caa a22 4500 445300957 CHVBK 20180317142557.0 cr unu---uuuuu 170323e20100501xx s 000 0 eng 10.1007/s11430-010-0020-4 doi (NATIONALLICENCE)springer-10.1007/s11430-010-0020-4 Effects of hydrocarbon physical properties on caprock's capillary sealing ability [Elektronische Daten] [LinYe Zhang, YouShu Bao, Qing Liu, ShouChun Zhang, RiFang Zhu, Lei Zhang] A new mechanics formula of caprock's capillary sealing ability has been established in this paper, in which the boundary layer resistance was considered and characterized by starting pressure gradient. The formula shows that capillary sealing ability of caprock is determined not only by the capillary force of rock and the buoyancy of hydrocarbon column, but also by the starting pressure gradient of hydrocarbons and the thickness of caprock. The buoyancy of hydrocarbon column, the starting pressure gradient of hydrocarbon, and the capillary force of caprock are affected by hydrocarbon density, hydrocarbon viscosity, and hydrocarbon-water interface tension respectively. Based on hydrocarbon property data of reservoirs of Jiyang Depression and equations from literature, the effects of hydrocarbon density, hydrocarbon viscosity, and hydrocarbon-water interface tension on the sealing ability of caprock are analyzed. Under formational conditions, the sealing ability of oil caprock can vary up to dozens times because of the variations of the oil density, oil viscosity, and oil-water interface tension. Thus, the physical characters of hydrocarbon should be considered when evaluating the capillary sealing ability of caprocks. Study of the effects of physical characters on sealing ability of caprock can provide guidance to exploring special physical property hydrocarbon resources, such as viscous oils, and hydrocarbon resources in special pressure-temperature environments. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 caprock nationallicence capillary sealing ability nationallicence boundary layer resistance nationallicence starting pressure gradient nationallicence hydrocarbon physical property nationallicence non-Darcy flow nationallicence heavy oil nationallicence Zhang LinYe Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut Bao YouShu Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut Liu Qing Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut Zhang ShouChun Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut Zhu RiFang Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut Zhang Lei Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut Science China Earth Sciences SP Science China Press 53/5(2010-05-01), 665-671 1674-7313 53:5<665 2010 53 11430 https://doi.org/10.1007/s11430-010-0020-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-0020-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang LinYe Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut NATIONALLICENCE 700 1- Bao YouShu Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut NATIONALLICENCE 700 1- Liu Qing Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut NATIONALLICENCE 700 1- Zhang ShouChun Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut NATIONALLICENCE 700 1- Zhu RiFang Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut NATIONALLICENCE 700 1- Zhang Lei Geology Scientific Research Institute, SinoPec Shengli Oilfield Company, 257015, Dongying, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/5(2010-05-01), 665-671 1674-7313 53:5<665 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer