Method and apparatus for measuring the bubble point of oil...

Details Method and apparatus for measuring the bubble point of oil... Method and apparatus for measuring the bubble point of oil...

G - Physics

01

N

73/124, 354/21

G01N 7/00 (2006.01) E21B 49/08 (2006.01) G01N 33/28 (2006.01)

Patent

CA 1288614

ABSTRACT OF THE DISCLOSURE The invention relates to measuring the bubble point of oil down a well drilled into an underground formation. The pressure is measured by means of apparatus lowered down the well. The apparatus comprises a chamber (2) in which a small quantity of oil is confined in a volume which is variable by means of a needle (3) having portions of different diameters (3a, 3b) capable of being inserted to a greater or lesser extent into the chamber (2) under drive from a motor (7). Values of pressure inside the chamber and of chamber volume are respectively measured by a manometer (11) and by a displacement sensor (12) connected to the needle (3) and are transmitted to the surface.

518821

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