Chemical injection and mixing device
AssigneeSaudi Arabian Oil Company
InventorsMohamed Ahmed Soliman, Samer Osamah Abduljabbar, Samusideen Adewale Salu
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Abstract
A flow of a chemical is mixed with a flow of a primary fluid to form a combined fluid, and during mixing a velocity of the combined fluid is maintained at a threshold value so that a resulting mixture of the chemical and primary fluid has a designated homogeneity. The primary fluid is directed to an end of a passage with a venturi like contour that is inside of a mixer, and the chemical is directed to a side passage that extends laterally in the mixer that intersects the passage. A spring loaded valve in the passage maintains the combined flow velocity at the threshold value.
Claims8
A mixer comprising:
- a body;
- a passage formed through the body;
- an annular plenum circumscribing the passage and having an inner radius that is parallel with a sidewall of the passage and a frusto-conical cross section, the plenum in communication with a source of an injection chemical;
- a port in the sidewall of the passage that is in communication with the plenum;
- the passage having an end with an opening that is in communication with a primary fluid, the primary fluid being selectively combined with the injection chemical to create a combined fluid when a velocity of the primary fluid is at a threshold magnitude so that the combined fluid is mixed inside the mixer and becomes a mixed fluid having a designated homogeneity;
- and
- a valve assembly in the passage that is moveable to a blocking configuration when the velocity is below the threshold magnitude and defines a barrier to flow of the primary fluid and injection chemical into the passage, and when the velocity is at least at the threshold magnitude the valve assembly being moveable to a flowing configuration and that permits a flow of the primary fluid and injection chemical into the passage.
Dependencies are inferred from the claim text.