Impeller-driven axial force impactor for well drilling

• Main Authors: ZHAO PEI, YANG JIPING, WANG YISHAN, LYU SHUANG, TIAN KUI, GUO KEYOU, ZHOU JUNRAN, DONG HONGZHENG, HE WEIBIN
• Format: Patent
• Language: Chinese; English
• Published: 11.07.2023
• 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 impeller-driven axial force impactor for well drilling comprises an upper connector, a middle body, a lower connector, an impact hammer, an impeller shaft and a reversing sleeve, a flow dividing hole plate comprising a plurality of first flow guiding holes is arranged in the middle body, and the impeller shaft is sequentially provided with an impeller, a second flow guiding hole, an upper flow dividing hole and a lower flow dividing hole from top to bottom; the reversing sleeve is arranged on the outer side of the lower end of the impeller shaft in a sleeving mode, an upper reversing hole corresponding to the upper flow dividing hole and a lower reversing hole corresponding to the lower flow dividing hole are formed in the reversing sleeve, drilling fluid enters the impeller through the first flow guiding hole to push the impeller to drive the impeller shaft to rotate, and the drilling fluid enters the impeller shaft through the second flow guiding hole; and along with the continuous rotation of the impel