Method and means for introducing treatment composition into a we

Details Method and means for introducing treatment composition into a we Method and means for introducing treatment composition into a we

1988-02-01

1988-12-13

Novosad, Stephen J.

Wells

Processes

Entraining or incorporating treating material in flowing...

166117, 166162, 166902, 2065247, E21B 4102

Patent

active

047903864

ABSTRACT:
Treatment composition is released into a well by lowering a container filled with the composition to the bottom of the well. The corrosive well fluid dissolves the composition through the open upper end of the container and corrodes away the walls of the container from the inside out. The outer surface of the container walls is coated with a material, such as tetrafluoroethylene, which acts as a barrier to the well fluid to prevent it from directly contacting the outer wall surface. In this manner treatment composition is gradually released from the top end of the ever-diminishing length of container and the container is degraded in the well.

REFERENCES:
patent: 2635996 (1953-04-01), Rohrback et al.
patent: 2728400 (1955-12-01), Rohrback
patent: 2744880 (1956-05-01), Brown
patent: 2775302 (1956-12-01), Kirkpatrick
patent: 3190373 (1965-06-01), Weathersby
patent: 4611664 (1986-09-01), Osterhoudt, III et al.
patent: 4670166 (1987-06-01), McDougall et al.

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