摘要
针对地质钻探小井眼条件下失返性漏失堵漏技术难题,开展了适用于地质钻探堵漏要求的聚合物交联凝胶研究。采用单因素优选法,优选了交联凝胶体系用各种处理剂,并以环保型植物胶GJ为成胶剂,加入交联控制剂N1及交联剂1号等组分,研制了一种延迟交联凝胶。该凝胶在广西某铀矿勘查ZK6371孔堵漏成功应用,解决了2个孔段失返性漏失问题。研究结果表明,该凝胶具有交联时间可控(交联时间10~75 min)以及较高的凝胶强度(承压≥6 MPa),在解决失返性漏失方面具有广阔的应用前景。
Aimed at the technical problem with lost circulation treatment in geological drilling,study has been carried out on polymer crosslinked gel.Utilizing the single factor method,the different additives for crosslinked gel systems has been optimized.With environment-friendly vegetable gum as gelation agent,a kind of delayed crosslinked gel has been prepared by adding crosslinking control agent N1 and crosslinking agent No.1.This gel was successful applied in the field plugging test of Guangxi Uranium exploration hole ZK6371,and the problem of lost return has been resolved.Research results indicate that this gel has controlled cross-linking time(10 to 75min),higher gel strength(≥6 MPa),and has a broad application prospect in solving lost return.
作者
熊正强
陶士先
刘俊辉
李晓东
薛倩冰
XIONG Zhengqiang;TAO Shixian;LIU Junhui;LI Xiaodong;XUE Qianbing(Beijing Institute of Exploration Engineering,Beijing 100083,China;Changsha Uranium Geology Research Institute,CNNC,Changsha Hunan 410007,China;Institute of Exploration Techniques,CAGS,Langfang Hebei 065000,China)
出处
《探矿工程（岩土钻掘工程）》
2020年第4期140-144,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
基金
国家重点研发计划项目“5000米智能地质钻探技术装备研发及应用示范”课题六“绿色环保冲洗液体系与废浆处理技术”(编号:2018YFC0603406)。
关键词
地质钻探
延迟交联凝胶
堵漏
失返性漏失
植物胶
geological drilling
delayed crosslinked gel
lost circulation treatment
lost return
vegetable gum
