Topic
Overpressure
About: Overpressure is a research topic. Over the lifetime, 3236 publications have been published within this topic receiving 34648 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the authors systematically studied the effects of overpressured fluid activities on the diagenesis and diagenetic evolution of reservoirs in the DF11 Block of the Yinggehai Basin, the South China Sea.
21 citations
TL;DR: Hexagonal boron nitride atomic layers are synthesized on polycrystalline copper foils via a novel CVD process that maintains a vapor-phase copper overpressure during growth, resulting in a >10× reduction of 3-dimensional BN fullerene-like surface features.
Abstract: Hexagonal boron nitride (h-BN) atomic layers are synthesized on polycrystalline copper foils via a novel chemical vapor deposition (CVD) process that maintains a vapor-phase copper overpressure during growth. Compared to h-BN films grown without a copper overpressure, this process results in a >10× reduction of 3-dimensional BN fullerene-like surface features, a reduction of carbon and oxygen contamination of 65% and 62%, respectively, an increase in h-BN grain size of >2×, and an 89% increase in electrical breakdown strength.
21 citations
01 Aug 1990
TL;DR: In this paper, a 3D parabolized Navier-Stokes (PNS) code was used to calculate the supersonic overpressures from three different geometries at near and mid-flow fields.
Abstract: A 3-D parabolized Navier-Stokes (PNS) code was used to calculate the supersonic overpressures from three different geometries at near- and mid-flow fields. Wind tunnel data is used for code validation. Comparison of the computed results with different grid refinements is shown. It is observed that a large number of grid points is needed to resolve the tail shock/expansion fan interaction. Therefore, an adaptive grid approach is employed to calculate the flow field. The agreement between the numerical results and the wind tunnel data confirms that computational fluid dynamics can be applied to the problem of sonic boom prediction.
21 citations
TL;DR: In this article, a coupled geomechanical-fluid flow model is used, along with an advanced version of the Cam-Clay constitutive model, to investigate stress, pore pressure and porosity in a Gulf of Mexico style mini-basin bounded by salt subjected to lateral deformation.
21 citations
TL;DR: In this article, the authors applied a modified acoustic-velocity and effective-stress diagram to identify the overpressure transfer in the study area and analyzed the cause of the overpressured aquifer at the crest of the anticline.
Abstract: The origin of the overpressure in the northern Qaidam Basin has not been clearly understood, which has caused some difficulties in hydrocarbon exploration. Using a compaction study, we applied a modified acoustic-velocity and effective-stress diagram to identify the overpressure transfer in the study area. This phenomenon has not been discussed in previous studies. For the present study, we approximately calculated the magnitude of the transfer overpressure and analyzed the cause of the overpressured aquifer at the crest of the anticline in the study area. Our study indicates that the effect of overpressure transfer is very distinct, and the largest contribution to the total overpressure is 57%. The main media of overpressure transfer include vertical faults and lateral conducting layers. The vertical faults can connect deep overpressured strata, and the lateral conducting layers can connect overpressured strata at the top and wing of the anticline. During anticline formation, the crest fractures, and then the overpressured water in the anticline wing flows into the fractured crest and forms the overpressure compartment that prevents the charging of deeper natural gas.
21 citations