... ABSTRACT: The conventional fracturing mode faces some problems, such as the low complexity of artificial fracture and rapid production decline after fracturing. The multi-well pad fracturing is a crucial technology for effectively developing unconventional reservoirs such as shale and tight...

... ABSTRACT: Migration and packing patterns of proppants play a critical role in the conductivity of hydraulic fractures and unconventional oil and gas production. However, the fracture surface is usually tortuous with gradually narrow walls (tortuous - wedge fractures). Existing fracture models...

... ABSTRACT: Fuxing continental shale is characterized by poor physical property, strong heterogeneity, low brittleness index, and poor compressibility. Based on the concept of integrated geological and engineering, differential staged fracturing technology of horizontal well was proposed...

... ABSTRACT: Reliable prediction and uncertainty quantification of hydraulic fracture propagation behavior are crucial aspects of unconventional reservoir development, however, their implementations are largely restricted by the huge computational cost of the high-fidelity model simulations. We...

... environment readily form H-O bonds and C-H bonds on the surface of calcite, with H-O bonds binding to Ca atoms, accelerating the fracture of Ca-O bonds. In a carbonate environment, H atoms infiltrate the interior of calcite more rapidly, binding with C and O atoms, creating crystal vacancies, and intensifying...

... consumption currently being used for heating and cooling, this represents an important path to reducing greenhouse gas (GHG) emissions. The concept of FTES is to drill two or more wells into a low permeability formation and then generate hydraulic fractures to create flow paths for water to circulate between...

... up to 97500 N, each rock type released helium at a rate quantifiable using a helium mass spectrometer leak detector. For plutonic rock like granite, helium flow rate spikes with the application of force as the samples elastically deform until fracture, then decays slowly until grain breakdown...

.... When a jointed rock mass undergoes environmental stressors, the generated tensile and shear cracks through intact rock blocks and pre-existing discontinuities determine the mechanisms and implications of the consequent slope failure. However, predicting fracture evolution, corresponding stress transfer...

... ABSTRACT: Hydraulic fracturing is an essential stimulation technique for the effective exploitation of tight oil and gas reservoirs. The fracturing performance is closely related to the degree of reservoir remodeling. However, the mechanical mechanisms of fracture propagation and permeability...

..., and experimental studies. The test has been deployed for various materials such as rock and concrete; however, its fracturing process at micro and macro scales has not yet been thoroughly characterized. In this study, a coupled experimental-numerical technique was used to characterize the failure process...

... and geothermal exploitation. In this study, the staggered and monolithic solution schemes are developed in the context of poroelastic and fractured geomaterials, and the applicability of the two solution schemes is analyzed in detail. It is found that the degree of coupling between primary variables plays...

... and efficient drilling. drilling fluid formulation intrusion complex reservoir drilling operation phyllosilicate drilling fluids and materials drilling fluid selection and formulation wellbore integrity geology mineral hydraulic fracturing reservoir geomechanics geologist geological...

... ABSTRACT: In our previous work, an improved fracturing treatment, which combines a mixture of solid delayed acid generating material (SDAGM) with microproppants in the pad/pre-pad fluids during the engineering process, was demonstrated to be an effective technology by a series of laboratory...

... fracture reservoir characterization construction plate tectonics excavation shaft geologist hydraulic fracturing geological subdiscipline excavation sequence operator catwalk seismicity rock mechanic science shotcrete bowling international journal confinement rockburst orientation...

... significant challenges, including low production. Hydraulic fracturing is considered a potential key technology for increasing the production of NGH reservoirs. Understanding the characteristics of fracture initiation and expansion is crucial in determining the efficiency of production enhancement. To address...

... ABSTRACT: Simultaneous fracturing and zipper fracturing of horizontal wells has rapidly evolved to the development of unconventional oil and gas. The fracture interference when multiple fractures propagate needs further study. This paper experimentally investigates the sequential propagation...

... ABSTRACT: In the process of fracturing construction, the injection of high-pressure fluid will lead to the propagation of fractures at the first and second interfaces of the wellbore cement sheath, which seriously affects the integrity of the wellbore, and even cause the interlayer channeling...

... ABSTRACT: Volumetric fracturing technology is an effective tool for shale oil exploration. The developed bedding planes and strong inhomogeneity of continental shale make them limited in fracture seam height propagation, which restricts the efficient extraction of shale oil. To better...

... ABSTRACT: Detection of underground nuclear explosions (UNEs) require a sophisticated understanding of gas transport through fractured geological media. This is because surface detection of some signature gaseous radionuclides, such as xenon, is a strong indicator of a subsurface nuclear event...

...) is more suitable as it treats the rock as a combination of rigid bodies, effectively modelling discontinuities. This paper examines wellbore stability in fractured formations using DEM. It first analyzes the drilling characteristics of broken formations and then studies fracture data from the Tarim...