• 责任者：Liu Peng (No.2 Exploration Institute of Geology and Mineral Resources of Qinghai Province ; Xining 810001 ; China) ; Wang Daokuan
• 刊名：Exploration Engineering
• 出版年：2013
• 卷期：40(11)
• 关键词：复杂地层钻进 ; drilling in complicated formation ; 钻井液 ; drilling fluid
• 页码：p.5-9
• 图表：4 illus., 4 tables, 7 refs.
• 分类号：2000
• issnNo：ISSN1672-7428
• isbnNo：CN11-5063/TD

     In order to evaluate and analyze the stratum fragmentizing situation in Yemaquan mining area of Qinghai, 6 evaluation indexes are put forward： broken specific surface, broken block, porosity of rocks, rock disintegration rate, coeffi- cient of rock integrity, compressive strength of rock. The fragmentized stratum classification standard is established by using fuzzy mathematical evaluation system and combining with rock fragmentized degree index; and combined with the drilling site situation of Yemaquan mining area, the fragmentized stratum is divided into 5 categories. A targeted drilling fluid system is studied out for fragmentizing stratum.