Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1991-01-23
1992-12-08
Williams, Hezron E.
Measuring and testing
Sampler, sample handling, etc.
Capture device
175 21, 175 22, E21B 4908
Patent
active
051687658
ABSTRACT:
An upstanding tubular housing is provided mounted in sealed connection to the lower end of a tubing string as a downward extension thereof and encloses a screen sample tube therein for movement between an upper limit position with the lower end of the tube closing a center bore formed through a cone point on the lower end of the housing and a lower limit position with a major portion of the length of the screen tube downwardly projected through said center bore. A drop rod is downwardly insertable through the tubing string and engageable with the upper end of the screen tube for downwardly displacing the latter from its upper limit position to its lower limit position and the drop rod is tubular and defines an upward extension of the interior of the screen tube. Lower and upper end portions of the screen tube are sealed relative to the center bore when the screen tube is in its upper and lower limit positions, respectively, and the upper end of the interior of the screen tube includes a one-way check valve therein allowing and preventing upward and downward fluid flow, respectively, therepast.
REFERENCES:
patent: 58721 (1866-10-01), Duck et al.
patent: 576953 (1897-02-01), Davis
patent: 1202966 (1916-10-01), Carroll
patent: 1514585 (1924-11-01), Edwards
patent: 2070836 (1937-02-01), Macready
patent: 2141261 (1938-12-01), Clark
patent: 2161233 (1939-06-01), O'Neill
patent: 4310057 (1982-01-01), Brame
patent: 4669554 (1987-06-01), Cordry
patent: 4804050 (1989-02-01), Kerfoot
patent: 4807707 (1989-02-01), Handley et al.
Brock Michael J.
Williams Hezron E.
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