Abstract
While cutting metals is a well-studied problem, rock cutting due to its inherent complexity and more complicated physics due to its granular structure is less-known. The substantial role of the pore fluid pressure and confining pressure in the cutting process is one of these differences that may surface in practical engineering problems especially in deep subsurface drilling. Two sets of experiments were conducted in this research using single polycrystalline diamond compact (PDC) cutters. Regular scratch tests conducted in atmospheric pressure on Carthage Marble were compared with scratch/cutting tests performed under pressure. Finite element analysis (FEA) is then carried out to determine failure parameters by match lab measurement to investigate any potential changes in rock failure properties. It has been observed that pressurized conditions as low as 250 psi may convert the cutting process from intuitive fracture initiation and coalescence phenomenon to rock scooping. More ductile failure, formation of cutting ribbons and the size of cracks are some of these characteristics which are not observed in low confining pressures.
| Original language | English (US) |
|---|---|
| Title of host publication | Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics |
| Editors | Patrick Dangla, Jean-Michel Pereira, Siavash Ghabezloo, Matthieu Vandamme |
| Publisher | American Society of Civil Engineers (ASCE) |
| Pages | 1900-1908 |
| Number of pages | 9 |
| ISBN (Electronic) | 9780784480779 |
| DOIs | |
| State | Published - Jan 1 2017 |
| Event | 6th Biot Conference on Poromechanics, Poromechanics 2017 - Paris, France Duration: Jul 9 2017 → Jul 13 2017 |
Other
| Other | 6th Biot Conference on Poromechanics, Poromechanics 2017 |
|---|---|
| Country | France |
| City | Paris |
| Period | 7/9/17 → 7/13/17 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Acoustics and Ultrasonics
Cite this
}
Comparative Experimental Study of Rock Cutting under High Confining Pressure and Atmospheric Conditions Using PDC Cutter. / Sheikhrezaei, Kian; Dahi Taleghani, Arash.
Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics. ed. / Patrick Dangla; Jean-Michel Pereira; Siavash Ghabezloo; Matthieu Vandamme. American Society of Civil Engineers (ASCE), 2017. p. 1900-1908.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Comparative Experimental Study of Rock Cutting under High Confining Pressure and Atmospheric Conditions Using PDC Cutter
AU - Sheikhrezaei, Kian
AU - Dahi Taleghani, Arash
PY - 2017/1/1
Y1 - 2017/1/1
N2 - While cutting metals is a well-studied problem, rock cutting due to its inherent complexity and more complicated physics due to its granular structure is less-known. The substantial role of the pore fluid pressure and confining pressure in the cutting process is one of these differences that may surface in practical engineering problems especially in deep subsurface drilling. Two sets of experiments were conducted in this research using single polycrystalline diamond compact (PDC) cutters. Regular scratch tests conducted in atmospheric pressure on Carthage Marble were compared with scratch/cutting tests performed under pressure. Finite element analysis (FEA) is then carried out to determine failure parameters by match lab measurement to investigate any potential changes in rock failure properties. It has been observed that pressurized conditions as low as 250 psi may convert the cutting process from intuitive fracture initiation and coalescence phenomenon to rock scooping. More ductile failure, formation of cutting ribbons and the size of cracks are some of these characteristics which are not observed in low confining pressures.
AB - While cutting metals is a well-studied problem, rock cutting due to its inherent complexity and more complicated physics due to its granular structure is less-known. The substantial role of the pore fluid pressure and confining pressure in the cutting process is one of these differences that may surface in practical engineering problems especially in deep subsurface drilling. Two sets of experiments were conducted in this research using single polycrystalline diamond compact (PDC) cutters. Regular scratch tests conducted in atmospheric pressure on Carthage Marble were compared with scratch/cutting tests performed under pressure. Finite element analysis (FEA) is then carried out to determine failure parameters by match lab measurement to investigate any potential changes in rock failure properties. It has been observed that pressurized conditions as low as 250 psi may convert the cutting process from intuitive fracture initiation and coalescence phenomenon to rock scooping. More ductile failure, formation of cutting ribbons and the size of cracks are some of these characteristics which are not observed in low confining pressures.
UR - http://www.scopus.com/inward/record.url?scp=85026329496&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85026329496&partnerID=8YFLogxK
U2 - 10.1061/9780784480779.235
DO - 10.1061/9780784480779.235
M3 - Conference contribution
SP - 1900
EP - 1908
BT - Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics
A2 - Dangla, Patrick
A2 - Pereira, Jean-Michel
A2 - Ghabezloo, Siavash
A2 - Vandamme, Matthieu
PB - American Society of Civil Engineers (ASCE)
ER -