... mechanisms of CO 2 -water-oil displacement. The study also discusses fault and fracture stability assessment and monitoring techniques for CO 2 injection and storage. The differences between CO 2 storage in unconventional reservoirs and saline aquifers or conventional reservoirs are highlighted...

... throat size, and displacing velocity), and the diffusion term (governed by bulk fluid diffusivity and matrix tortuosity). Previous studies suggest that within nanoscale porous media, diffusion can be the dominant drive mechanism. In this study, we investigate the impact of diffusion on gas injection...

... be negatively affected and cannot be solely attributed to stolen reserves from the child well. Numerous damage mechanisms are identified with the two most dominant mechanisms being capillary phase trapping and fracture conductivity damage from FR-iron gels. Multiple surfactant-nanoparticles chemistry...

... daily shale gas production using static and dynamic variables. This algorithm synthetically combines parameters in different dimensions using encoding mechanisms, gated networks, LSTM network, and multi-head attention. These mechanisms ensure full information integration while prevent overly complex...

... reservoir mechanisms observed in response to gas injection EOR operations. Produced fluids were collected before and after gas injection and analyzed using time-lapse geochemistry (TLG) to determine the degree of mixing between the injectant and in situ hydrocarbons. The TLG program consisted of high...

... damage enhanced recovery reservoir characterization concentration chemical flooding methods thermal method production monitoring canada government dispersion penetration stimulation mechanism workflow chemical-in-gas dispersion limitation permeability durability exhibition production...

... resource development focuses on primary depletion utilizing the initial reservoir energy to drive oil through complex fracture networks created through hydraulically fractured completions. Even though solution gas drive is an effective primary depletion mechanism, it can produce a small fraction...

... that takes into account all the major contributing mechanisms of enhanced gas recovery and CO 2 sequestration in shale gas. The CO 2 -EGR-CCUS process is divided into pe-riods of primary production, CO 2 huff and puff, and CO 2 sequestration. Firstly, a dual-porosity, dual-porosity-dual-permeability model...

... so that preventive actions can be taken to minimize the downtime. This work first leveraged transient simulations (OLGA) to probe the mechanism of shut-in induced liquid loading in unconventional wells with long laterals. Based on the acquired insights, various machine learning models, including...

... producers trying to minimize H 2 S in their wells. The goal of this work was to provide insight into one of the potential mechanisms that caused H 2 S generation in the BPS. This insight will enable more effective H 2 S mitigation and management strategies. Many operators consider the Madison petroleum...

... due to the variability in downhole conditions and stimulation fluids. Biasing forces in the mechanical systems posed issues passing through upper completion components when the dart passed in a compressed state. The geometry of the activation dart introduces new challenges for ensuring successful...

... fractures or possible faults are present in the overlying Lamar Formation. In Formation A, MSR is the key generative mechanism of high H 2 S in the produced gas. During early diagenesis, sulfate-bearing water percolated from overlying anhydrite into the reservoir and sulfate was reduced microbially by using...

... imbibition is the main mechanism by which fracture fluid enters the rock. Herein we study the spontaneous imbibition of brine to determine the flow mechanism and uptake capability of fracturing fluid in unconventional source rocks. We used NMR spectroscopy and imaging methods to track the spatial...

... that the probability of coincidence of conditions favorable for excessive deformation is small. It seems that the plausible mechanism of excessive casing deformation is caused by coincidence of: 1) relatively large increase in the axial force (e.g., due to presence of poor-quality rock along the wellbore), 2) some...

..., the complex natural fracture (NF) network, and non-Darcy flow mechanisms encountered in the nanopores remain challenging. In addition, NFs could be reactivated through shearing, dilation, and extension during hydraulic fracturing. In this study, detailed mechanistic models are employed to examine the effects...

..., the fundamental mechanistic understanding of the process is limited. Huff and Puff is often modeled using reservoir simulation, which inherently have uncertainties due to gridding choices and constraints. This work describes an experimental approach to evaluate the underlying mechanisms controlling the Huff...

... mechanisms difficult. This paper presents a simulation study where complex mechanisms and interactions are represented, including multiple ion exchange, mineral dissolution, wettability alteration, fine migration, pH variation, and electrical double layers. The models are used to examine how the salinity...

...) and the presence of sand were used to simulate field conditions. Temperature, TDS, and presence of sand all had a large impact on CI performance in this study. In particular, the presence of sand jeopardized CI performance, changing the final CI ranking. A proposed mechanism for this phenomenon is through...

... Abstract Objective In this paper we present recent work leveraging the advances in deep learning to propose a novel deep convolutional neural network Focal Mechanism Network (FMNet) for estimating the location, magnitude and source focal mechanisms of earthquakes rapidly, using full...

... of the volume of additional hydrocarbons that might potentially be recovered. This is not always an easy task, however, as properly executed, mechanically isolated refracs within a reasonable offsetting distance are sometimes scarce. To enable economic evaluations in such situations, Barba and Villarreal (URTEC...