Wells – Processes – Cementing – plugging or consolidating
Patent
1996-11-05
1998-06-09
Schoeppel, Roger J.
Wells
Processes
Cementing, plugging or consolidating
166155, 166156, E21B 3313
Patent
active
057621390
ABSTRACT:
The present invention provides an improved subsurface release cementing plug apparatus for use in a string of pipe during the cementing of the pipe in a well bore. The apparatus includes a hollow cementing plug seat member adapted to be connected in the string of pipe near the bottom thereof and a cementing plug assembly releasably connectable to a circulation tool or casing running tool in the top of the string of pipe. The cementing plug assembly includes a top cementing plug having an external annular seating surface formed thereon for sealingly engaging a top internal annular seating surface of the cementing plug seat member, and a bottom cementing plug releasably connected to the top cementing plug having an external annular seating surface formed thereon for engaging a bottom internal annular seating surface of the cementing plug seat member.
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Laurel David F.
Morgan George L.
Sullaway Bobby L.
Szarka David D.
Dougherty, Jr. C. Clark
Halliburton Company
Roddy Craig W.
Schoeppel Roger J.
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