Sucker-rod pump closed circulation watering paraffin-prevention device

• Main Authors: DONG MEI, QIN YANCAI, GAO QIANG, XU FUGANG, ZHUANG DONG, WANG HUI, YANG HUCHUAN, CHI HONGLI
• Format: Patent
• Language: Chinese; English
• Published: 01.06.2016
• 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 invention discloses a sucker-rod pump closed circulation watering paraffin-prevention device. The sucker-rod pump closed circulation watering paraffin-prevention device comprises an automatic heating device, a circulating pump, a hollow sucker rod and a hollow rod three-way device. By means of the hollow rod three-way device on a hollow smooth sucker rod, a circulating water inlet and a circulating water outlet are separated. The two ends of the automatic heating device are connected between the circulating water inlet and the circulating water outlet through a pipeline. The circulating pump is connected to the part, between the automatic heating device and the circulating water inlet, of the pipeline. An inner circulating pipe is disposed in the hollow sucker rod. The upper end of the inner circulating pipe is connected with the circulating water inlet, and the lower end of the inner circulating pipe extends to the bottom of the hollow sucker rod. A filter is connected to the part, between the automatic