Controlling sulfide scavenger content of drilling fluid

Details Controlling sulfide scavenger content of drilling fluid Controlling sulfide scavenger content of drilling fluid

1985-10-04

1987-04-21

Turk, Arnold

Boring or penetrating the earth

With signaling, indicating, testing or measuring

175 64, 436 25, 436 81, 436120, 436178, G01N 3102, G01N 3324

Patent

active

046589147

ABSTRACT:
The concentration of unspent zinc-based hydrogen sulfide scavenger in an aqueous drilling fluid is controlled by selectively extracting an unspent scavenger in a solvent, such as glacial acetic acid, measuring the concentration of dissolved zinc, for example, with an X-ray fluorescence spectrograph, and utilizing the results of the measurements to proportion the extent of changes to be made in the concentration of the scavenger.

REFERENCES:
patent: 3706532 (1972-12-01), Noll
patent: 3928211 (1975-12-01), Browning et al.
patent: 4252655 (1981-02-01), Carney
Khristoforov et al., Chemical Abstracts, vol. 72, 1970, No. 96393r.
Sandell, "Colorimetric Determination of Traces of Metals", Interscience Publishers, Inc., New York, 1944, pp. 449-450.
The Condensed Chemical Dictionary, Tenth Edition, Van Nostrand Reinhold Co., New York, 1981, pp. 1106-1113.
Garrett et al., Journal of Petroleum Technology, Jun. 1979, pp. 787-796.

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