Method and apparatus for operating multiple tools in a well

Details Method and apparatus for operating multiple tools in a well Method and apparatus for operating multiple tools in a well

1984-10-15

1987-08-04

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

175325, E21B 2308, E21B 4300

Patent

active

046839569

ABSTRACT:
Apparatus and method for operating multiple tools connected serially in a pipe string in a well, each tool being operated by cyclic pressuring and depressuring of fluid in the pipe string from the surface, each tool having a part movable downward and upward by movements of a piston in response to said pressure cycles, said part movements being controlled by barrel cams which direct the part through a series of positions in response to a series of pressure cycles, the barrel cams of the tools being the same or different depending on the part position combinations desired, a series of pressure cycles moving the tool parts through the desired part position combinations for the multiple tools. Tool modifications making the multiple tool operations possible are also disclosed.

REFERENCES:
patent: 3123162 (1964-03-01), Rowley
patent: 3400773 (1968-09-01), Tiraspolsky et al.
patent: 3799277 (1974-03-01), Kellner
patent: 3986554 (1976-10-01), Nutter
patent: 4407377 (1983-10-01), Russell
patent: 4491187 (1985-01-01), Russell

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