不需起拔套管的孔内扩径钻具设计

燕建龙, 周云, 张绍和, 孙平贺

燕建龙, 周云, 张绍和, 孙平贺. 不需起拔套管的孔内扩径钻具设计[J]. 煤田地质与勘探, 2016, 44(3): 132-135. DOI: 10.3969/j.issn.1001-1986.2016.03.026
引用本文: 燕建龙, 周云, 张绍和, 孙平贺. 不需起拔套管的孔内扩径钻具设计[J]. 煤田地质与勘探, 2016, 44(3): 132-135. DOI: 10.3969/j.issn.1001-1986.2016.03.026
YAN Jianlong, ZHOU Yun, ZHANG Shaohe, SUN Pinghe. A borehole reamer without lifting casing[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(3): 132-135. DOI: 10.3969/j.issn.1001-1986.2016.03.026
Citation: YAN Jianlong, ZHOU Yun, ZHANG Shaohe, SUN Pinghe. A borehole reamer without lifting casing[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(3): 132-135. DOI: 10.3969/j.issn.1001-1986.2016.03.026

 

不需起拔套管的孔内扩径钻具设计

基金项目: 

湖南省自然科学基金(07JJ6089)

详细信息
    作者简介:

    燕建龙(1965-),男,陕西潼关人,教授级高级工程师,从事地质工程勘察设计与施工技术和管理工作.E-mail:yanjianlong6511@sina.com

  • 中图分类号: P634.4

A borehole reamer without lifting casing

Funds: 

Natural Science Foundation Project of Hunan Province of China(07JJ6089)

  • 摘要: 针对下套管护壁后,下部地层出现新的缩颈、垮塌问题,设计了一种不需起拔套管的孔内扩径钻具。描述了该扩径钻具的结构和工作机理,其扩孔尺寸可通过调节滑心滑块的尺寸来改变;导出了冲洗液量与金刚石切削块上的钻压之间的理论公式,为选择合理的扩孔钻进规程提供了一种参考依据。野外应用表明,该扩径钻具能够满足现场扩孔要求,减轻工人劳动强度,提高钻进时效。
    Abstract: Casing drilling technology is essential to borehole which can reduce shrinkage, collapse and save the cost. It is very essential in the soft and heterogeneous layers. A new borehole reamer without lifting casing is introduced in this paper. The drilling tool is composed of drilling pipe joint, sliding block, diamond cutting block and guiding rod. The authors discuss structure and working mechanism of the new reamer. Diameter of the reamer can be changed by sliding core and sliding block. This characteristic is different from conventional reamer. The matching calculating between drilling fluid volume and the weight of diamond cutting block has been done through hydraulics method. This formula can provide mathematics basis for the reamer design. The results of the field application show that this borehole reamer can meet the reaming requirements, release the labor intensity and improve drilling efficiency.
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  • 被引次数: 0
出版历程
  • 收稿日期:  2014-12-30
  • 网络出版日期:  2021-10-22

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