Experience of liquefied gases storage ethylene propylene in

Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt Maria Khloptsova “Gazprom geotechnology” 1

Properties of liquefied hydrocarbon gases Properties Ethylene Propylene Molar mass, g/mol 42, 08 28, 05 Melting point, °C -185, 2 -169, 2 Boiling point, °C -47, 6 -103, 7 Critical temperature, °C 91, 9 9, 90 Critical pressure, MPa 4, 56 5, 09 Critical density, kg/m 3 233 211 Up to 500 370 -410 Density in operating conditions, kg/m 3 2 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

Salt caverns for storage of liquefied hydrocarbon gases (propylene) according to the results of sonar Depth of the salt cavern 640 -590 m; geometric volume - 70 thous. m 3; the capacity of the salt layer - 200 m 3 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

Salt caverns for storage of liquefied hydrocarbon gases (ethylene) according to the results of sonar Depth of the salt cavern is 600 -700 m; the geometric volume - 45 thous. m 3; the capacity of the salt layer - 200 m 4 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

Salt caverns for storage of liquefied hydrocarbon gases (ethylene) according to the results of sonar Depth of the salt cavern 1312 -1320 m; geometric volume of 21. 6 thous. m 3; the capacity of the salt layer - 50 m 5 Operation features of underground reservoirs for propylene and

Sustainability of salt caverns for storage of liquefied hydrocarbon gases 6 Operation features of underground reservoirs for propylene and

Technological scheme for operation for liquefied gas storage in salt caverns (for example, storage of ethylene) 7 Operation features of underground reservoirs for propylene and

Ground brine storage used to displace liquefied hydrocarbon gas 8 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

Underground brine storage used to displace liquefied hydrocarbon gas Brine displacement with nitrogen 9 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

Well design for underground storage of liquefied hydrocarbon gas № Casing ПР 2 ПР 3 ПР 1 ПР 2 ПР 3 426 640 820 23, 1 24 24 - 377 530 - 496 439, 6 324 299 245 481, 4 554 1258, 9 Outer casing (protective) 168 219 168 634, 5 586, 5 1320, 58 146 114 636, 8 586 1321, 04 Direction 2 Intermediate casing string 4 5 Depth, mm ПР 1 1 3 Diameter, mm Last cemented casing Central casing 114 (with brine) 10 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

Casing bottom design Protective casing Control holes Demping device Technological windows 11 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

Main operating parameters liquefied hydrocarbon gases storages in salt caverns № Parameter Value ПР 1 ПР 2 ПР 3 1 Propilene/ethilene pressure on collar, MPa 5, 95 7, 6 11, 5 2 Brine pressure on collar, MPa 3, 59 3, 5 - 3 Temperature in underground reservoir, °С 4 5 12 Ethilene (propylene) withdrawal/brine injection capacity, m 3/h Geometric scope, th. m 3 13 13 15 72 82, 3 12 t/h 66 44 24 Experience of liquefied gases storage (ethylene, propylene) in underground reservoirs in rock salt

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