Browsing by Subject "cap-rock filtration parameters"

Now showing 1 - 1 of 1

Access status: Open Access ,
Using in oil and gas industry of experimentally determined filtration parameters of cap-rocks
(2008) Pilip, Âroslav; Danilenko, Vitalij
Experimental determination of cap-rocks filtration parameters initiated only in the end of 60-th of the past century is being carried out in separate laboratories all over the world and includes measurements of absolute gas permeability K/per and inrush pressure drop Delta/P/in hydrocarbon fluids through water saturated rock samples. The values K/per for cap-rocks in various regions of Ukraine are within the limits from 10-3 to 10-11 mim2 , and Delta/P/in - from 1-2 MPa to 20-40 MPa. These data are used for determination of hydrocarbons migration conditions, formation and conservation of their pools, solving the tasks of oil and gas prospecting, designing and exploiting of underground gas storages (UGS). Particularly, possible volumes of oil and gas migration were evaluated, which turned out to be considerable-through the area of conditional cap rock only 1 km2, thickness 50 m and permeability 10-8 mim2 at pressure drop IMPa can be filtered near 80 billion m3 of gas or 8 million m3 of oil for the period of 1 million years. The possibility of increasing the pressure and gas storing volumes in separate UGS of Precarpathians by 20-30% as compared to the projected values has been experimentally proved.