAIFENG
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2012
• 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 the technical field of sand washing and bailing for an absorption well, in particular to a pumping packer, which is matched with the sand washing and bailing method for the absorption well. A slotted tube of the packer is respectively welded with an upper spacer ring, a spacer ring and a lower spacer ring, a central tube is arranged in the slotted tube, a plurality of flow changing holes are uniformly arranged under a limiting step on the top part of the central tube, and a gland is welded with the central tube through a clearance of the slotted tube; the upper end face of the upper spacer ring is provided with a steel ring slot, the steel ring slot is internally provided with a circle of flow guide holes with the same spacing along the axial direction, and the flow guide holes penetrate downwards through an upper rubber cylinder, the spacer ring, a lower rubber cylinder and the lower spacer ring; and the lower end face of the gland is provided with a steel ring, and the steel rin