Apparatus for testing a shear thickening plugging fluid

G - Physics – 01 – N

Patent

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Details

G01N 11/00 (2006.01) E21B 21/08 (2006.01) E21B 33/13 (2006.01) E21B 49/08 (2006.01) G01N 11/08 (2006.01) G01N 19/00 (2006.01) G01N 33/24 (2006.01) G01N 33/26 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2173350

An apparatus for testing a shear thickening plugging fluid, comprising a cylinder (1) having an inlet (2) with an inlet valve (3) for plugging fluid and an outlet (4) with an outlet valve (5) for plugging fluid, a moveable piston (6) sealing against the cylinder walls, so that the piston by being moved in the cylinder can suck plugging fluid into the cylinder through the inlet (2), and in a retrograde movement can press the plugging fluid out through the outlet (4), a shear valve (7) connected with the outlet (4), which shear valve (7) is adjustable for adjusting a desired shear stress, a means (8, 9) for measuring the pressure drop over the shear valve, a means (10) for collecting plugging fluid that has been pressed through the shear valve, and one or more means for measuring properties of the shear thickening plugging fluid.

Appareil de contrôle d'un fluide colmatant à épaississement sous cisaillement. Il comporte un cylindre (1) muni d'un orifice d'entrée (2) possédant une vanne d'entrée (3) pour le fluide colmatant, et d'un orifice de sortie (4) possédant une vanne de sortie (5) pour le fluide colmatant, un piston mobile (6) entrant en contact de manière étanche avec les parois du cylindre, et se déplaçant dans ce dernier de manière à y aspirer le fluide colmatant à travers l'orifice d'entrée (2), et, lors d'un déplacement en sens rétrograde, à expulser le fluide colmatant à travers l'orifice de sortie (4), une vanne de cisaillement (7) reliée à l'orifice de sortie (4) et adaptée pour permettre le réglage d'une contrainte de cisaillement voulue, un dispositif (8, 9) de mesure de la chute de pression entre les deux côtés de la vanne de cisaillement, un dispositif (10) de réception du fluide colmatant expulsé au travers de la vanne de cisaillement, et un ou plusieurs dispositifs de mesure des propriétés du fluide colmatant à épaississement sous cisaillement.

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