Abstract: Systems and methods for transferring logging data from an offset well location to a target well location by adjusting the logging data to account for the difference in correlated depths between the target well and the offset well where logging data is acquired.

Abstract: Systems and methods for performing steam injection operations in heavy oil formations using a fully-coupled thermo-hydro-mechanical model for improved steam penetration during the steam injection operations.

Abstract: In some embodiments, an apparatus and a system, as well as a method and article of manufacture, may operate to determine a value of strain, such as an equivalent plastic strain, in a perforated portion of a well by applying a set of draw-down pressures to the surface of at least one perforation tunnel in the perforated portion. The perforated portion, in turn, is modeled using stress components provided by a global field model that includes the location of the well, to set boundary conditions at the surface of the well. A well drilling process and a tunnel perforating process are modeled with element removal and pressure addition for the perforated portion. Additional activity may include operating a controlled device based on the value of strain that is determined. Additional apparatus, systems, and methods are disclosed.

Abstract: Systems and methods for performing steam injection operations in heavy oil formations using a fully-coupled thermo-hydro-mechanical model for improved steam penetration during the steam injection operations.

Abstract: Systems and methods for transferring logging data from an offset well location to a target well location by adjusting the logging data to account for the difference in correlated depths between the target well and the offset well where logging data is acquired.

Abstract: System and methods of modeling casing deformation for hydraulic fracturing design are provided. A three-dimensional (3D) global model of a subsurface formation is generated. Values of material parameters for different points of the subsurface formation represented by the 3D global model are calculated based on a geomechanical analysis of well log data obtained for the subsurface formation. The calculated values are assigned to corresponding points of the global model. A 3D sub-model of a selected portion of the formation including a casing to be placed along a planned trajectory of a wellbore is generated based at least partly on the values assigned to the global model. Numerical damage models are applied to the global model and sub-model to simulate effects of a hydraulic fracturing treatment on the formation and casing along the planned wellbore trajectory. Casing deformation along the planned wellbore trajectory is estimated, based on the simulation.

Abstract: Methods and systems are presented in this disclosure for feasibility study of cuttings reinjection (CRI) process based on three-dimensional (3-D) geomechanical analysis. A location of an injection well for CRI can be first determined along with a true vertical depth (TVD) interval of an injection section along a trajectory of the injection well. Then, a window of values for an injection pressure for hydraulic fracturing performed in association with the injection well can be calculated. Analysis of fault reactivation due to the hydraulic fracturing can be performed, and a volume of a fracture generated by the hydraulic fracturing can be calculated. CRI for the volume of the fracture can be performed at the determined location of the injection well for the TVD interval, by taking into account the injection pressure window and the analysis of fault reactivation.

Abstract: System and method for predicting the mud weight window in formations, particularly those formations having geologic structures such as salt domes. One embodiment is a computer-implemented method of modeling a formation in 3-D and determining a plurality of effective stress ratios for the modeled 3-D formation using finite element analysis. Thereafter, the trajectory of a proposed wellbore through the 3-D modeled formation is plotted and the specific effective stress ratios along the wellbore are selected to form a data set. The 3-D data set of effective stress ratios is then imported into 1-D modeling software and combined with 1-D data. The combined data is thereafter utilized to estimate the mud weight window for the formation around the wellbore.

Abstract: System and methods for optimizing multistage hydraulic fracturing design based on three-dimensional (3D) continuum damage mechanics are provided. A 3D global model of a field of hydrocarbon reservoirs is generated. A finite element analysis of the 3D global model is performed to calculate values of one or more mechanical variables for the field. A smaller-scale 3D sub-model of a selected portion of the field is generated from the 3D global model based on the calculated values of the mechanical variables. The hydraulic fracturing effects of fluid injection stimulation within the targeted reservoir formation are simulated by applying one or more numerical damage models to the sub-model. Optimal design parameters for multistage hydraulic fracturing of the targeted formation with a plurality of horizontal wells are determined based on numerical results of the simulation.

Abstract: In some embodiments, an apparatus and a system, as well as a method and article of manufacture, may operate to determine a value of strain, such as an equivalent plastic strain, in a perforated portion of a well by applying a set of draw-down pressures to the surface of at least one perforation tunnel in the perforated portion. The perforated portion, in turn, is modeled using stress components provided by a global field model that includes the location of the well, to set boundary conditions at the surface of the well. A well drilling process and a tunnel perforating process are modeled with element removal and pressure addition for the perforated portion. Additional activity may include operating a controlled device based on the value of strain that is determined. Additional apparatus, systems, and methods are disclosed.

Abstract: Systems and methods for wellbore optimization, which include numerical procedures for selecting an optimal wellbore trajectory and casing strength based on Formation Loading Potential.

Abstract: System and methods for optimizing multistage hydraulic fracturing design based on three-dimensional (3D) continuum damage mechanics are provided. A 3D global model of a field of hydrocarbon reservoirs is generated. A finite element analysis of the 3D global model is performed to calculate values of one or more mechanical variables for the field. A smaller-scale 3D sub-model of a selected portion of the field is generated from the 3D global model based on the calculated values of the mechanical variables. The hydraulic fracturing effects of fluid injection stimulation within the targeted reservoir formation are simulated by applying one or more numerical damage models to the sub-model. Optimal design parameters for multistage hydraulic fracturing of the targeted formation with a plurality of horizontal wells are determined based on numerical results of the simulation.

Abstract: A method is provided for determining a mud weight window for an oil and gas well. One implementation of the method includes creating a 3D finite element model for at least a portion of the field in which the well is located. Next, at least three components of stress are determined using the 3D finite element model. The values of at least three of the stress components from the 3D finite element model may then be extracted and integrated with a ID analytical model for the well to determine the mud weight window for the well.

Abstract: This specification describes systems, methods, and software relating to geomechanical modeling of a subterranean region (104). In some aspects, finite difference (FD) grid data (200a) and finite element (FE) mesh data (202a) are received. The FD grid data include FD grid node locations (210) and FD grid values. The FD grid values include values of a subterranean formation property for each FD grid node location. The FE mesh data include FE mesh node locations (212) and spatial domains (214) for each of the FE mesh node locations. Values of the subterranean formation property are generated for each of the FE mesh node locations. The value for a given FE mesh node location is generated based on the FD grid values for FD grid node locations within the spatial domain about the given FE mesh node location. The generated values are assigned to the FE mesh node locations of the FE mesh data (202b) for geomechanical modeling of the subterranean region.

Abstract: System and method for predicting the mud weight window in formations, particularly those formations having geologic structures such as salt domes. One embodiment is a computer-implemented method of modeling a formation in 3-D and determining a plurality of effective stress ratios for the modeled 3-D formation using finite element analysis. Thereafter, the trajectory of a proposed wellbore through the 3-D modeled formation is plotted and the specific effective stress ratios along the wellbore are selected to form a data set. The 3-D data set of effective stress ratios is then imported into 1-D modeling software and combined with 1-D data. The combined data is thereafter utilized to estimate the mud weigh window for the formation around the wellbore.

Abstract: This specification describes systems, methods, and software relating to geomechanical modeling of a subterranean region (104). In some aspects, finite difference (FD) grid data (200a) and finite element (FE) mesh data (202a) are received. The FD grid data include FD grid node locations (210) and FD grid values. The FD grid values include values of a subterranean formation property for each FD grid node location. The FE mesh data include FE mesh node locations (212) and spatial domains (214) for each of the FE mesh node locations. Values of the subterranean formation property are generated for each of the FE mesh node locations. The value for a given FE mesh node location is generated based on the FD grid values for FD grid node locations within the spatial domain about the given FE mesh node location. The generated values are assigned to the FE mesh node locations of the FE mesh data (202b) for geomechanical modeling of the subterranean region.

Abstract: Systems and methods for wellbore optimization, which include numerical procedures for selecting an optimal wellbore trajectory and casing strength based on Formation Loading Potential.