In situ performed fracturing experiment of a limestone sample using an X-ray transparent triaxial cell: micro-XRCT data sets and measurement data (doi:10.18419/darus-3106)

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In situ performed fracturing experiment of a limestone sample using an X-ray transparent triaxial cell: micro-XRCT data sets and measurement data

doi:10.18419/darus-3106

DaRUS

2023-04-05

1

Ruf, Matthias; Lee, Dongwon; Steeb, Holger, 2023, "In situ performed fracturing experiment of a limestone sample using an X-ray transparent triaxial cell: micro-XRCT data sets and measurement data", https://doi.org/10.18419/darus-3106, DaRUS, V1, UNF:6:jZuOGs6RP72PrLA8cCwFjg== [fileUNF]

In situ performed fracturing experiment of a limestone sample using an X-ray transparent triaxial cell: micro-XRCT data sets and measurement data

doi:10.18419/darus-3106

Ruf, Matthias (University of Stuttgart, Institute of Applied Mechanics (CE))

Lee, Dongwon (University of Stuttgart, Institute of Applied Mechanics (CE))

Steeb, Holger (University of Stuttgart, Institute of Applied Mechanics (CE) & SC SimTech)

Ruf, Matthias

Lee, Dongwon

Steeb, Holger

Institute of Applied Mechanics (CE) - Chair for Continuum-Mechanics

Cluster of Excellence EXC 2075 "SimTech"

2022

357361983

327154368

DaRUS

Steeb, Holger

https://doi.org/10.18419/darus-3106

Computer and Information Science, Earth and Environmental Sciences, Engineering, Limestone, Micro X-Ray Computed Tomography (micro-XRCT), X-Ray Microtomography, In Situ, Porous Media, Fracture, Hydraulic Fracturing

This dataset contains in situ recorded micro X-ray Computed Tomography (micro-XRCT) scan data sets (reconstructed and projection images) of a marine limestone sample under different triaxial loading conditions. The loading conditions were applied to establish the initial conditions to run the so-called Natural Hydraulic Fracture (NHF) protocol proposed by French et al. (2012). Since the fracturing attempt was not successful, in a subsequent step, a Confined Compressive Strength (CCS) test was carried out successfully under a confining pressure of 2 MPa. The experiment was performed in an in-house developed and self-built low X-ray absorbing triaxial cell for 1/4 inch diameter core samples with external axial load application. The cell is designed for confining pressures up to 42.5 MPa. The experiment was conducted in the context of an application example to demonstrate the possibilities of the setup presented in Ruf & Steeb (2023). For the test, a prepared cylindrical marine limestone sample with a length of 15 mm and a diameter of 6.37 mm was used, having a mass of 1.0 g in dry state and a sufficiently low permeability (k = 1.9073x10^-18 m²) for the procedure. As pore fluid, 73% glycerin solution (density 1.19 g/ml, viscosity of 0.03 Pa s) was employed.<br> <br> Before running the NHF protocol, the initial boundary conditions, an axial load &#963_a = 36 MPa, a confining pressure &#963_r = 38 MPa, and a fully saturated state with a uniform pore pressure distribution p = 35 MPa have to be applied. From the different sample states before and after running the NHF protocol and CCS test, the following scans were performed: <br> <ol> <li>scan "1o" & "1d" of unloaded, dry state</li> <li>scan "2d" of loaded (&#963_a = 36 MPa, &#963_r = 38 MPa), dry state</li> <li>scan "3d" of loaded (&#963_a = 36 MPa, &#963_r = 38 MPa), saturated (p = 35 MPa) state</li> <li>scan "4d" & "4o" of loaded (&#963_a = 2 MPa, &#963_r = 38 MPa), saturated (p = 0 MPa) state after NHF protocol</li> <li>scan "5d" & "5o" of unloaded state after NHF protocol</li> <li>scan "6d" & "6o" of confined shear failure in the post-failure regime (&#963_r = 2 MPa), partially saturated from NHF test (drained conditions)</li> </ol> It is distinguished between overview scans "*o" showing the entire specimen and detail scans "*d" showing the center region of the sample. The files "*._projections.tar.gz" obtain the projection image data sets, and the files "*._reconstructed.tar.gz" are the corresponding reconstructed ones. The files "*._reconstructed_cropped.tar.gz" are cropped to the rock sample area to reduce the data size. The files "utm_data.csv," "pumpA_data.csv," and "pumpB_data.csv" include the corresponding measurement data over time of the Universal Testing Machine UTM (axial load control), pump A (pore fluid pressure control), and pump B (confining fluid pressure control).

Image data

Measurement data

Ruf, M., Lee, D., & Steeb, H. (2023). A multifunctional mechanical testing stage for micro X-ray computed tomography. <em>Review of Scientific Instruments</em>, 94, 085115.

10.1063/5.0153042

Ruf, M., Lee, D., & Steeb, H. (2023). A multifunctional mechanical testing stage for micro X-ray computed tomography. <em>Review of Scientific Instruments</em>, 94, 085115.

Ruf, M., & Steeb, H., (2020). An open, modular, and flexible micro X-ray computed tomography system for research. <em>Review of Scientific Instruments</em>, 91(11), 113102. <a href="https://doi.org/10.1063/5.0019541">https://doi.org/10.1063/5.0019541</a>

<br>French, M. E., Boutt, D. F., & Goodwin, L. B. (2012). Sample dilation and fracture in response to high pore fluid pressure and strain rate in quartz-rich sandstone and siltstone. <em>Journal of Geophysical Research: Solid Earth, 117</em>(B03215). <a href="https://doi.org/10.1029/2011jb008707">https://doi.org/10.1029/2011jb008707</a>

• Number of cases: 2710609

• No. of variables per record: 4

• Type of File: text/tab-separated-values

UNF:6:85GK4HNLvPYSdYWASl8Dpw==

• Number of cases: 2710606

• No. of variables per record: 4

• Type of File: text/tab-separated-values

UNF:6:gRZCCO845YrgEc9udZcVlg==

• Number of cases: 2710602

• No. of variables per record: 3

• Type of File: text/tab-separated-values

UNF:6:rdCQ2hRLGvFlsnGmMO4duw==

• time [s] - time [s]
• pressure [bar] - pressure [bar]
• flow_rate [ml/min] - flow_rate [ml/min]
• volume [ml] - volume [ml]
• time [s] - time [s]
• pressure [bar] - pressure [bar]
• flow_rate [ml/min] - flow_rate [ml/min]
• volume [ml] - volume [ml]
• time [s] - time [s]
• position [mm] - position [mm]
• force [N] - force [N]

f145595 Location:

Summary Statistics: Min. 0.5796; Max. 1357713.322; Valid 2710609.0; StDev 391940.4733415354; Mean 678854.400084295

Variable Format: numeric

Notes: UNF:6:TIbtruGuk2ghure71FS0GQ==

f145595 Location:

Summary Statistics: Min. 0.317; StDev 171.6405176268883; Max. 350.336; Valid 2710609.0; Mean 201.72568842065277

Variable Format: numeric

Notes: UNF:6:9Jj0aMtFlul0SvSd4M/Biw==

f145595 Location:

Summary Statistics: StDev 0.022087527057192247; Min. -5.472; Mean 2.0036515779372588E-4; Max. 8.1679; Valid 2710609.0;

Variable Format: numeric

Notes: UNF:6:FA2kQPnBBk/5cJVMSby/dg==

f145595 Location:

Summary Statistics: Max. 97.6336; StDev 2.136858857783586; Mean 91.95555003156127; Valid 2710609.0; Min. 90.7587

Variable Format: numeric

Notes: UNF:6:IQBfQuCK45l4qJleH0N7Sg==

f145596 Location:

Summary Statistics: Mean 678854.7158867643; Min. 0.7605; StDev 391940.4514648713; Valid 2710606.0; Max. 1357713.6633

Variable Format: numeric

Notes: UNF:6:M+m1NdDNSS+GdvlZQCouHQ==

f145596 Location:

Summary Statistics: StDev 147.22840831536578; Valid 2710606.0; Mean 308.1227956878973; Max. 380.329; Min. -0.758;

Variable Format: numeric

Notes: UNF:6:SOqUTP/4RrSWgSuDBjolXA==

f145596 Location:

Summary Statistics: Mean -0.0013483569725722595; Min. -0.9101; StDev 0.037036581414368636; Max. 20.7654; Valid 2710606.0;

Variable Format: numeric

Notes: UNF:6:C5yNE8cXNWw+pElLhurRCg==

f145596 Location:

Summary Statistics: Mean 61.43177970025837; Min. 58.0153; Max. 103.1298; Valid 2710606.0; StDev 10.59565373999742

Variable Format: numeric

Notes: UNF:6:CaHsir8YQo7CjbrfzlljJQ==

f145594 Location:

Summary Statistics: StDev 391940.286016723; Max. 1357713.6639; Valid 2710602.0; Min. 0.7654; Mean 678855.1113141179

Variable Format: numeric

Notes: UNF:6:cq3GEzxEJiTL/6AJlfd2bA==

f145594 Location:

Summary Statistics: Max. 556.7001; Mean 556.383834356833; StDev 0.15605960829886695; Min. 555.969; Valid 2710602.0

Variable Format: numeric

Notes: UNF:6:+SIfKieQTPXArmTUpkkwgQ==

f145594 Location:

Summary Statistics: Valid 2710602.0; Max. 4.755; StDev 472.29736205803795; Mean -772.8014601474069; Min. -2917.67;

Variable Format: numeric

Notes: UNF:6:qiD2ZA3mHqThe7ANO1XMJg==

Label:

1d_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of detail scan "1d". (Internal ID: 20220801_02/projections)

application/x-gzip

Label:

1d_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "1d" ("1d_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220801_02/reconstructed)

application/x-gzip

Label:

1d_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "1d" ("1d_reconstructed.tar.gz"). 2100x2100x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220801_02/reconstructed_cropped)

application/x-gzip

Label:

1o_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of overview scan "1o". (Internal ID: 20220801_01/projections)

application/x-gzip

Label:

1o_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of overview scan "1o" ("1o_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 7.5 µm. (Internal ID: 20220801_01/reconstructed)

application/x-gzip

Label:

1o_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "1o" ("1o_reconstructed.tar.gz"). 860x860x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220801_01/reconstructed_cropped)

application/x-gzip

Label:

2d_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of detail scan "2d". (Internal ID: 20220802_01/projections)

application/x-gzip

Label:

2d_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "2d" ("2d_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220802_01/reconstructed)

application/x-gzip

Label:

2d_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "2d" ("2d_reconstructed.tar.gz"). 2100x2100x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220802_01/reconstructed_cropped)

application/x-gzip

Label:

3d_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of detail scan "3d". (Internal ID: 20220810_01/projections)

application/x-gzip

Label:

3d_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "3d" ("3d_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220810_01/reconstructed)

application/x-gzip

Label:

3d_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "3d" ("3d_reconstructed.tar.gz"). 2100x2100x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220810_01/reconstructed_cropped)

application/x-gzip

Label:

4d_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of detail scan "4d". (Internal ID: 20220812_01/projections)

application/x-gzip

Label:

4d_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "4d" ("4d_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220812_01/reconstructed)

application/x-gzip

Label:

4d_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "4d" ("4d_reconstructed.tar.gz"). 2100x2100x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220812_01/reconstructed_cropped)

application/x-gzip

Label:

4o_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of overview scan "4o". (Internal ID: 20220813_01/projections)

application/x-gzip

Label:

4o_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of overview scan "4o" ("4o_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 8.0 µm. (Internal ID: 20220813_01/reconstructed)

application/x-gzip

Label:

4o_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "4o" ("4o_reconstructed.tar.gz"). 860x860x2141 voxels with a uniform voxel size of 8.0 µm. (Internal ID: 20220813_01/reconstructed_cropped)

application/x-gzip

Label:

5d_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of detail scan "5d". (Internal ID: 20220815_01/projections)

application/x-gzip

Label:

5d_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "5d" ("5d_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220815_01/reconstructed)

application/x-gzip

Label:

5d_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "5d" ("5d_reconstructed.tar.gz"). 2100x2100x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220815_01/reconstructed_cropped)

application/x-gzip

Label:

5o_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of overview scan "5o". (Internal ID: 20220815_02/projections)

application/x-gzip

Label:

5o_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of overview scan "5o" ("5o_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 7.5 µm. (Internal ID: 20220815_02/reconstructed)

application/x-gzip

Label:

5o_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "5o" ("5o_reconstructed.tar.gz"). 860x860x2141 voxels with a uniform voxel size of 7.5 µm. (Internal ID: 20220815_02/reconstructed_cropped)

application/x-gzip

Label:

6d_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of detail scan "6d". (Internal ID: 20220818_01/projections)

application/x-gzip

Label:

6d_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "6d" ("6d_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220818_01/reconstructed)

application/x-gzip

Label:

6d_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "6d" ("6d_reconstructed.tar.gz"). 2220x2220x2141 voxels with a uniform voxel size of 3.0 µm. (Internal ID: 20220818_01/reconstructed_cropped)

application/x-gzip

Label:

6o_projections.tar.gz

Text:

Projection images (360 deg, angle increment 0.2 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format of overview scan "6o". (Internal ID: 20220818_02/projections)

application/x-gzip

Label:

6o_reconstructed.tar.gz

Text:

Reconstructed micro-XRCT data set in 16 bit *.tif file format of overview scan "6o" ("6o_projections.tar.gz"). 2940x2940x2141 voxels with a uniform voxel size of 7.5 µm. (Internal ID: 20220818_02/reconstructed)

application/x-gzip

Label:

6o_reconstructed_cropped.tar.gz

Text:

Cropped reconstructed micro-XRCT data set in 16 bit *.tif file format of detail scan "6o" ("6o_reconstructed.tar.gz"). 912x912x2141 voxels with a uniform voxel size of 7.5 µm. (Internal ID: 20220818_02/reconstructed_cropped)

application/x-gzip