小秦岭金矿田3500 m特深孔冲洗液技术  

The drilling fluid technology of 3500m extra‑deep hole in Xiaoqinling Gold Field

作　　者：王鹏飞 郭曜欣 翟育峰 王鲁朝 杨芳 宋宝杰 王修晖 WANG Pengfei;GUO Yaoxin;ZHAI Yufeng;WANG Luzhao;YANG Fang;SONG Baojie;WANG Xiuhui(Henan First Geology and Mineral Survey Institute Co.,Ltd.,Luoyang Henan 471023,China;Key Laboratory of Precious Metal Analysisand Exploration Technology of Ministry of Natural Resources,Luoyang Henan 471023,China;No.3 Exploring Institute of Geo‑mineral Resources,Yantai Shandong 264004,China;Drilling Engineering Technology Research Center of Shandong Bureau of Geology and Mineral,Yantai Shandong 264004,China)

机构地区：[1]河南省第一地质矿产调查院有限公司,河南洛阳471023 [2]自然资源部贵金属分析与勘查技术重点实验室,河南洛阳471023 [3]山东省第三地质矿产勘查院,山东烟台264004 [4]山东省地矿局钻探工程技术研究中心,山东烟台264004

出　　处：《钻探工程》2024年第5期115-121,共7页Drilling Engineering

基　　金：河南省财政地质勘查项目“河南省灵宝市小秦岭金矿田南中矿带深部探测”(编号:2020-18-06);河南省地矿局局管地质科研项目“小秦岭金矿田复杂地质条件下3500 m深孔钻探工艺研究”(编号:202201);山东省地矿局局控科技创新项目“3000 m超深科学钻探关键技术研发应用”(编号:KY202102);山东省地矿局2022年度科技攻关项目“深孔地质岩心钻孔轨迹控制技术研发及应用”(编号:KY202205)。

摘　　要：小秦岭金矿田3500 m特深孔(ZK001孔)位于河南省灵宝市,是小秦岭构造带上深部探测的第一口全孔连续取心特深钻孔,该钻孔地层岩性十分复杂,软、硬、碎地层交互出现,护壁极其困难,钻进中伴随孔壁坍塌、掉块、水化分解造浆、高地应力断层泥缩径和微裂隙失水等多种复杂工况。本文针对地层变化调整冲洗液体系,上部采用低固相冲洗液,下部采用低固相聚合物防塌冲洗液体系,不断优化冲洗液配方,及时维护调整性能参数,有效解决了孔内各种难题。为小秦岭地区提供了一种可靠的深孔岩心钻探冲洗液技术。The 3500m extra‑deep hole(ZK001 hole)in Xiaoqinling gold mine field is located in Lingbao City,Henan Province.It is the first full‑hole continuous coring extra‑deep hole in the Xiaoqinling tectonic belt.The formation lithology of this hole is very complicated,with soft,hard and broken strata appearing interactively,and the wall protection is extremely difficult.There are many complicated conditions in drilling,such as hole wall collapse,block loss,hydration decomposition and pulping,high in‑situ stress gouge shrinkage and micro‑fracture water loss.In this paper,the flushing solution system is adjusted according to the formation changes.The upper part uses low solid phase flushing solution and the lower part uses low solid phase polymer anti‑collapsing flushing solution system.The flushing solution formula is constantly optimized,the performance parameters are timely maintained and adjusted,and various problems in the hole are effectively solved.It provides a reliable flushing fluid technology for deep hole core drilling in Xiaoqinling area.

关 键 词：特深孔 复杂地层 聚合物防塌冲洗液 高地应力 缩径 断层泥 

分 类 号：P634.6[天文地球—地质矿产勘探]