Prepacked well screen and casing assembly

摘要: Prepacked well screen and casing assembly for use in wells provides very substantial savings the expense time required to complete a as compared conventional techniques of down-hole perforating gravel packing. The includes an external or liner member which would be provided with large number perforations during manufacture. A pipe base jacket is positioned concentrically within attached it by readily machinable upper lower annular ring members. hollow cylindrical annulus between filled resin-coated pack material cured after fill operation maintain its integrity. can hung uncased producing zone new hanger could placed existing cased reworked first milling away production zone. If reworking should ever required, washover tool used remove members so that replaced repacked techniques.