汶川地震断裂带科学钻探项目WFSD-2孔钻井液工艺研究

英文篇名：Research on Drilling Fluid Technology for WFSD-2 Hole of Wenchuan Earthquake Fault Scientific Drilling Project
中文刊名：探矿工程(岩土钻掘工程)
英文刊名：Exploration Engineering(Rock & Soil Drilling and Tunneling)
作者：陶士先 ; 陈礼仪 ; 单文军 ; 李之军 ; 李晓东 ; 张涛
英文作者：TAO Shi-xian1 ; CHEN Li-yi2 ; SHAN Wen-jun1 ; LI Zhi-jun2 ; LI Xiao-dong1 ; ZHANG Tao2(1.Beijing Institute of Exploration Engineering ; Beijing 100083 ; China ; 2.Chengdu University of Technology ; Chengdu Sichuan 610059 ; China)
中文关键词：汶川地震 ; 地震断裂带 ; 科学钻探 ; 复杂地层 ; 孔壁稳定 ; 钻井液体系
英文关键词：Wenchuan earthquake ; earthquake fault ; scientific drilling ; complex formation ; hole wall stability ; drilling fluid system
出版日期：2012-09-25
机构：北京探矿工程研究所;成都理工大学;
年：2012
期：09
出版单位：探矿工程(岩土钻掘工程)

摘要

汶川地震断裂带科学钻探项目二号孔(WFSD-2),地质条件极为复杂,孔壁稳定性差。施工期间由于地层中水敏性矿物吸水膨胀、地层破碎及地应力释放等原因,多次发生孔壁缩径、坍塌掉块及漏失现象。针对以上问题,施工中采用了以低粘增效粉和改性沥青为主要原料的LBM-GLA钻井液体系,通过对钻井液配方、性能参数的合理调整与维护以及固相等方面的控制与处理,较好地解决了上述问题。重点介绍了WFSD-2孔各孔段钻井液的使用及维护情况。
The geological conditions were extremely complicated with poor wall stability in WFSD-2 hole drilling construction of Wenchuan earthquake fault scientific drilling project.Due to the water-sensitive formation of mineral water swelling,broken strata and stress release,the hole wall necking,collapsing and leakage happened many times.Through the adjustment and maintenance of the formulation,parameters,and solid control,LBM-GLA drilling fluid system with a low viscosity synergy powder and modified asphalt as the main raw materials was adopted in the construction;the above problems were successfully solved.This article mainly describes the use and maintenance of drilling fluid in each section of WFSD-2 hole.

引文

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