Fremgangsmåte og system for å danne en multilateral brönn, samt undergrunns multilateral brönnkonstruksjon

A subterranean multilateral well structure comprises a main well flow conductor (120) within a main wellbore (110); several lateral wellbores (150) in material (112) surrounding the main wellbore; a preformed window member (322) having a preformed window (324) of a prescribed shape formed within the...

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Bibliographische Detailangaben
Hauptverfasser:	FREEMAN, TOMMIE AUSTIN, LONGBOTTOM, JAMES R, JACQUIER, RICHARD CHARLES, NIVENS, HAROLD WAYNE, GANO, JOHN C, WELCH, WILLIAM RICHARD, COX, DON C, WHITE, PAT MURPHY, MILLS, DAVID H, HOLBROOK, PAUL DAVID
Format:	Patent
Sprache:	nor
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A subterranean multilateral well structure comprises a main well flow conductor (120) within a main wellbore (110); several lateral wellbores (150) in material (112) surrounding the main wellbore; a preformed window member (322) having a preformed window (324) of a prescribed shape formed within the main well flow conductor; and a nipple (122) for locating a diverter (332) at a prescribed position in the flow conductor. The subterranean multilateral well structure also includes liners having interface ends cemented within each of the lateral wellbores; and pressure-bearing seals between the peripheries of the windows and interface ends of the liners. The sidewall of the main well flow conductor includes several windows having lateral orientations and a particular shape distributed along a length of the conductor. The seals provide connectivity among main and lateral wellbores; and pressure-bearing sealing of joints to allow selective isolation of and access to lateral wellbores.