This data file is for test 2. In this test a sample of granite with a pre-cut (man made fracture) is confined, heated and differential stress is applied. The max temperature in this this system development test is 95C. More test details can be found on the spreadsheets--note that there are 2 spreadsheets

This is the results of an initial setup-shakedon test in order to develop the plumbing system for this test design. a cylinder of granite with offset holes was jacketed and subjected to confining pressure and low temperature (85C) and pore water pressure. Flow through the sample was developed at different test stages.

Submission includes data from laboratory slide-hold-slide tests, combined with flow through tests, conducted on Westerly granite with 30 degree sawcut. Tests were conducted with a constant confining pressure of 30 MPa with an average pore pressure of 10 MPa at temperatures of 23 and 200 degC. Three fluid flow conditions were examined (1) no flow, (2) cycled flow, and (3) continuous flow. Data were collected to asses the effect of temperature and pore fluid on frictional healing rates in granite at geothermal conditions. Data is available in XML and JSON data types.

The U.S. Geological Survey (USGS), at the request of the U.S. Army Environmental Command (USAEC), evaluated the capabilities of two borehole technologies to measure horizontal groundwater velocity and direction of flow in a parallel-plate fractured-rock simulator. A colloidal borescope flowmeter (HB) and a heat-pulse flowmeter (HH) were deployed in 4-inch and 6-inch inner-diameter simulated uncased wells that spanned 0.39- and 1.0-inch apertures with simulated groundwater velocities ranging from 2 to 958 feet per day. Measurements were made at the USGS Hydrologic Instrumentation Facility in the Hydraulics Laboratory and the Indianapolis office of the USGS Ohio-Kentucky-Indiana Water Science Center. Ten measurements were made with the HB in the 1-inch fracture aperture intersecting a 6-inch inner-diameter well. Seven measurements were made in the 0.39-inch fracture aperture intersecting a 4-inch inner diameter well and six were made in the 0.39-inch aperture 6-inch inner-diameter well. All measurements were within the velocity limits specified by the manufacturer. Results from these measurements using the HB can be found in the child item, 'Experimental Results for Colloidal Borescope Flowmeter'. Thirty-seven measurements were made with the HH in the 1-inch fracture aperture intersecting a 6-inch inner-diameter well. Eight measurements were made in the 0.39-inch fracture aperture intersecting a 4-inch inner diameter well and eight were made in the 0.39-inch aperture 6-inch inner-diameter well. The tested velocity range (2 to 958 ft/d) was similar to the range examined with the HB (34 to 958 ft/d) but exceeded the range suggested by the manufacturer (0.5-100 ft/d). Results from these measurements using the HH can be found in the child item, 'Experimental Results for Heat-Pulse Flowmeter'. Seven measurements were made with the HB using various vertical placements relative to the fracture. Results from these vertical measurements using the HB can be found in the child item, 'Experimental Results for Vertical Placement of Colloidal Borescope Flowmeter'. The flowmeter systems used in this study are described in Bayless and others (2011), available at https://doi.org/10.1111/j.1745-6592.2010.01324.x.

The heat-pulse flowmeter (HH) used in this testing is a KVA Model 200 system. The instrument computes groundwater vectors from heat arrival and decay in an array of four thermistors that surround a single heat source. An external compass attached to the top of the deployment system is used to orient the flowmeter in the borehole. The HH measured groundwater velocity and flow in the x-y plane. Fuzzy packers were filled with 0.08-inch diameter glass beads for all tests. The HH thermistors were centered over the simulated fracture during measurements. One to four measurements were made with the HH for each simulated flow.