Topic
Overpressure
About: Overpressure is a research topic. Over the lifetime, 3236 publications have been published within this topic receiving 34648 citations.
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TL;DR: In this paper, a theoretical pore pressure-porosity model is proposed based on the primary overpressure generation mechanism, which provides a much easier way to handle normal compaction trendlines.
343 citations
Patent•
21 Jun 1976
TL;DR: In this article, a process and apparatus for the combustion of pulverized coal is described, where the coal is introduced into a conditioned atmosphere having an overpressure, the overpressure being used to accelerate a flame jet, and the flame jet is injected into an atmosphere having a temperature below the ash melting temperature of the fired coal.
Abstract: This invention relates to a process and apparatus for the combustion of pulverized coal, wherein the pulverized coal is introduced into a conditioned atmosphere having an overpressure, the overpressure being used to accelerate a flame jet, and wherein the flame jet is injected into an atmosphere having a temperature below the ash melting temperature of the fired coal.
282 citations
01 Jan 2001
228 citations
TL;DR: In this article, Brittle-failure-mode plots demonstrate that maximum overpressure is inversely related to the level of differential stress and that high overpressures are easier to sustain in compressional regimes.
Abstract: Formation or reactivation of brittle faults and fractures within low-permeability rocks capping regions of overpressured crust creates drainage conduits limiting the degree of overpressuring. Maximum sustainable overpressure is therefore affected by the local state of stress within the capping layer and by any existing architecture of faults and fractures. Reshear of existing cohesionless faults that are favorably oriented for frictional reactivation within the stress field provides the lower limiting bound to overpressures and inhibits development of other brittle structures. Formation of drainage conduits by hydraulic extension fracturing is important only in the case of intact caprock under low differential stress. Brittle-failure-mode plots demonstrate that maximum overpressure is inversely related to the level of differential stress and that high overpressures are easier to sustain in compressional regimes. Changes in the regional stress state in areas of overpressuring (for example, during tectonic inversion) may induce significant fluid redistribution.
190 citations
TL;DR: In this paper, the effect of an inclined aquifer ranges from being minimal to being a significant contributor to crestal pore pressures depending on the style of structural evolution, the burial rate and the aquifer relief.
186 citations