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METHODS AND SYSTEMS TO TRANSFER PROPPANT FOR FRACKING WITH REDUCED RISK OF PRODUCTION AND RELEASE OF SILICA DUST AT A WELL SITE

  • US 20150360856A1
  • Filed: 04/01/2015
  • Published: 12/17/2015
  • Est. Priority Date: 09/27/2012
  • Status: Active Grant
First Claim
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1. A method of transferring proppant for fracking to reduce risk of production and release of silica dust at a well site, the method comprising:

  • positioning a plurality of containers each having proppant for fracking contained therein onto a conveyor at a well site, the conveyor having a plurality of conveyor hoppers and each of the plurality of conveyor hoppers overlaying a conveyor belt, each respective container having a sealed top to reduce the risk of release of silica dust associated with proppant into the air;

    downwardly discharging proppant from each respective container of the plurality of containers, each respective container further having inclined lower inner portions and one or more outlets positioned at a bottom of each respective container, such that as proppant flows by gravity feed along the inclined lower inner portions to and through the one or more outlets, risk of production and release of silica dust into the air is thereby reduced, and the respective container is substantially emptied of proppant;

    funneling proppant from the one or more outlets of each of the plurality of containers through the plurality of conveyor hoppers, each respective conveyor hopper having a plurality of inclined side portions and one or more controllable openings positioned adjacent and overlying the conveyor belt, such that as proppant flows by gravity feed along the plurality of inclined side portions of each of the plurality of conveyor hoppers through the one or more controllable openings to the conveyor belt, risk of production and release of silica dust into the air through the one or more controllable openings is thereby reduced;

    receiving proppant onto the conveyor belt, the conveyor belt having a plurality of partitions associated therewith, such that the plurality of partitions are positioned to reduce the risk of production and release of silica dust into the air as the proppant contacts and is carried by the conveyor belt;

    conveying proppant on the conveyor to a chute, the conveyor belt having a first end portion and a second end portion, the second end portion of the conveyor belt including a shrouded portion that has a shroud substantially enclosing the conveyor belt and positioned to substantially reduce the risk of release of silica dust associated with proppant into the air as the proppant is conveyed through the shrouded portion; and

    depositing the proppant from the second end portion of the conveyor into the chute.

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