Straight through cement mixer
AssigneeEstate of Thomas E. Allen
InventorThomas E. Allen
Life of this patent
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Abstract
A cement mixing method for mixing cement used in cementing oil wells casing and the mixer used in that method. The mixer employs a straight bulk cement inlet, five annular recirculation jets and five annular water jet orifices located downstream of the recirculation jets so that all of the jets discharge at an angle towards the mixing chamber and the discharge from the water jet orifices intersects with the flow from the recirculation jets. This five jet, intersecting flow design allows for more thorough wetting of the cement powder with a smaller, lighter, less expensive and more durable mixer that is less inclined to foul and easier to clean.
Claims2
A powder mixing method for mixing powder for use in high volume mixing applications comprising:
- introducing recirculated wetted powder mixture annularly into a mixing chamber of a powder mixer via recirculation jets provided annularly so that they discharge into said mixer so that the flow of recirculated wetted powder mixture from the recirculation jets enters the mixing chamber at an angle,
- introducing a regulated amount of mix water into said mixing chamber annularly downstream of said recirculation jets via adjustable water jet provided annularly so that they discharge into said mixer so that the flow of mix water from the water jets enters the mixing chamber at an angle and intersects with the flow of recirculated wetted powder mixture from the recirculation jets, and
- introducing dry bulk powder centrally into said mixing chamber from upstream of said recirculation outlets via a straight bulk powder inlet provided in said mixing chamber so that the mix water and recirculated wetted powder mixture intersect with and thoroughly wet and mix with the dry bulk powder.
Dependencies are inferred from the claim text.