煤炭工程 ›› 2024, Vol. 56 ›› Issue (6): 73-79.doi: 10. 11799/ ce202406012

• 施工技术 • 上一篇    下一篇

台格庙矿区钻井法凿井钻进工艺可行性研究

王旭东,乔文俊,赵 海,王 鹏,董俊亮   

  1. 神华新街能源有限责任公司,内蒙古 鄂尔多斯 017200
  • 收稿日期:2023-09-22 修回日期:2023-11-13 出版日期:2023-06-20 发布日期:2025-01-08
  • 通讯作者: 王鹏 E-mail:bmcsong@126.com

Feasibility analysis of drilling method with blind shaft sinking technology in Tai-gemiao mining

  • Received:2023-09-22 Revised:2023-11-13 Online:2023-06-20 Published:2025-01-08
  • Contact: wang peng E-mail:bmcsong@126.com

摘要:

神华新街台格庙矿区一井东部风井井筒设计成井深度857.5m,设计净直径7.0m,设计井壁厚度850mm,以此为工程背景,从地质特征、工程条件、装备能力、钻井分级工艺等方面,分析了采用竖井钻机钻井法凿井钻进工艺的可行性。研究了拟建井筒穿越的地层及其岩石力学特性,基岩厚度将达到870m,基岩占比达到99.3%;基于地质条件、井筒功能和井筒设计参数,计算得出钻井深度将达875m、钻井直径为10.2m,并梳理了全岩地层深大直径井筒机械破岩钻进面临的难题;对比分析了东部深厚冲积地层和西部厚基岩地层钻进分级工艺,分析确定了“一扩成井” 钻进工艺具有可行性, 超前钻孔直径范围为6.5~7m,扩孔钻进直径为10.2m。

关键词: 矿井建设 , 厚基岩地层 , 竖井钻机钻井法 , 机械破岩 , 分级钻进

Abstract:

The blind shaft sinking method as a mechanized, high degree of automation, good safety construction technology. It has the significant advantage of realizing unmanned and intelligent drilling. Taking the east wind shaft in Taigemiao mining area of Shenhua Xinjie as the engineering background, the design shaft depth is 857.5m, the design net diame-ter is 7.0m, and the design shaft wall thickness is 850mm. The feasibility of using blind shaft sinking method is ana-lyzed through geological characteristics, engineering conditions, equipment capacity and drilling classification tech-nology. The stratum and rock mechanical characteristics of the proposed eastern wind shaft are analyzed. The thickness of the bedrock will reach 870m and the proportion of the bedrock will reach 99.3%.Based on geological conditions, wellbore functions and wellbore design parameters, the drilling depth will reach 875m and the drilling diameter will be 10.2m.The problems faced by deep and large diameter wellbore drilling in whole rock formation are sorted out.The drilling grading process of deep alluvial formation in the east and thick bedrock formation in the west is compared and analyzed, and the feasibility of "one expanded well" drilling process is determined. The diameter of advance drilling is 6.5~7m, and the diameter of reaming drilling is 10.2m. It is technically feasible to sinking shaft of Taigemiao mining area with blind shaft sinking method. It provides a reference for the demonstration of the subsequent industrial test scheme and the comparison and selection of drilling process schemes in similar formations.

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