...., maximum deformation values at specific surface points. In many instances, dynamic deformation values need to be considered, especially when undermining surface structures that are sensitive to subsidence, differential displacements, and/or tilt. This paper discusses subsidence development (dynamic...

... and cementing. Finally, the subsidence stage is created where the applied displacement field displaces the rock column and consequently the cement and casing. The von Mises stress curve for the casing, and the plastification index of the cement and casing were examined. It was observed that areas...

... ABSTRACT: Ground subsidence presents a multitude of hazards, including an increased probability of flooding, deformation of underground pipelines, leakage and even explosions. The over-exploitation of deep groundwater, oil and gas resources over an extended period can result in an acceleration...

.... Commerciality was declared in 2013, following its discovery in 2010. To understand the geomechanical effects due to reservoir production, factors such as fault behavior, compaction, subsidence, deformations, and compressibility were considered. A one-way coupling procedure using the GeomecBR, Petrobras...

... ABSTRACT: In the Northern Appalachian region of the U.S., the coexistence of longwall coal mining and shale gas operations is a prominent feature. The gas wells in the vicinity of the longwall operations entail the potential for casing deformations arising from mining-induced subsidence...

... of the salt in which the oil storage caverns reside. Salt creep causes storage caverns to deform inward, thus losing volume. This loss of volume affects the salt above and around the caverns, puts stresses and strains on borehole casings, and creates surface subsidence which affects surface infrastructure...

... encountered in some cases in the US, where the inclination (dip) may be in the range of 10 degrees or greater. Ground movements under such conditions are evaluated using methodologies which assume horizontal seams for their calculations. In order to accurately predict subsidence under these conditions...

... geomechanical effects. This includes: 1) four well re-entries over the last 15 years to log in-situ reservoir compaction measurements based on gamma ray markers, 2) 18 years of continuous offshore platform GPS recording for seabed subsidence and 3) multi-finger caliper measurements for liner deformation...

...-plastic material in heterogeneous chalk reservoirs for compaction analysis which are optimized from history matching the surface subsidence. To this purpose, a 2D simulation case with over-burden, reservoir and under-burden is considered as a conceptual model. A random distribution of porosity field...

... configuration and 4-cavern configuration to analyze the stability of the hydrogen storage in terms of cavity volume shrinkage, stress distribution of rock mass around caverns, and surface subsidence. Through numerical simulation using FLAC 3D , the evolution law under long-time low-pressure conditions...

.... The model was validated with measured surface subsidence and longwall-induced pillar pressure. Both measurements and numerical modeling showed that the casing deformed because of relative displacements along distinct weak rock interfaces. Casing deformations at the weak claystone interfaces were found...

... modelling. reservoir simulation wellbore design fluid dynamics subsurface storage reservoir geomechanics reservoir characterization subsidence permeability climate change interaction upstream oil & gas co 2 injection porosity compaction reduction integrity simulator overburden...

... in porous media reservoir characterization hydraulic fracturing fracture metals & mining deformation breach bedding plane subsidence khademian variation ARMA 22 387 A case study on longwall-induced rockmass permeability under medium cover: Potential gas inflow implications Khademian, Z. CDC...

... deformation and subsequently seabed subsidence, but water injection may also lead to additional compaction in the North Sea fields (Doornhof et al., 2006). For example, cold seawater has been injected to improve oil recovery in the North Sea hydrocarbon chalk fields for many years. This has caused a softening...

... subsidence and have an impact on the stability of infrastructure. Very few studies were conducted to analyze the geo-risk of installation and operation of GSHPs in subarctic regions. In this paper, a fully coupled thermal-hydro-mechanical analysis is performed based on a finite element framework...

... the seabed subsidence due to field production. As the field has been depleted, it was identified as one of the potential CO 2 storage sites which require an extensive subsurface evaluation before field injection. upstream oil & gas fluid dynamics flow in porous media modeling & simulation...

... gaps around foundation provided by grouting materials to compensate for the subsidence, and adjusting foundation elevation provided by controlling grouting pressure to reduce the slope of the high tower structure body. The FGR mechanism was further developed by the theoretical analysis of foundation...

... with the actual measurements of pillar pressure, surface subsidence, and casing deformations. The study shows that the developed model provides reasonably accurate prediction of longwall-induced stresses and deformations in both the overburden over chain pillars and the gas well casings. The study indicates...

... ABSTRACT: Predicting the surface subsidence of a salt mine is of particular importance because the subsidence may lead to disaster during the salt mining. This paper aims to propose an inversion method of the subsidence of salt mining and apply it to a specific salt mine to verify its...

... and pillar stress was obtained from the numerical models. Surface subsidence was also calculated for each room-and-pillar panel. All three methods meet the stability factor requirement for safe secondary extraction. The Lift Left-Right method exhibits the highest stability factor while the Pillar Splitting...