Oil pumping polish rod sealer

• Main Authors: LIU CHONGYONG, LIU GUANGXI, LIU DONG, ZHOU XIAOYI, ZHANG SHAOCHEN, LI BINKUI, TONG YUBAO, SANG LINXIANG, CONG PEIZHEN, WEI XINCHUN, WANG MEICHENG, FAN YUXIN
• Format: Patent
• Language: English
• Published: 08.07.2015
• 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 provides an oil pumping polish rod sealer. The oil pumping polish rod sealer comprises a sealer box body, at least one gate device and gate valves, wherein a polish rod accommodating cavity for accommodating a polish rod is arranged in the sealer box body, each gate device is detachably connected with the sealer box body, each gate device comprises two metal gates, each metal gate is movably arranged along an extending direction that is vertical to the polish rod accommodating cavity, moving channels that are in one-to-one correspondence to the two metal gates are designed in side walls of the sealer box body, the gate valves are used for sealing the moving channels that are in one-to-one correspondence to the two metal gates of each gate device, and at least one gate device is correspondingly provided with the gate valves. By means of the technical scheme, the moving channels of the metal gates are sealed firstly through the gate valves before the gate devices are replaced, isolation of the moving channels from the polish rod accommodating cavity can be achieved, and thereby, the gate devices can be replaced under pressure.