Method and means for introducing treatment fluid into a well bor

Details Method and means for introducing treatment fluid into a well bor Method and means for introducing treatment fluid into a well bor

1988-01-13

1989-07-11

Dang, Hoang C.

Wells

Processes

Entraining or incorporating treating material in flowing...

166117, 166162, 166371, 166902, E21B 3706, E21B 4102

Patent

active

048462799

ABSTRACT:
Treatment fluid is injected into the production fluid of a well from a bladder contained in a canister at the bottom portion of the well bore. The flow rate is predetermined through use of a capillary tube connecting the bladder and an injection outlet. Differential pressure between the bladder and the outlet to actuate the flow of treatment fluid is created either by restricting the flow of production fluid adjacent the outlet or by compressing the bladder through the use of water-expansible material in contact with the bladder in the canister. An aperture in the bottom of the canister is provided to expose the bladder to the well fluid.

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