| CPC E21B 34/063 (2013.01) [E21B 2200/08 (2020.05)] | 18 Claims |
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1. An apparatus comprising:
a funnel comprising:
a first end;
a second end;
a wall spanning from the first end to the second end, the wall defining a longitudinal axis through the first end and the second end, the wall having a first cross-sectional area at the first end and a second cross-sectional area at the second end, the first cross-sectional area and the second cross-sectional area perpendicular to the longitudinal axis, the first cross-sectional area greater than the second cross-sectional area;
a plurality of inlet ports, wherein a first inlet port of the plurality of inlet ports is disposed on the first end of the funnel, and a second inlet port of the plurality of inlet ports is disposed on the wall of the funnel; and
an outlet port disposed on the second end of the funnel;
a core disposed within the funnel, the core defining a first outer diameter, wherein the outlet port has an inner diameter that is less than the first outer diameter of the core;
a first coating disposed on and surrounding an outer surface of the core, the first coating defining a second outer diameter, the first coating configured to dissolve at a first dissolution rate in response to being exposed to water;
a second coating disposed on and surrounding an outer surface of the first coating, the second coating defining a third outer diameter, the second coating configured to dissolve at a second dissolution rate different from the first dissolution rate in response to being exposed to water; and
a third coating disposed on and surrounding an outer surface of the second coating, the third coating defining a fourth outer diameter, the third coating configured to dissolve in response to being exposed to a hydrocarbon.
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