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          • Term
            • porowatość
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          • Definition(s)
            • Stosunek objętości porów, czyli pustek (wolnych przestrzeni) skały do całej objętości skały zbiornikowej, którą mogą zajmować gaz, ropa, woda; podawany najczęściej w postaci procentowej. Own research - by barwin
          • Example sentence(s)
            • Do najważniejszych parametrów charakteryzujących strukturę materiałów porowatych należą: - porowatość objętościowa, - przepuszczalność, - powierzchnia właściwa. - INSTRUKCJA DO ĆWICZEŃ by barwin
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    • Romanian
      • Petroleum Eng/Sci
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          • Term
            • porozitate
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            • Porozitatea reprezinta raportul dintre volumul total al porilor, fisurilor, golurilor si volumul total al rocii. Dictionar geotehnic. Termeni geotehnici. Dictionar geotehnic - by Cristian Nicolaescu
          • Example sentence(s)
            • porozitate, (engl.= porosity) caracter structural al rocilor prin care se apreciaza volumul golurilor (Vg) in raport cu volumul total al rocii (Vb), dupa relatia: P = Vg/Vb. Golurile pot fi izolate sau pot comunica intre ele. „Coeficientul de p. sau porozitatea" poate fi: p. absoluta (Pa) - raportul dintre volumul tuturor porilor (Vp) si volumul brut al rocii (Vb), conform relatiei: Pa = Vp/Vb si p. efectiva (Pe) - raportul dintre suma volumelor tuturor spatiilor goale care comunica intre ele (Vl) si volumul brut al rocii, conform relatiei: Pe = Vl/Vb. P. dinamica permite aprecierea volumului porilor prin care se realizeaza o deplasare efectiva a fluidelor intr-o roca. P. poate fi primara sau remanenta (exprima - in cazul rocilor sedimentare detritice - spatiile ramase dupa acumularea clastelor) si secundara sau postdepozitionala (aparuta ca efect al dizolvarii selective a cristalelor constituente ale liantului dintre granule). P. unui sediment scade progresiv cu adancimea de ingropare a acestuia; ea variaza in limite largi, in functie de natura mineralogica a sedimentului. Sedimentele si rocile argiloase au p. intre 25-90%, nisipurile intre 30-50%, pietrisurile slab sortate intre 25-35%, loessul intre 40-60% etc. - THE GEO SERVER OF BUCHAREST UNIVERSITY by Cristian Nicolaescu
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