... Abstract Hydraulic fracturing treatments in unconventional infill (or "child") wells can be significantly affected by depletion from existing parent-well, resulting in asymmetrical fracture growth. These issues may lead to excessive load-water production, proppant deposition, casing deformation...

... polymers can maintain viscosity and stability at temperatures exceeding 350°F (177°C), and new drilling fluids have been successfully tested in geothermal wells with bottom hole temperatures up to 400°F (204°C). Moreover, hydraulic fracturing techniques, widely used in the oil and gas industry, are being...

... and basic hydraulic fracture design parameters for the 48 wells. Table 1 Overview of Completion Design Depending on the pad, Burkett wells were either stacked directly on top of Marcellus wells or staggered/wine racked. Table 2 illustrates the relative location, spacing bins...

... Abstract Hydraulic fracturing near depleted fractured rocks is a major cause of fracture hits, leading to damage in parent wells and reduced fracture efficiency in the child well due to significant fluid and proppant losses to the parent well. This behavior is exacerbated by tight well spacing...

... Figure 8 Example of the identification of critically stressed fractures using a Mohr-Coulomb stress diagram. For each fracture, the effective normal stress expressed as a fraction of overburden (S n – P p /S v ) is plotted on the horizontal axis and the shear stress expressed as a fraction...

... ), (2) q ( t ) = q i ( 1 + b D i t ) 1 / b , Abstract This study focuses on the optimization of child well spacing to mitigate fracture hits caused by hydraulic fracturing near depleted fractured rocks. Fracture hits lead to damage in the parent wells...

... are roughly double those of the Midland Basin ( Gaswirth et al. 2018 ). With the recent advancement in drilling and completion technologies, specifically horizontal drilling and hydraulic fracturing technique, the Third Bone Spring Sand in the Delaware Basin has become one of the most rapidly developing...

... in the evaluation of which completion technique is most effective for large volume fluid injection. Hall Plots were generated to compare openhole and cased hole SWIWs, but will not be the focus of this paper. A review of physical reservoir properties and fracture modeling were used to estimate three-dimensional...

...Fracture Map Parameterization In step 4, we adopted Deep Learning Model to parameterize the fracture network distribution. Specifically, we leveraged the Variational Autoencoder (VAE) model (Diederik et al. 2013) to map the fracture distribution to a latent space with lower dimension. Previous...

... Abstract Economic optimal recovery of hydrocarbons from unconventional reservoirs requires consistent and sufficient stimulation energy across an entire drill spacing unit (DSU), both along laterals and between them. This necessitates an understanding of how and why fractures propagate away...

... is comparable to or higher than the parent well. The interplay of numerous subsurface elements such as structure, the natural fracture system and faults, in-situ stresses, rock properties and depletion-induced effects impact the stimulated rock volume and ultimately well production. A review...

... The in-house pseudo-3-dimension fracture simulator is based on the PKN (Perkins-Kern-Nordgren) model. The detailed numerical workflow is similar to that of the 2D numerical fracture model discussed in the previously published papers ( Gu and Mohanty 2013 ). In this study, the 2D model is extended...

...Sonic Scanner Logs Young's modulus and Passion's ratio were obtained from the sonic scanner log measurements ( El Sgher et al., 2021c ). Diagnostic Fracture Injection Test (DFIT) Instantaneous Shut-in Pressure (ISIP), Closure Pressure (P c ), Process Zone Stress (PZS) were determined...

... Table 1 Parameters used in shale reservoir modeling Re se noir Characteristics Depth (ft) 6508 Porosity (%) 0.0971 Porosity fracture (%) 0.001 Permeability (md) 0.00063 Pemieability fracture (md) 0.002 Fracture spacing (ft) 50 Net thickness (ft) 151...

... such that the induced hydraulic fractures grow parallel to the maximum horizontal stress during completion ( Zinn et al., 2011 ). As such, collection and interpretation of image logs from a representative set of pilot holes for determination of horizontal stress orientation are now a typical procedure in the early...

... Abstract Low injected fracturing fluid recovery has been an issue during flowback period that is highly impacted by the fracture closure behavior. Although existing flowback models consider fracture closure volumetrically, they do not represent the true situation of non-uniform fracture closure...

... dimensional formulation is considered here for the application of matrix-fracture cross mass transfer. Note that the rock matrix can also consist of different regions with different average pore sizes. Both convection and molecular diffusion terms are included in the mass balance equations, while different...

... Abstract Due to the complexity of shale reservoir geology, hydraulic and micro-fractures can be coupled into an extremely complex symmetrical or asymmetrical fracture network around vertically fractured wells (VFW) after fracturing. The important and useful work is to analyze the transient...

... Abstract This paper presents a method for examining the potential of fracture stimulation in horizontal wells targeting unconventional oil plays. The observation of crossflow among fractures has been of great concern as this phenomenon affects the productivity of producing wells. The cause...

... Abstract Complex Toe-to-Heel Flooding (CTTHF) is a short distance flooding technique developed by the authors for sandstone formations. CTTHF applied on horizontal wells and requires at least one barrier and injector hydraulic fracture, also it requires at least one method to control early...