دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a large igneous intrusion that cuts through the sedimentary layers, creating permeability barriers.

n: a hindrance to movement of fluids within the formation rock of a reservoir. Permeability barriers include obvious problems, such as shale lenses and calcite or clay deposits, and less obvious ones, such as porosity changes.

n: packed bed that surrounded permeable bed, it is impervious bed or poor permeable bed.




a barrier to movement of a fluid through the rock. This may be a change in the rock where the pores are no longer connected or even present, or secondary mineral growth that filling in the pore throats and natural fractures. In one sense, a permeability b

n: a logarithmic plot of bottornhole buildup pressure versus time. Pressure buildup plots are useful in analyzing formation test data for values used in calculating reservoir permeability, formation damage, radius or investigation during the formation test, reservoir depletion, and permeability barriers and other flow irregularities near the wellbore.

n: an irregular surface, generally parallel to a depositional layer, in which small, toothlike projections on one side of the surface fit into cavities of complementary shape on the other surface.

a pressure dissolution feature in a layered reservoir, often a vertical permeability barrier.