Research and development of the particle separation device in a particle impact drilling system

被引：0

作者：

Zhou, Aizhao ^{[1
,2
]}

Liu, Yongwang ^{[3
]}

Zhao, Jian ^{[3
]}

Xu, Yiji ^{[3
]}

Mao, Bingkun ^{[3
]}

机构：

[1] China University of Geosciences, Beijing

[2] No. 3 Huanghe Drilling Company of Shengli Oilfield Company, Sinopec, Dongying, 257064, Shandong

[3] China University of Petroleum, Qingdao, 266580, Shandong

来源：

Natural Gas Industry | 2014年 / 34卷 / 08期

关键词：

Capacity; Design; Experiment; Grading efficiency; Influencing factors; Particle impact drilling; Particle separation; Separation effect;

D O I：

10.3787/j.issn.1000-0976.2014.08.015

中图分类号：

学科分类号：

摘要：

Fast and efficient separation of broken particles is directly related to the efficiency in the process of particle impact drilling. For this purpose, this paper put forward a new idea of utilizing the centrifugal force of particle rotation and the air drag force of an external injected air flow to separate sound and broken particles. On this basis, we designed a particle separation device composed of a separation device and some induced draft fans. The separation effect and influencing factors of the separation device were studied in experiments through adjusting the motor rotation rate and air volume of draft fans. The following findings were obtained. (1) The grading efficiency and separation capacity will be decided by the steel particle dispersion; and a bigger force field can help create favorable conditions for better dispersion. (2) The faster the steel particles rotate in the separation device, the higher the grading efficiency of the separation device; the larger the particle size, the stronger the grading efficiency and capacity of the device. (3) The relative content of broken particles in the mixed particles affects the grading efficiency, specifically the less the broken particle content, the higher the grading efficiency will be. Experimental results also validated that the designed particle separation device can effectively separate the sound and broken particles. This study provides mechanical and theoretical support for the realization of particle impact drilling technology.

引用

页码：97 / 101

页数：4

共 12 条

[11] Chen X., Zhang Y., Wen R., A preliminary exploration of the particle impact drilling system, China Petroleum Machinery, 38, 5, pp. 8-10, (2010)
[12] Xu Y., Mao B., Zhao J., Principle analysis and structure design of particle grading device in particle impact drilling, Drilling & Production Technology, 35, 3, pp. 5-8, (2012)

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