软煤气动螺杆钻具定向钻进技术与装备

张杰; 王毅; 黄寒静

doi:10.3969/j.issn.1001-1986.2020.02.007

软煤气动螺杆钻具定向钻进技术与装备

doi: 10.3969/j.issn.1001-1986.2020.02.007

基金项目:

国家科技重大专项任务（2016ZX05045-003-002）

详细信息

第一作者:
张杰,1983年生,男,湖北黄冈人,副研究员,研究方向为煤矿井下钻探新技术与装备研发.E-mail:zhangjie@cctegxian.com

中图分类号: TE254.3
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- 文章访问数: 163
- HTML全文浏览量: 10
- PDF下载量: 29
- 被引次数: 0
出版历程
- 收稿日期: 2019-11-13
- 修回日期: 2020-02-06
- 发布日期: 2020-04-25

Directional drilling technology and equipment of pneumatic screw motor in soft seam

Funds:

National Science and Technology Major Project(2016ZX05045-003-002)

摘要

摘要: 针对软煤钻进成孔深度浅、钻孔轨迹不可控、易出现瓦斯抽采盲区等问题，发明了气动螺杆钻具定向钻进技术，开发了由气动螺杆钻具、窄体定向钻机、随钻测量系统等组成的煤矿井下气动定向钻进技术装备。其中，气动定向钻进工艺和完孔技术，解决了松软煤层顺层定向钻孔长距离安全成孔和可靠护孔难题。在淮南某矿进行试验，试验钻孔30个，最大孔深300 m，平均见煤率92.9%，并全孔段安设筛管；钻孔抽采瓦斯纯量32万m³，试验区域煤巷平均掘进效率9.3 m/d，实现覆盖区域煤层安全高效回采。该技术的成功研发探索出软煤横穿工作面递进式瓦斯治理新模式。
- 软煤 /
- 瓦斯治理 /
- 气动螺杆钻具 /
- 定向钻进 /
- 筛管完孔 /
- 淮南
Abstract: Aiming at the drilling problems of shallow depth, uncontrollable trajectory and blind area of extraction in soft coal seam, the directional drilling technology of pneumatic screw motor was invented, and the directional drilling equipment consisting of pneumatic screw motor, narrow structure directional drilling rig and MWD system were formed. The air directional drilling technology and hole-completion technology were studied and developed. The technology of drilling and hole-completion solves the problem of long-distance safe drilling and hole protection of directional drilling along soft coal seam. The technology has been successfully tested in a coal mine, Huainan, with 30 test boreholes with a maximum depth of 300 m, an average of coal-drilling rate of 92.9%, and screen pipes installed in the whole hole section, extraction gas volume of boreholes is 320 000 m³, and the average efficiency of coal roadway excavation in the test area is 9.3 m/d, achieving efficient and safe recovery of coal seams in the covered area. A new progressive gas control model of soft coal across working face has been preliminarily explored.
- soft coal seam /
- gas drainage /
- pneumatic screw motor /
- directional drilling /
- completion technology with screen pipe /
- Huainan

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参考文献(15)

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