| 摘要 |
A well screen ( 10 ) is proposed having an outer standoff layer ( 14 ) between the protective screen ( 15 ) and the filter medium ( 13 ). A method of making the well screen ( 10 ) is also proposed, comprising a step of pulling an open-ended cylinder of filter medium ( 13 ) over underlying layers ( 12 ) in the well screen ( 10 ). Furthermore, a method is proposed using series resistance welding for sealing seams in the layers making up the well screen ( 10 ).
|
