Expandable sand screen having temporarily sealed slots

Method of casing a well using an expandable sand screen. The sand screen is a longitudinally corrugated pipe 1 with slots 5 which are temporarily sealed 7. After running the sand screen into a formation it is expanded by pressure. A heat carrier is then supplied to the sand screen to unseal the slot...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FARIT FOATOVICH AKHMADISHIN, MARAT AZATOVICH ISMAGILOV, ANATOLY VALENTINOVICH DMITRIEV, RUSTAM KHISAMOVICH ILALOV, GABDRASHIT SULTANOVICH ABDRAKHMANOV, MARAT GAFUROVICH SABIROV, VITALY PETROVICH FILIPPOV, RAVIL RUSTAMOVICH IBATULLIN, MARAT MARSOVICH ZALYATOV, NIGAMATYAN KHAMITOVICH KHAMITIYANOV
Format:	Patent
Sprache:	eng
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:	Method of casing a well using an expandable sand screen. The sand screen is a longitudinally corrugated pipe 1 with slots 5 which are temporarily sealed 7. After running the sand screen into a formation it is expanded by pressure. A heat carrier is then supplied to the sand screen to unseal the slots 5. The slots are sealed by a thermoplastic 7 which is melted by the heat carrier. Adjacent pipes are connected by cylindrical end portions 4. There may be an anchor and a sealing shoe with a valve to create excess pressure after the sand screen is run into the well. The slots 5 may be positioned on bulges 6 of the longitudinally ribbed pipes 1. Adjacent pipes can be connected through a thermal compensator (12 / 13, FIG 3). There may be a collar (14, FIG 4) in the connection between adjacent pipes 1.