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

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

1987-01-12

1988-04-12

Leppink, James A.

Wells

Processes

Placing or shifting well part

166380, 166 775, 166 85, E21B 1916

Patent

active

RE0326429

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 support 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 provide 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.

REFERENCES:
patent: 1384688 (1921-07-01), Corrigan
patent: 1516229 (1924-11-01), Cameron
patent: 1898649 (1933-02-01), Wheeler et al.
patent: 3094852 (1963-06-01), Taylor
patent: 3293959 (1966-12-01), Kennard
patent: 3908256 (1975-09-01), Smith
patent: 4348920 (1982-09-01), Boyadjieff

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