US 11,927,077 B2
High-frequency composite impactor
Jialin Tian, Chengdu (CN); Lanhui Mao, Chengdu (CN); Yanniu Ren, Chengdu (CN); Lin Yang, Chengdu (CN); Haolin Song, Chengdu (CN); Bo He, Chengdu (CN); Jun Li, Chengdu (CN); Lei Cha, Chengdu (CN); Zhe Zhang, Chengdu (CN); and Yu Wei, Chengdu (CN)
Assigned to Southwest Petroleum University, Chendu (CN); and Sichuan Xieming Technology Co., Ltd., Chengdu (CN)
Filed by Southwest Petroleum University, Chengdu (CN); and Sichuan Xieming Technology Co., Ltd., Chengdu (CN)
Filed on Sep. 26, 2022, as Appl. No. 17/935,487.
Claims priority of application No. 202210967533.1 (CN), filed on Aug. 12, 2022.
Prior Publication US 2024/0052705 A1, Feb. 15, 2024
Int. Cl. E21B 4/16 (2006.01); E21B 4/14 (2006.01)
CPC E21B 4/16 (2013.01) [E21B 4/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A high-frequency composite impactor comprising a high-frequency axial impact assembly, a torsional impact assembly, and a lower joint, wherein:
the high-frequency axial impact assembly includes: an upper self-excited oscillation cavity, a lower self-excited oscillation cavity, an adjustment block, and a lock nut;
the upper self-excited oscillation cavity has an upper end configured with an arc flow channel port, and a lower end configured with a conical end face to form a fluid inlet, and four circumferential positioning holes;
the lower self-excited oscillation cavity has an inner wall and a lower end configured with a conical flow channel port forming a groove structure with the inner wall;
the adjustment block is between the lower self-excited oscillation cavity and the lock nut;
the lock nut has an inner wall with a hexagonal channel and an external thread;
the torsional impact assembly includes: an upper end cover, a lower shell, a pendulum, a reversing switch, a lower end cover, a nozzle, a connecting block, and a retaining ring;
the lower shell is between the upper end cover and the lower end cover, connected by screws;
the nozzle is inside the lower end cover to form a torsional impact part;
the connecting block is between the lower joint and the lower end cover; and
the retaining ring is between the lower joint and the connecting block.