Skip to main content

Experimental Results for Colloidal Borescope Flowmeter

Dates

Publication Date
Start Date
2012-08-20
End Date
2014-12-09

Citation

Bryant, S.R., and Bayless, E.R., 2021, Laboratory Assessment of Colloidal Borescope and Heat-Pulse Flowmeters in Measuring Horizontal Flow in Fractured-Rock Simulators: U.S. Geological Survey data release, https://doi.org/10.5066/P9IF9JH8.

Summary

The colloidal borescope flowmeter (HB) used in this testing was developed by AquaVISION, Llc. The instrument employs a charge-coupled device camera, an optical magnification lens (140x), and a light-emitting diode (LED) illumination source to visually track neutrally buoyant colloids (approximately 1-5 microns) moving horizontally through the borehole. The device measured groundwater velocity and flow direction in the x-y (horizontal) plane. The HB magnetometer was checked with a compass to assure proper instrument orientation before deployment into the simulators. Borescope data were collected for each flow condition for a period of at least 30 minutes. After data collection, borescope data were inspected for anomalous periods of [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

HB01.csv 2.92 KB text/csv
HB02.csv 15.1 KB text/csv
HB03.csv 8.19 KB text/csv
HB04.csv 4.28 KB text/csv
HB05.csv 2.47 KB text/csv
HB06.csv 9.03 KB text/csv
HB07.csv 1.55 KB text/csv
HB08.csv 14.4 KB text/csv
HB09.csv 10.24 KB text/csv
HB10.csv 6.33 KB text/csv
HB11.csv 17.2 KB text/csv
HB12.csv 11.64 KB text/csv
HB13.csv 20.17 KB text/csv
HB14.csv 10.19 KB text/csv
HB15.csv 40.34 KB text/csv
HB16.csv 18.6 KB text/csv
HB17.csv 40.69 KB text/csv
HB18.csv 44.08 KB text/csv
HB19.csv 22.11 KB text/csv
HB20.csv 9.7 KB text/csv
HB21.csv 18.36 KB text/csv
HB22.csv 50.6 KB text/csv
HB23.csv 90.48 KB text/csv
HBXX_ReadMe.docx 12.71 KB application/vnd.openxmlformats-officedocument.wordprocessingml.document
HBXX_Supplemental.csv 2.75 KB text/csv

Purpose

Groundwater flow is generally complex and difficult to characterize through rock units with substantial preferential flow pathways. Two borehole flowmeters capable of measuring horizontal flow rates and directions were evaluated in parallel-plate laboratory devices intended to simulate groundwater flow through a borehole that intersects a bedrock fracture in order to better understand the limitations and strengths of the two technologies. Measurements were made in wells with two diameters intersecting fractures with two apertures and multiple water flow rates.

Item Actions

View Item as ...

Save Item as ...

View Item...