... Abstract In past studies, changes in fluid pressure in natural fractures (planes of weakness) have been ignored for the interaction of hydraulic and natural fractures. To overcome these limitations, in this paper we develop a method to simulate the growth of hydraulic fractures...

... Abstract The paper presents 3D modeling and analysis of a series of hydraulic stimulations conducted at the DOE Utah FORGE EGS site. We have simulated Stage-1 and Stage-3 field stimulations and examined the pressure history, produced fracture geometry, and potential complexity. We use...

...-phase techniques. Introduction Devon Energy have performed 46 so-called ‘refracs’ in the Eagle Ford. A ‘refrac’, or refracturing, refers to the process of performing hydraulic fracturing again on a well that has already undergone the process in the past. It involves pumping a fluid at high pressure...

... is obtained, this model can be used to design a fracturing sequence strategy that would help replicate these results in field applications. This model could also serve as a guide for the completion design needed to recreate the positive production effect. The learnings from this study have the potential...

... Abstract Proppant transport is critical in hydraulic fracturing treatments because it directly affects the effective/propped fracture geometries. While much research has been devoted to proppant transport simulation, the popularity of Eulerian-Lagrangian (E-L) models in proppant transport only...

... Abstract Rock properties are assumed constant or to vary only slightly along a horizontal well placed within a correlative target. However, in the presence of folds, faults and/or fractures, the geomechanical properties can change along the well leading to skewed hydraulic fracture development...

... Abstract Rayleigh Frequency Shift Distributed Strain Sensing (RFS-DSS) has been demonstrated as a potential technology for characterizing fracture geometries and optimizing the completion design in unconventional reservoirs. The combination of RFS-DSS strain and pressure gauge measurements has...

... utilized the geomechanics of the infill well, a depletion analysis, limited entry modeling, and hydraulic fracture modeling to optimize the child well’s completion approach. The optimization workflow applied to the infill lateral was as follows: 1. Derive a high resolution geomechanical and pore pressure...

... of state flow in porous media permeability simulation surfactant enhanced recovery eagle ford unconventional reservoir geology waterflooding shale gas geological subdiscipline wettability alteration chemistry reservoir simulation spontaneous imbibition experiment fracture history plug...

... Abstract Numerical simulation of hydraulic fracture propagation is increasingly used to evaluate the effect of various mechanistic aspects (e.g., inclusion of poroelastic effects, proppant transport, etc.), and of several variables, on the result of a stimulation operation at varying scales...

... Abstract Hydraulic fracture conductivity ( w f k f ) is a critical parameter in completion design of horizontal shale wells. Field evidence and laboratory investigations suggest that these fractures could have finite conductivity values that are influenced by the fracture closure stresses...

... technique used to diagnose completion design efficiency but has been primarily restricted to qualitative analysis. In this study, we apply our novel Green-function based inversion algorithm to calculate fracture geometry (i.e., width) using the Department of Energy sponsored Hydraulic Fracturing Test Site 2...

... Abstract Understanding fracture height growth is critical for optimizing hydraulic fracture treatments and field development. In recent years, Low-Frequency Distributed Acoustic Sensing (LF-DAS) has become a popular tool for monitoring strain changes during hydraulic fracturing. While LF-DAS...

...-resolution gas chromatography for oils and isotopic compositional analyses for gases. A geomechanical analysis was conducted using reservoir mechanical properties and in situ stresses to compare against modeled flowing bottomhole pressures (FBHP) to estimate degree of fracture redilation. Results from...

...-induced matrix microfracturing. The study analyzed parent-child well interactions in detail both during hydraulic fracturing and during depletion. The petrophysical and facies interpretations were revised and refined based on observations from simulation modeling. Multiple conceptual visions...

... a heterogeneous stress profile along the fault. A novel time-step controller is implemented to detect the onset of fracture rupture and nucleation, should they occur. Combining discretization error and Coulomb failure considerations, the controller automatically resolves dynamic rupture with allowable precision...

... Abstract The Najmah-Sargelu (NJSR) are calcareous and kerogen-bearing reservoirs that are deep, tight and highly pressured with matrix permeability in the range of 0.0001 to 0.1 mD. Production from these unconventional reservoirs is mainly dependent on the presence of natural fractures (NF...

... Abstract Currently, the most effective way to extract resources from shale reservoirs is through the use of multi-stage fracturing of horizontal wells. However, the process of flowback after fracturing can affect the extent of damage done by the fracturing fluid to the formation and fracture...

... of natural fractures. Over 500 cemented fractures per 1,000 lateral feet were recognized, and the relationship between the fracture and its fill composition, morphology, bitumen distribution, and orientation angle relative to bedding can explain evolutionary processes of self-induced fracture formation...

... Abstract The Triassic Chang 8 tight sand reservoir in Xifeng block of the Ordos Basin has low permeability, therefore hydraulic fracturing and subsequently water flooding were performed during the development phase. Water breakthrough was encountered for many wells after a short period of oil...