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AssigneeWeatherford/Lamb, Inc.
InventorsWilliam F. Howard, Jackie C. Sims, Dudley L. Robinson, Ronald W. Schmidt
Estimating the term…
The present invention generally provides a method and apparatus for injecting a compressible fluid at a controlled flow rate into a geological formation at multiple zones of interest. In one aspect, the invention provides a tubing string with a pocket and a nozzle at each isolated zone. The nozzle permits a predetermined, controlled flow rate to be maintained at higher annulus to tubing pressure ratios. In another aspect, the present invention assures that the fluid is supplied uniformly to a long horizontal wellbore by providing controlled injection at multiple locations that are distributed throughout the length of the wellbore. In another aspect, the invention ensures that saturated steam is injected into a formation in a predetermined proportion of water and vapor by providing a plurality of apertures between a tubing wall and a pocket.
An apparatus for injecting steam from a wellbore into a geological formation, the apparatus comprising:
An apparatus for injecting steam from a wellbore into a geological formation, the apparatus comprising:
An apparatus for injecting steam into a lateral wellbore comprising:
Dependencies are inferred from the claim text.