Global patent index - EP 0980462 A1

EP 0980462 A1 2000-02-23 - EXPANDABLE WELL SCREEN

Title (en)

EXPANDABLE WELL SCREEN

Title (de)

EXPANDIERBARER BOHRLOCHFILTER

Title (fr)

FILTRE EXPANSIF DESTINE A UN PUITS

Publication

EP 0980462 A1 (EN)

Application

EP 98924261 A

Priority

  • EP 98924261 A
  • EP 9802577 W
  • EP 97201267 A

Abstract (en)

[origin: WO9849423A1] An expandable well screen for preventing migration of sand or other solid particles into a hydrocarbon fluid production well comprises a number of filter sheets (3) with circumferential slots (6), which sheets (3) are secured in an iris-shaped configuration and co-axial to an expandable slotted carrier tube (1) such that as result of expansion of the tube (1) the amount of overlap between adjacent filter sheets (3) is reduced. The circumferential slot pattern of the slots (6) enables the filter sheets (3) to slide easily relative to each other and to avoid buckling and/or tearing of the filler sheets during the expansion process.

IPC 1-7 (main, further and additional classification)

E21B 43/10; E21B 43/08

IPC 8 full level (invention and additional information)

E21B 43/08 (2006.01); E21B 43/10 (2006.01)

CPC (invention and additional information)

E21B 43/108 (2013.01); E21B 43/086 (2013.01); E21B 43/103 (2013.01)

Citation (search report)

See references of WO 9849423A1

Designated contracting state (EPC)

DE DK GB IT NL

EPO simple patent family

WO 9849423 A1 19981105; AU 717503 B2 20000330; AU 7651798 A 19981124; BR 9809005 A 20000808; CA 2284865 A1 19981105; CA 2284865 C 20051025; DE 69810610 D1 20030213; DE 69810610 T2 20030703; DK 0980462 T3 20030407; EP 0980462 A1 20000223; EP 0980462 B1 20030108; ID 22839 A 19991209; MY 119637 A 20050630; NO 317766 B1 20041213; NO 995248 A 19991027; NO 995248 D0 19991027; NZ 337859 A 20000327; OA 11211 A 20030718; RU 2197600 C2 20030127

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