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Showing 1 to 20 of 48 for “"Hydraulic fractures"”.
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Dimensionless groups for interpreting proppant transport in hydraulic fractures
Includes bibliographical references (pages 137-142).
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Methods and systems for ballooned hydraulic fractures and complex toe-to-heel flooding
… between 5% and 10%, and around 70% of the hydraulic fractures created in such reservoirs do not produce. To increase hydrocarbon recovery from both conventional and unconventional reservoirs, this dissertation develops two completion strategies that are each more productive than existing …
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Numerical simulation of fluid flow, proppant transport and fracture propagation in hydraulic fractures for unconventional reservoirs.
The distribution of proppant injected in hydraulic fractures significantly affects fracture-conductivity and well-performance. The proppant transport and suspension in thin fracturing fluid used in unconventional reservoirs are considerably different from those of fracturing fluids in conventional …
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Impact of Stress-field Changes Induced by Hydraulic Fracturing on Subsurface Fault Stability
Hydraulic fracturing is essential for economically producing hydrocarbons from shale reservoirs, and thus has been extensively used in completion of shale gas wells. However, fracturing formations can change in-situ stresses in the surrounding areas. There are concerns that hydraulic fracturing may …
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Simultaneous Multiple Plane to Plane Waterflooding in Fractured Tight Reservoirs
… and two injectors) with multiple transverse hydraulic fractures nested to create arrays of plane-to-plane injector-producer waterflood displacements between propped hydraulic fractures. The model for each plane-to-plane displacement uses pseudorelative permeability functions to account for …
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Fracture optimization based on gradient descent methodology
Knowing that determining the geometry of the hydraulic fractures with horizontal wells is demanding yet challenging for petroleum engineers, in this thesis we have developed a computer program to automatically optimize the length, the conductivity as well as the spacing of hydraulic fractures in …
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Numerical Simulation of pressure Transient Analysis in Tight Formation and Field Data Categorization and Typical Well Production Data Analysis
… effective permeability that is often enhanced by hydraulic fracturing. Unfortunately, limited productivity and unfavorable economics often prevent expenditures of money and time to collect the dynamic data needed for a comprehensive reservoir study. Horizontal well completion along with …
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Image-Based Pore-Scale Modeling of Inertial Flow in Porous Media and Propped Fractures
… flow is often observed near wellbores and in hydraulic fractures where relatively high velocities occur. Quantifying additional pressure drop caused by non-Darcy flow and fundamentally understanding the pore-scale inertial flow is important to oil and gas production in hydraulic fractures. …
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Post-treatment horizontal hydraulic fracture modeling with integrated chemical tracer analysis, a case study
… the use of chemical tracers in unconventional hydraulic fracturing operations is relatively new. With the increasing use of chemical tracers in unconventional settings, questions related to the proper execution, interpretation, and integration of chemical tracer tests arise. The first part of …
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Simulating and diagnosing three-dimensional multistage hydraulic fracturing with the generalized finite element method
Hydraulic fracturing is the process in which a fracture propagates through the injection of pressurized fluid in its cavity. This technique allows one to considerably enlarge the accessible reservoir volume by the injection of fluid along with the isolated segments of the wellbore into the …
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A CG-FFT Based Fast Full Wave Imaging Method and its Potential Industrial Applications
… in the oil and gas industry for through casing hydraulic fracture evaluation. This system is established to validate the feasibility of contrasts enhanced fractures evaluation. On the other hand, this work proposes a FFT based VIE solver for hydraulic fracture evaluation. This efficient solver …
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An integrated peridynamics-finite volume based multi-phase flow, geomechanics and hydraulic fracture model
Hydraulic fracturing in unconventional reservoirs exhibits several interesting phenomena including the interaction of hydraulic fractures with multi-scale heterogeneities such as natural fractures, stress/barrier layers, bedding planes, shale laminations, and mineralogy. Moreover, hydraulic …
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A generalized finite element method for the simulation of non-planar three-dimensional hydraulic fracture propagation
Hydraulic fractures are a class of tensile fractures that occur in brittle and quasi-brittle materials due to the injection of a viscous fluid. Hydraulic fractures occur both naturally and created deliberately for engineering applications. In the oil and gas industry, it is a preferred method to …
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Propagation of fluid driven fractures in transversely isotropic material
The propagation of fluid driven fractures is used in a number of industrial applications (well stimulation of unconventional reservoirs, development of deep geothermal systems) but also occurs naturally (magmatic dyke intrusion). While the mechanics of hydraulic fractures (HF) in isotropic media is …
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Pressure- and rate-transient model for interfering horizontal wells
… by increasing surface area for fluid flow. Hydraulic fracturing creates or rejuvenates the existing network of fractures surrounding the hydraulic fractures and horizontal well and forms a stimulates reservoir volume (SRV) around the well. The combination of the wellbore features, hydraulic …
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The Application of Single porosity Model to Predict the Performance of the Low Permeability Naturally Fractured Formations
… in the form of horizontal drilling and hydraulic fracturing (fracturing through the use of high pressure liquids) has overcome the flow capacity problem of shale to achieve economic production. The low permeability shale formations, such Marcellus Shale, contain a natural fracture system …
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Non-destructive evaluation of laboratory scale hydraulic fracturing using acoustic emission
… is to develop techniques to characterize hydraulic fractures and fracturing processes using acoustic emission monitoring based on laboratory scale hydraulic fracturing experiments. Individual microcrack AE source characterization is performed to understand the failure mechanisms associated …
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Model Calibration and Performance Optimization Using Multiple-Point Geostatistics and Machine Learning Techniques
… model complex fracture networks around primary hydraulic fractures using multiple-point geostatistical algorithms. Secondary probability maps, which can be derived from microseismic events, are also included in the modelling process to account for the variability in the extent of the induced and …
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Impact of Hydraulic Fracture Conductivity Modeling on Well Performance and Development in Unconventional Reservoirs
… to better represent subsurface behavior. Because hydraulic fractures provide the primary pathways for fluid flow in unconventional reservoirs, accurately modeling fracture geometry and conductivity is essential for generating reliable reserves, production forecasts, and field development plans. …
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Effect of flaw shape and penetrating fluids on hydraulic fracture initiation and propagation in porous material (gypsum)
… oil and gas resources since the 1980s. Hydraulic fracturing is the process employed to extract hydrocarbons from these formations, which mostly characterize with a low permeability. The extension of this technique arose the necessity for the Rock Mechanics field of a better and complete …
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