贵州省者相二金矿小直径定向分枝孔钻进技术

宋继伟; 张恒春; 冉飞; 胡晨; 朱斗圣; 李奇龙; 陈登齐

宋继伟,张恒春,冉飞,胡晨,朱斗圣,李奇龙,陈登齐.贵州省者相二金矿小直径定向分枝孔钻进技术[J].贵州地质,2022,39(2):167-173, 180

贵州省者相二金矿小直径定向分枝孔钻进技术

Application of Directional Branching Drilling Technology of Slim Hole in Zhexiang(II)Gold Deposit of Guizhou Province

投稿时间：2022-01-07

DOI：

中文关键词: 定向钻进绳索取心定向分枝小直径钻孔轨迹贞丰者相二金矿贵州

英文关键词:Directional drilling Cord coring Directed branching Small diameter Drilling path Zhexiang gold Deposit in Zhijin Guizhou

基金项目:贵州省地质矿产勘查开发局地质科研项目(编号:黔地矿科合[2020]17号、黔地矿科合[2020]18号、黔地矿科合[2020]19号)。

作者	单位
宋继伟	贵州省地质矿产勘查开发局112地质大队，贵州安顺561000
张恒春	中国地质科学院勘探技术研究所，河北廊坊065000 中国地质调查局定向钻井技术创新中心，河北廊坊065000
冉飞	贵州省地质矿产勘查开发局112地质大队，贵州安顺561000
胡晨	中国地质科学院勘探技术研究所，河北廊坊065000
朱斗圣	贵州省地质矿产勘查开发局112地质大队，贵州安顺561000
李奇龙	贵州省地质矿产勘查开发局，贵州贵阳550004
陈登齐	贵州省地质矿产勘查开发局，贵州贵阳550004

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中文摘要:

以贵州省贞丰县者相二金矿小直径定向分枝孔工程为依托，结合矿区地质构造及岩性特征，对以绳索取心钻杆为主钻柱的定向分枝钻进技术进行实践研究。根据地质设计优选侧钻分枝点，利用专业软件进行钻孔轨迹设计和跟踪并设计配套侧钻钻头、通缆水龙头、定向接头等器具。通过对井底动力工具、钻头、定向仪器、泥浆泵等关键器具设备的遴选，探索匹配绳索取心工艺的侧钻分枝技术、定向钻进技术、稳斜钻进技术。通过分析造斜规律，优化钻进组合和钻进参数，精细控制了钻孔轨迹。成功实施了贵州首例小直径定向分枝孔，并顺利中靶，中靶精度802 m，并验证了“定向钻进+常规绳索取心钻进”实施小直径定向分枝孔整体方案的可行性，为绿色勘查、战略性矿产精准勘查技术配套及生态文明建设提供了技术支撑。

英文摘要:

Based on the small-diameter directional branch hole project in the Zhexiang No2 gold Mine in Zhenfeng county of Guizhou Province，combined with the geological structure and lithological characteristics of the mining area，a practical research on the directional branch drilling technology with wire rope coring drill pipe as the main drill string is carried outAccording to the geological design，the sidetrack branch point is selected，and the professional software is used to design and track the drilling trajectory，and design the supporting tools such as the sidetrack bit，the cable faucet，and the directional jointThrough the selection of bottom-hole power tools，drill bits，directional instruments，mud pumps and other key equipment and equipment，explore sidetracking branching technology，directional drilling technology，and steady-angle drilling technology that match the wire-line coring technologyBy analyzing the deflection law，optimizing the drilling combination and drilling parameters，the drilling trajectory is finely controlledSuccessfully implemented the first small-diameter directional branch hole in Guizhou，successfully hit the target with an accuracy of 802 m，and verified the feasibility of implementing the overall scheme of small-diameter directional branch hole by ‘directional drilling + conventional wireline coring drilling’ It provides technical support for green exploration，technical support for strategic mineral precision exploration and ecological civilization construction

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