Pull-discharging type universal oil drip

• Main Authors: WEN ZHEHAO, HU ZHENMING, OU LIANGUI
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2009
• 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 pull type oil drain device capable of effectively avoiding failure of opening the oil drain device, which is structurally characterized in that an upper joint 1 is connected with a pull rod 3, an oil drain device body 4 and a lower joint 8 connected with the lower end of the oil drain device body 4 are sleeved on the pull rod 3, a shear pin 5 is radially arranged on the outer wall of the oil drain device body 4, a shear ring 6 engaged with the shear pin 5 is arranged close to the oil drain device body, and a pull ring 7 is connected to the pull rod below the shear ring 6. When the pull type oil drain device capable of effectively avoiding failure of opening the oil drain device is used in site construction, a fixing assembly is stringed between a third oil pipe and a fourth oil pipe on a pump, and a traveling assembly is connected between a first oil pumping rod and a second oil pumping rod on the pump. an oil pump piston with a diameter lower than Phi 57 mm can pass through a p