Sampling of drilling mud

Details Sampling of drilling mud Sampling of drilling mud

1990-11-20

1993-01-26

Williams, Hezron E.

Measuring and testing

Borehole or drilling

Downhole test

7386301, G01N 3500, E21B 4900

Patent

active

051814196

ABSTRACT:
A sample flow of drilling mud is taken via a pipe 14 from a shale shaker tank 10 and passed into a container 15 with a vigorous stirrer 17 and having a capacity of typically 0.40 m.sup.3. The sample flow rate and size of the container are sufficient to permit analysis of samples taken at 15 minute intervals via a pipe 18 and valve 19, without aliasing information in the resulting data. For eight hour sampling an intermittent flow is taken from the container 15 into another agitated container 21 via a pipe 26 with a valve 27 which is open only for two seconds in every minute. Analysis samples are taken via a pipe 22 and a valve 23 and the residence time in the tanks 15 and 21 is sufficient to prevent aliasing in the information acquired by eight hour sampling and analysis.

REFERENCES:
patent: 2342273 (1944-02-01), Hayward
patent: 3004544 (1961-10-01), Guptill, Jr.
patent: 3422674 (1969-01-01), Schroeter
patent: 3435663 (1969-04-01), de Lamballerie
patent: 3911741 (1975-10-01), Rochon et al.
patent: 4321465 (1982-03-01), Stover et al.
patent: 4369655 (1983-01-01), Scearce
patent: 4677851 (1987-07-01), McAuley
patent: 4807469 (1989-02-01), Hall
patent: 4860836 (1989-08-01), Gunther
patent: 4904603 (1990-02-01), Jones et al.

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