| 摘要 |
<p>"" An apparatus and method for directing steam into selected strata of a relatively thick subterranean formation penetrated by a well. The apparatus includes an elongated housing attachable to the lower end of the well tubing, the housing having a closed lower end and a plurality of jets spaced around the sidewall thereof so as to be positioned opposite the strata to be treated. The jets direct the steam outwardly and downwardly against the formation face, causing it to preferentially enter the selected strata.</p> |
