Connecting device for polish rod sealer of thickened oil double-tube well

• Main Authors: XIAO XIANDONG, LI BIN, LIU YONG, LIU JIANXIN, YIN HAI, LUO XIANGJIE, YANG YUYAO
• Format: Patent
• Language: Chinese; English
• Published: 21.02.2020
• 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 connecting device for a polish rod sealer of a thickened oil double-tube well. The device comprises a wellhead six-way joint, sealing baffle rings are installed in two threaded inner holes in the top of the wellhead six-way joint, a pressing disc is arranged above the sealing baffle rings, two anti-rotation pressing hoops arranged on the outer walls of the sealing baffle rings in a sleeving mode are pressed downwards at the bottom of the pressing disc, high-temperature sealing rings are arranged below the anti-rotation pressing hoops in a cushioned mode, and thepressing disc is connected with the wellhead six-way joint. The connecting device for the polish rod sealer of the thickened oil double-tube well is reasonable in design; when a well needs to be repaired or tested, the polished rod sealer or the auxiliary pipe plug can be separated from a wellhead only by detaching the bolt of the upper pressure plate, so that a series of problems caused by threadgluing are avoided, the l