Sand blower for separate-stratum fracturing

• Main Authors: MA JINLIANG, TIAN SHENGMIN, LYU XUANPENG, CHEN ZHIZHONG, WU XIAOFANG
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2014
• 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 blower for separate-stratum fracturing. The sand blower comprises an upper connector, a sand blower body, a slide sleeve, a ceramic sleeve nozzle and a steel ball. The upper connector is connected with the sand blower body in a threaded and sealed manner. The slide sleeve is connected to the inner cavity of the upper connector in a sealed manner through a shear pin. The ceramic sleeve nozzle is mounted in the annular cavity between the slide sleeve and the sand blower body. The upper end of the ceramic sleeve nozzle is pressed and fastened by the bottom of the upper connector. A limit rubber ring is disposed between the upper end of the ceramic sleeve nozzle and the bottom of the upper connector. The lower end of the ceramic sleeve nozzle is abutted against the step of the inner cavity of the sand blower body. The spraying hole of the sand blower body corresponds to the sand spraying hole in the ceramic sleeve nozzle. The steel ball is disposed in the ball seat at the upper