E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 23/00 (2006.01)
Patent
CA 2709165
A series of down hole tools are assembled from a common subassembly to which are added various specialty parts to make a flow back plug, a bridge plug or a plug with a disintegratable check valve. The subassembly may be used, as is, as a ball drop plug. The components may be added through either end of the subassembly without having to take the subassembly apart. The subassembly and specialty parts may be shipped to the customer so the end user may customize the subassembly to provide a plug operable to provide a variety of functions.
Frazier W. Lynn
Macrae & Co.
LandOfFree
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