... on such induced seismic events during wastewater disposal in sub-surface formations. The primary objective of this study is to understand the role of pore fluids, in-situ stress, fracture roughness and pore pressure on the shear failure of rock fractures. A new triaxial apparatus is developed that allows us...

... machine learning pressure brine flooding procedure engineering north america government united states government pore pressure interaction Introduction There are several factors including capillary pressure, fluid viscosities, pressure drop, absolute permeability, and relative...

... dynamics reach fracture closure pore pressure closure mechanism barree fracture red curve numerical inversion minimum stress interpretation dfit numerical inversion derivative curve dfit interpretation technique bottom hole pressure permeability estimate blue curve injection permeability...

... optimization will be useful for any future wells to be drilled in this area. This study documents how a 3D geomechanical model helped in the successful delivery of objectives (guided by an understanding of pore pressure and rock properties) through revision of mud weight window calculations that helped...

... mechanical integrity. The work has focused on modeling the increase in pore pressures, the opening of micro-annuli at the cement sheath's boundaries, and the phase changes which take place in the cement when it is heated to high temperature values. To date this work showed that heating cement up to 250°C can...

... of a novel combination of MPD and WS. It emphasizes how MPD can integrate with other technologies to offer a practical solution to future drilling challenges in deepwater-drilling environments. drilling fluid property annular pressure drilling pore pressure well control fluid loss control drilling...

... pressures to identify the reasons of continuous injection pressure increase with increasing cumulative waste volumes disposed, to confirm domain containment, and to predict remaining domain capacity. Transient pressure analysis has revealed that the fracture closure pressure, driven by pore pressure...

.... Therefore, we found that the curing condition is significant to cement mechanical property, and the traditional cooling or depressurization method could provide mechanical properties that were quite different (50% difference) from the in situ measurement. wellbore integrity pore pressure situ...

... saturation, total porosity, volume of clay, and total organic carbon from petrophysics logs. Then, we consider a geomechanics use case on a conventional offshore dataset to predict the lithology, pore pressure, and rock mechanical properties. We obtain a good prediction performance on both use cases...

... and heterogeneous formations require advanced methods for understanding the impacts of spatial distribution of rock components, pore structure, and pore pressure on mechanical properties. However, the existing methods for assessment of mechanical properties (e.g., effective elastic properties) such as effective...

... the application of Diagnostic Fracture Injection Tests (DFIT), one can determine accurate estimates of closure pressure, net pressure, pore pressure, formation permeability, and induced fracture geometry. The Utica shale is among the most promising reservoirs of the future, but there is limited information...

... hole-sections from different offsets. reservoir characterization machine learning well planning neural network natural language structural geology pore pressure ranking deep learning well list well analysis directional drilling trajectory design well analysis workflow drilling...

.... In this study, we present a new approach to model and analyze pressure decline data that is available at the end of each plug and perf stage in horizontal wells. The new model, interpretation method and specialized plots presented in this study allow us to quantify closure stress, average pore pressure inside...

... Abstract Ledong HPHT gas field in Yinggehai basin of South China Sea. The pore pressure ramp above the over-pressured target sand with narrow safe mud weight window lead to high drilling risk. To improve drilling safety, multiple steps and approaches were taken in real-time monitoring of pore...

... Abstract Knowledge of pore pressure, in-situ stress, and lithology in unconventional reservoirs is important for safe and economic drilling, hydrocarbon production, and geomechanics applications such as wellbore stability analysis and hydraulic fracturing. Reliable predrill predictions of pore...

.... reservoir characterization drilling operation pore pressure wellbore integrity upstream oil & gas sand control wellbore design formation temperature borehole mpa near-wellbore zone transition temperature diameter thermosensitive screen expansion process outer diameter formation stress...

... is for a faulted reservoir zone of the Aphrodite field, located in the Eastern Mediterranean. The study is based on finite element modelling using 2D plane strain analysis that incorporates pore pressure and elastoplastic deformation of reservoir and overburden rock formations using the Drucker-Prager plasticity...

... 60 minutes. The steps to do this and the follow-on stress characterization were as follows: In this test, the undrained condition is controlled so there is no fluid exchange between the pump and cement during the setting process. As shown in the middle plot of Fig. 4 , the bottom pore pressure...

... investigations related to gas flow and recovery. The pulse-decay technique is initially used to quantify apparent porosity, permeability, and adsorption for He, N 2 , Kr, CH 4 , and CO 2 at room temperature (and 42 °C in some cases) up to 800 psia pore pressure. In the case of Kr, Eagle Ford core (EF1...

... distribution and evolution during production. Another disadvantage of the abovementioned models is that the rock permeability is considered to be influenced only by the local pressure change, which is, in fact, inadequate. Because the stress state of a point in the subsurface rock depends on the pore pressure...