Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent
1988-02-18
1988-10-04
Dang, Hoang C.
Wells
With below and above ground modification
Head for tool, piston or cleaner
166 76, 166 85, 166153, 285165, 285302, 285354, 285388, 285415, E21B 3305, F16L 1902
Patent
active
047750081
ABSTRACT:
An adjustable cement head manifold connector including a first union having a passageway therethrough operably connected for a fluidtight connection with a cement head, a second union having a passageway therethrough having an end for operably connecting it in a fluidtight manner to a cement head, components for slidably connecting the first union and the second union in a fluidtight manner. The components for slidably connecting including a mandrel having one end fixed to one of the unions and slidably engaged with the other. The fixed end of the mandrel is preferably held with a combination of a sleeve surrounding the mandrel acting in conjunction with a nut which operatively engages and presses the mandrel against the seat at the opening of the union. The end of the mandrel which is slidably engaged utilizes a sleeve nut and O-ring arrnagement for fluidtight engagement against the mandrel. Alternately, a turn-buckle sleeve may be utilized with left and right hand threads connecting to the unions to provide additional reinforcement. One end of the union has a foreshortened end which is made possible by the use of a segmented retainer sleeve held in place by a snap ring and motivated by a flange nut which engages the retainer ring.
REFERENCES:
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patent: 4246967 (1981-01-01), Harris
"Cement Fundamentals" by Dowell.
"Lesson 8: Introduction to Cementing", Aug. 1981.
Dang Hoang C.
Deioma D. B.
Dowell Schlumberger Incorporated
Littlefield S. A.
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