SUBSEA SYSTEM AND METHOD FOR PRESSURIZATION OF A SUBSEA OIL RESERVE BY INJECTING AT LEAST ONE OF WATER AND GAS

The present invention relates to the injection of water and gas, either simultaneously or alternately, into subsea wells in order to enhance production and the oil recovery level. Thus, the present invention provides a subsea system for pressurizing a subsea oil reservoir injecting at least one of w...

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Bibliographische Detailangaben
Hauptverfasser:	NOVILLE ROCHA CORREA LIMA, Ivan, RODRIGUES, Roberto, GODOY MOTA VALENÇA, Cláudio José, STARK DE ALMEIDA E SILVA, André, FERREIRA DA SILVA, Helvio, GAVA COLOMBO, Elias, GUERREIRO DA SILVA, Sidnei, FLECK HECK BRITTO, João Francisco
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The present invention relates to the injection of water and gas, either simultaneously or alternately, into subsea wells in order to enhance production and the oil recovery level. Thus, the present invention provides a subsea system for pressurizing a subsea oil reservoir injecting at least one of water and gas, comprising (i) at least two subsea injection wells (4, 4'), each subsea injection well (4, 4') being connected to a production unit (5) by means of a single subsea line (1, 2) which is connected to the respective subsea injection well (4, 4') by a main injection mandrel (6, 6'), and (ii) at least one jumper (3), each jumper (3) hydraulically connecting two of the at least two adjacent subsea injection wells (4, 4') through annular mandrels (7, 7'). The present invention further provides a subsea reservoir pressurization method associated with the above-described system.