| 摘要 |
This invention relates to method and apparatus for isolating and treating one of a plurality of selected zones located downhole in a borehole by freezing spaced-apart portions of the formation so that the zone to be treated is located therebetween. Treatment fluid is pumped down the apparatus of the present invention and out into the zone to be treated, with the spaced-apart, frozen portions of the formation effectively isolating the remainder of the wellbore from the treatment zone.
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