Browsing NTNU Open by Author "Gheibi, Sohrab"
Now showing items 1-6 of 6
-
Fracture Assessment of Quasi-brittle Rock Simulated by Modified Discrete Element Method
Gheibi, Sohrab; Holt, Rune Martin (Journal article; Peer reviewed, 2020)New developments of an in-house hybrid code, named Modified Discrete Element Method (MDEM) are presented in the paper. The new developments are on the treatment of pre-existing and propagating fractures in quasi-brittle ... -
Geomechanical analysis of the influence of CO2 injection location on fault stability
Vilarrasa, Victor; Makhnenko, Roman; Gheibi, Sohrab (Peer reviewed; Journal article, 2016)Large amounts of carbon dioxide (CO2) should be injected in deep saline formations to mitigate climate change, implying geomechanical challenges that require further understanding. Pressure build-up induced by CO2 injection ... -
Impact of Faults and Fractures in Geomechanics of Reservoir Pressurization: A Numerical Approach
Gheibi, Sohrab (Doctoral theses;2018:51, Doctoral thesis, 2018)The importance of geomechanical modeling has risen due to the increase in the concerns about the possible seismic activities and leakage problems due to the reactivation of faults/fracture in the reservoir-caprock system ... -
Modified discrete element method (MDEM) as a numerical tool for cement sheath integrity in wells
Gheibi, Sohrab; Agofack, Nicolaine; Sangesland, Sigbjørn (Peer reviewed; Journal article, 2021)Cement sheaths undergo extreme loading conditions in wells during subsurface operations. A damaged cement sheath may lead to fluid communication between different formation layers and fluid migration up to the surface, ... -
Numerical analysis of mixed-mode rupture propagation of faults in reservoir-caprock system in CO2 storage
Gheibi, Sohrab; Vilarrasa, Victor; Holt, Rune Martin (Journal article, 2018)Injection-induced seismicity and caprock integrity are among the most important concerns in CO2 storage operations. Understanding and minimizing fault/fracture reactivation in the first place, and rupture growth/propagation ... -
Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests
Gheibi, Sohrab; Sangesland, Sigbjørn; Vrålstad, Torbjørn (Chapter, 2019)To achieve an acceptable level of zonal isolation, well integrity should be guaranteed in hydrocarbon production and geological CO2 sequestration. Well pressure test can cause different types of failures in the well system ...