Pipe base well screen and system for joining a plurality of...

Details Pipe base well screen and system for joining a plurality of... Pipe base well screen and system for joining a plurality of...

E - Fixed Constructions

21

B

166/70

E21B 19/16 (2006.01) E21B 19/10 (2006.01) E21B 43/08 (2006.01)

Patent

CA 1201062

"PIPE BASE WELL SCREEN AND SYSTEM FOR JOINING A PLURALITY OF WELL SCREEN SEGMENTS" ABSTRACT Plural pipe-based well screen segments can be assembled more quickly and easily and with no chance of damage to the screen jacket by welding a boss ring to the center pipe of each segment intermediate the upper pipe end and the screen jacket and then using a slip to sup- port the boss ring. The slip is designed to be supported by holes normally present in the master bushing of a rotary drilling table or platform and is of sufficient height that the screen sections can be joined without the operator having to bend over. A pair of relatively light weight, hinged cantilevered plates can be easily lifted to pro- vide clearance for the screen jacket to be lowered through the table and are then moved to their horizontal position just before the boss ring portion of the screen is lowered so as to engage them. A vertical bar on the slip acts as a wrench stop to permit the upper end of the pipe to be held stationary as the succeeding segment of screen is threaded to it.

431803

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