Impact type self-cleaning sand prevention device

• Main Authors: NIU YURU, GUO BINJIAN, XI XIN, GUAN JIUZHOU, ZHANG SHUAI, LANG BAOSHAN, LIU JIANGLING, FEI DAN, WANG SHUHUI, ZHU CHENGCHAO, KUANG XUGUANG, WANG GUANGSHUN, XIE JIAXI
• Format: Patent
• Language: Chinese; English
• Published: 19.12.2023
• 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 an impact type self-cleaning sand prevention device which comprises a coupling, a sand filtering pipe, a reducing piston, a central pipe and an impact vibrator, the top end of the coupling is connected with an oil pumping pipe column, the bottom end of the coupling is connected with the top end of the sand filtering pipe, the bottom end of the sand filtering pipe is connected with the top end of the central pipe, and the bottom end of the central pipe is connected with the top end of the impact vibrator. And the reducing piston is connected to the outer wall of the central pipe. Continuous and real-time removal of blockages in the sand filtering pipe can be realized through extension and retraction of an oil pumping pipe column in the up-stroke and down-stroke process of the oil well pump, and the infiltration capacity of the sand filtering pipe is kept. 本发明公开了一种冲击式自洁防砂装置，包括接箍、滤砂管、变径活塞、中心管、冲击振动器，所述接箍顶端与抽油管柱连接，底端与滤砂管顶端连接，滤砂管底端与中心管顶端连接，中心管底端与冲击振动器顶端连接，所述变径活塞连接于中心管外壁。本发明能够通过抽油泵上、下冲程过程中抽油管