Abstract
A new device is designed to promote the mixing of high-pressure water jets and powders in typical industrial applications. The water and powder mixing devices traditionally used on offshore platforms are detrimentally affected by the geometrical configuration of the water nozzle and the powder spraying pipe, which are parallel, resulting in small intersecting volumes of liquid and powder. By allowing the related jets to intersect, in the present work the optimal horizontal distance, vertical distance and intersection angle are determined through a parametric investigation. It is also shown that such values change if the number of water layers is increased from one to two. In such a case, the water and powder intersection volume can be greatly increased because the trajectory of the dry powder particles becomes more chaotic.
Highlights
Polymer flooding technology has been gradually popularized in tertiary recovery industrialization in onshore oilfields, and has achieved good economic and social benefits [1,2,3,4,5,6,7,8]
The water and powder mixing device on the offshore platform, the hydration head and the powder injection pipe are in a parallel state and the water and the powder particles intersect with a small volume, which causes the water and the polymer dry powder particles to not be fully mixed
“Fish-eye” agglomerates are prone to appear in the stirring tank, which will increase the dissolve difficulty of the polymer
Summary
Polymer flooding technology has been gradually popularized in tertiary recovery industrialization in onshore oilfields, and has achieved good economic and social benefits [1,2,3,4,5,6,7,8]. Since firstly application of polymer flooding in the Bohai Oilfield, offshore polymer flooding has achieved significant results [9,10,11,12]. Polymer dissolution process is obviously different from a low-molecular substance, because exists swelling and dissolves process. Solvent molecules enter the gaps of the polymer compound and molecular chain curled out, causing the polymer chain could not quickly unfold. The full contact of polymer dry powder particles with solvent molecules can shorten the dissolution time
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