摘要
FMS地层微电阻率扫描成像测井技术诞生于1986年,1989年首次在大洋钻探中获得应用。它采用纽扣电极阵列沿井壁纵向扫描方式采集地层的电阻率信息,经过适当的数字和图像处理后转化为井壁地层的二维微电阻率图像。FMS资料具有分辨率高(理论分辨率为5 mm)、连续原位测量及定向性等特点,是科学大洋钻探中岩芯地质分析方法的重要补充,具有其他地球物理方法难以替代的作用。从岩芯归位和定向、岩性岩相识别及地层剖面重建、沉积构造和古流方向分析、地层旋回性与古气候周期分析、浊积层厚度统计分析、构造和应力场分析及洋壳研究等7个方面对FMS在科学大洋钻探中的应用现状进行综述,对目前FMS成像测井资料应用中存在的问题及发展方向进行分析,包括利用率不高、定量分析成果欠缺、研究深度和广度有待拓展等。
FMS formation micro-resistivity image logging, developed in 1986, was first used in scientific ocean drilling in 1989. It measures the electrical conductivity of borehole strata by using an array of pad-mounted button electrodes. The measured data are transformed into visual images reflecting variations of stratal details after a series of numerical and image processing steps. As high resolution （ down to 5 ram）, continuous and orientated in-situ measurements, FMS image logs provide an important supplement to core-based geological analysis in scientific ocean drilling, which is difficult to be replaced by other geophysical well loggings. The paper presents a review on the applications of FMS data to scientific ocean drilling, including core depth matching and core orientation, recog- nition of fithology and reconstruction of lithostratigraphic columns, sedimentary structures and paleo-current direc- tion analysis, stratigraphic cyclicity and paleo-climate analysis, statistics of thickness distribution of turbidite beds, structural and stress analysis, as well as oceanic crust research. Some problems existing in the analyses of the FMS data from ocean drilling are discussed, including low rate of utilization, insufficiency of quantitative analysis, and limited application scope and profundity.
出处
《地球科学进展》
CAS
CSCD
北大核心
2012年第3期347-358,共12页
Advances in Earth Science
基金
国家自然科学基金项目"南海北部陆坡区深水沉积牵引体的时空分布及形成机制"(编号:91028003)
"南海深海测井记录中的气候周期和事件"(编号:40476030)
国家高技术研究发展计划重点项目"大洋钻探站位调查关键技术研究"(编号:2008AA093001)资助
关键词
FMS成像测井
大洋钻探
岩性剖面重建
地层旋回性
构造应力场
洋壳研究
Formation microscanner image logging
Scientific ocean drilling
Reconstruction of lithostrati-graphic column
Stratal cyclicity
Tectonic stress field
Oceanic crust research
