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- W123905189 abstract "Various shapes of moving salt were simulated in response to gravity contrast and tectonic movement, and the deformations and fractures of the surrounding sediments examined. The varying parameters in the model include the burial depth of the salt base, the overhang depth of the salt cap, the salt body's size, the salt speed, and the sediment depositional rate, as well as variation of the surrounding rock properties with depth, such as Lame constants, shearing strength and internal friction. Mohr's criterion for failure was applied, allowing an indication of where fractures occur and their orientations. Including the thermal effects, salt yields features favorable to hydrocarbon accumulation as shown by the simulations: (1) fractures occurring near the vertical salt body and below the mushroom salt cap provide a continuous pathway for hydrocarbon migration due to the enhancement of permeability; (2) the overhanging salt cap sheet provides a potential seal for the accumulations; (3) the thermal effect of salt enhances the maturity of the source rocks; and (4) the observed faulting around the salt are accounted for by primary and secondary fractures, as exhibited through the simulations. In this study of Barents Sea, Norway, we find that the salt probably started to rise during the Early-Mid Triassic and Jurassic when the sediment cover was 1700-2400 m. Depositional faulting was associated with salt diapir motion. The modelling also indicates that at least 1000 m of the salt cap was eroded, based on the dip angles of sedimentary strata against the salt stock." @default.
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- W123905189 date "1993-01-01" @default.
- W123905189 modified "2023-09-27" @default.
- W123905189 title "Salt dynamics: simulation of mushroom cap on a salt diapir in Barents Sea, Norway" @default.
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- W123905189 doi "https://doi.org/10.1016/b978-0-444-88943-0.50044-7" @default.
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