Drillers arrived onsite this afternoon to begin the "Drill the Ridge" campaign for the Shale Hills catchment. To complement the 80ft well drilled on the North ridge several years prior, the plan included drilling a ~30m (100ft) well on the south ridge of the Shale Hills catchment. A continuous rock core (~2.5 in diameter) was extracted which will be used to directly measure fracture distributions, rock properties, and geochemistry. Further detailed logging and down-hole geophysics will provide measurements of resistivity, conductivity, spontaneous potential, temperature, gamma ray, optical televiewer, seismic velocity, neutron density, and much much more. At the conclusion of the campaign, the well will be cased and two nested wells installed (one at ~30m and one shallower ).
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Drill rig arrives on a snowy February afternoon.
Rig unloaded to our newly created road!
Tight squeeze...the new road is only 8ft wide.
Rig is set on pad and aligned with target (flags).
Tree removal easy with rig.
Drill is ready to begin!
Surface materials are collected via spooning, hammer method designed for 6in intervals.
Spooning complete, core extracted for a total of 21inches collected.
Bottom of spoon shows highly fractured shale.
Auger attached and drilling begins.
First cuttings are very yellow with silty fine texture.
At about 4.5 ft deep and still very yellow and fine.
Total augering equals 18 ft of highly fractured shale and mudstone.
Upper section of well is cased to prevent collapse.
Upper sections of core are highly fractured mudstones and siltstones.
A transition depth occurred between 51-52 ft.
Lower shale sections are intact cores.
This gallery depicts the February 2013 field campaign "Drill the Ridge."