Intergranular clay films control inelastic deformation in the Groningen gas reservoir: Evidence from split-cylinder deformation tests
Pijnenburg, Ronald;
Verberne, Berend Antonie;
Hangx, Suzanne;
Spiers, Christopher James;
2019
|| YoDa Data Repository, Utrecht University, Netherlands
Production of oil and gas from sandstone reservoirs leads to small elastic and inelastic strains in the reservoir, which may induce surface subsidence and seismicity. While the elastic component is easily described, the inelastic component, and any rate-sensitivity thereof remain poorly understood in the relevant small strain range (≤ 1.0%). To address this, we performed a sequence of five stress/strain-cycling plus strain-marker-imaging experiments on a single split-cylinder sample (porosity 20.4%) of Slochteren sandstone from the seismogenic Groningen gas field. The tests were performed under in-situ conditions of effective confining pressure (40 MPa) and temperature (100°C), exploring increasingly large differential stresses (up to 75 MPa) and/or axial strains (up to 4.8%) in consecutive runs. At the small strains relevant to producing reservoirs (≤ 1.0%), inelastic deformation was largely accommodated by deformation of clay-filled grain contacts. High axial strains (>1.4%) led to pervasive intragranular cracking plus intergranular slip within localized, conjugate bands. Using a simplified sandstone model, we show that the magnitude of inelastic deformation produced in our experiments at small strains (≤ 1.0%) and stresses relevant to the Groningen reservoir can indeed be roughly accounted for by clay film deformation. Thus, inelastic compaction of the Groningen reservoir is expected to be largely governed by clay film deformation. Compaction by this mechanism is shown to be rate-insensitive on production time-scales, and is anticipated to halt when gas production stops. However, creep by other processes cannot be eliminated. Similar, clay-bearing sandstone reservoirs occur widespread globally, implying a wide relevance of our results.
The data is provided in a folder with 3 subfolders for 5 experiments/samples. Detailed information about the files in these subfolders as well as information on how the data is processed is given in the explanatory file Pijnenburg-et-al_2019_data-description.docx. Contact person is Ronald Pijnenburg - Researcher - r.p.j.pijnenburg@uu.nl.
Originally assigned keywords
Corresponding MSL vocabulary keywords
MSL enriched keywords
| Originally assigned sub domains |
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| MSL enriched sub domains |
- rock and melt physics
- analogue modelling of geologic processes
- microscopy and tomography
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| Source |
http://dx.doi.org/10.24416/UU01-8AVM9K |
| Source publisher |
YoDa Data Repository, Utrecht University, Netherlands |
| DOI |
10.24416/UU01-8AVM9K |
| Authors |
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| Contributors |
- Experimental rock deformation/HPT-Lab (Utrecht University, The Netherlands)
- HostingInstitution
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| References |
- Pijnenburg, R. P. J., Verberne, B. A., Hangx, S. J. T., & Spiers, C. J. (2019). Intergranular Clay Films Control Inelastic Deformation in the Groningen Gas Reservoir: Evidence From Split‐Cylinder Deformation Tests. Journal of Geophysical Research: Solid Earth, 124(12), 12679–12702. Portico. https://doi.org/10.1029/2019jb018702
- 10.1029/2019JB018702
- IsSupplementTo
- Preibisch, S., Saalfeld, S., & Tomancak, P. (2009). Globally optimal stitching of tiled 3D microscopic image acquisitions. Bioinformatics, 25(11), 1463–1465. https://doi.org/10.1093/bioinformatics/btp184
- 10.1093/bioinformatics/btp184
- IsReferencedBy
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| Contact |
- Experimental rock deformation/HPT-Lab (Utrecht University, The Netherlands)
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| Citation |
Pijnenburg, R., Verberne, B. A., Hangx, S., & Spiers, C. J. (2019). Intergranular clay films control inelastic deformation in the Groningen gas reservoir: Evidence from split-cylinder deformation tests. Utrecht University. https://doi.org/10.24416/UU01-8AVM9K |
| Collection period(s) |
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| Geo location(s) |
- 53.14228274279933, 6.447993994041667, 53.460706452448434, 7.041255712791667
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