Sand washing pen point

• Main Authors: Chen Shuai, Yue Zhenbang, Qiu Yi, Yang Peng, Lyu Qingmin, Su Junhui, Liu Peng, Ji Dongbiao
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2016
• 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 utility model discloses a sand washing pen point, it includes hollow nib body, it has relative upper end and a lower extreme, be provided with the intercommunication groove on the nib body inner wall, wear to establish the nib body is inside can be relative the nib that the nib body removed, it has relative upper end and lower extreme, and its upper end is supported and is leaned on inside the nib body, its lower extreme is worn out the nib body, be provided with the clearing hole in the nib, the clearing hole is the blind hole, its with the lower extreme of nib is linked together, still be provided with on the nib lateral wall with the feed liquor hole that the clearing hole is linked together, the setting is in the gland of nib body lower extreme, it is used for sealing the annular space of nib body and nib, the nib body with annular space between the nib is provided with the elastic component, its both ends can be respectively with nib and gland offset tightly. Sand washing pen point application scope