Advances in Earth Science ›› 2012, Vol. 27 ›› Issue (3): 347-358. doi: 10.11867/j.issn.1001-8166.2012.03.0347

Special Issue: IODP

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Applications of High-Resolution Formation Microscanner Image Logs to Scientific Ocean Drilling

Zhong Guangfa, You Qian   

  1. State Key Laboratory of Marine Geology, Tongji University, Shanghai200092, China
  • Received:2012-02-19 Revised:2012-02-23 Online:2012-03-10 Published:2012-03-10

Zhong Guangfa, You Qian. Applications of High-Resolution Formation Microscanner Image Logs to Scientific Ocean Drilling[J]. Advances in Earth Science, 2012, 27(3): 347-358.

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 mm), 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, recognition of lithology and reconstruction of lithostratigraphic columns, sedimentary structures and paleo-current direction 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.

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