Technique for locating injected gas in oil bearing formations be

Details Technique for locating injected gas in oil bearing formations be Technique for locating injected gas in oil bearing formations be

1984-12-27

1987-02-10

Howell, Janice A.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250266, 250269, G01V 510

Patent

active

046424601

ABSTRACT:
A method for monitoring the movement of injected gas in an oil bearing formation behind the well casing is disclosed. A compensation neutron log is obtained from the well. The count rates are normalized to delineate water zones, gas zones and shale zones. Near and far count rates are rescaled and used to provide a qualitative determination of the distance from the point of injection to the top of the displaced gas in the formation by an analysis of the separation of the near and far count rate curves.

REFERENCES:
Marvin R. Neal, "Gravel Pack Evaluation", Journal of Petroleum Technology (Sep. 1983), pp. 1611-1616.

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