Method of injecting fluids into underground formations

Details Method of injecting fluids into underground formations Method of injecting fluids into underground formations

1976-06-24

1977-09-27

Leppink, James A.

Wells

Processes

Placing fluid into the formation

E21B 4325

Patent

active

040505162

ABSTRACT:
A method of injecting fluids into underground formations such as oil wells, and particularly advantageous for treating low-pressure formations having bottomhole pressures below normal tubing hydrostatic pressure, utilizes the steps of lowering into the borehole a tubing string, locating near the formation to be treated a partially pressure-balanced valve adapted to support a column of fluid in the string of tubing, and applying pressure to the column of fluid in the tubing to inject fluid through the valve and into the formation.

REFERENCES:
patent: 2033563 (1936-03-01), Wells
patent: 2757741 (1956-08-01), O'Reilly
patent: 3032111 (1962-05-01), Corley et al.
patent: 3319717 (1967-05-01), Chenoweth
patent: 3796261 (1974-03-01), Nutter

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