物探与化探2017，Vol.41Issue(4)：672-677,6.DOI:10.11720/wtyht.2017.4.13
藏南泽当科学钻探ZDSD-1孔超声成像测井解释
Interpretation of ultrasonic imaging logging data obtained in Drill Hole ZDSD-1 of the Zedang Scientific Drilling in Tibet
摘要
Abstract
Drill Hole ZDSD-1 is the third scientific drilling hole in the Luobusha chromite deposit,belonging to the "continental scientific drilling:site selection and pilot hole" project,and its final depth is 1486.86 m.The drill hole implemented continuous coring and conducted geophysical well logging.The ultrasonic image logging data contained a mass of information about the borehole wall geological features,which played an important role in the identification of fractures,fracture zones and the analysis of tectonic stress field.Using the ultrasonic image logging data,the authors found that most fractures exhibit the form of dark stripes whose width changes obviously,the fracture zones in most cases exhibit littery dark patches,while they assume a large area of dark stripes where the strata are broken seriously, and the borehole breakouts exhibit a pair of symmetrical dark straight stripes or patches spacing 180 degree.Through the statistics of the orientation for 20 pairs of borehole breakouts,the authors infer that the orientation of the maximum horizontal principal stress for drill hole ZDSD-1 is 40.3°~218.4°.关键词
ZDSD-1孔/超声成像测井/裂缝/地应力Key words
drill hole ZDSD-1/ultrasonic image logging/fractures/stress分类
天文与地球科学引用本文复制引用
刘东明,林振洲,高文利,孔广胜,贾定宇..藏南泽当科学钻探ZDSD-1孔超声成像测井解释[J].物探与化探,2017,41(4):672-677,6.基金项目
物化探所基本科研业务费项目(AS2015J07) （AS2015J07）
大陆科学钻探选址与钻探实验研究项目(SinoProbe-05) （SinoProbe-05）
