Method and apparatus for performing operations in well tubing

Details Method and apparatus for performing operations in well tubing Method and apparatus for performing operations in well tubing

1981-09-08

1983-12-06

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166 70, 166153, E21B 2308

Patent

active

044187564

ABSTRACT:
A pumpdown system in which the pistons providing for movement of the train into and out of the well do not travel down into the tubing below the wellhead and are connected to tools through reach rods extending down into the tubing. The cathead effect resulting from working around the loop with pistons is minimized by guides which substantially center the pistons in the loop and in the preferred form by the use of straight sections of the loop.

REFERENCES:
patent: 3587740 (1971-06-01), Gerwick et al.
patent: 4027730 (1977-06-01), Sparlin
patent: 4039027 (1977-08-01), Churchman et al.
patent: 4062403 (1977-12-01), Sparlin
patent: 4078810 (1978-03-01), Arendt
patent: 4227573 (1980-10-01), Pearce et al.

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