Abstract: A mixing system may include a closed mixer having an inlet, a discharge, and an inlet/discharge. The mixing system may also include a recirculation line in fluid communication with the inlet and the inlet/discharge.

Abstract: A mixing system may include a closed mixer having an inlet, a discharge, and an inlet/discharge. The mixing system may also include a recirculation line in fluid communication with the inlet and the inlet/discharge.

Abstract: A portable well treating fluid mixing system includes: a supply tank having an inlet receiving pneumatically conveyed dry treating material; a cyclone separator having an inlet coupled to the supply tank and receiving dust laden air from the supply tank, and having a first outlet venting clean air and having a second outlet venting solids; a collection container having a first inlet coupled to the cyclone separator second outlet and receiving solids from the cyclone separator and having an outlet; and, a pump having an inlet coupled to the collection container outlet and a pump outlet coupled to the supply tank. In operation, the system continuously conveys dust from the collection container back into the supply tank to maintain the separator in proper operating condition and minimizes venting of dust during the transfer of material to the supply tank.

Abstract: Methods and systems for blending a dry material with a fluid in a closed environment are disclosed. A liquid component is supplied from a liquid delivery system to a mixing chamber. A dry component or a high solid content slurry is then supplied from a dry material tank or an external proppant storage to the mixing chamber. The dry component or high solid content slurry is then mixed with the liquid component in a closed system to prepare a desired mixture.

Abstract: A portable well treating fluid mixing system includes: a supply tank having an inlet receiving pneumatically conveyed dry treating material; a cyclone separator having an inlet coupled to the supply tank and receiving dust laden air from the supply tank, and having a first outlet venting clean air and having a second outlet venting solids; a collection container having a first inlet coupled to the cyclone separator second outlet and receiving solids from the cyclone separator and having an outlet; and, a pump having an inlet coupled to the collection container outlet and a pump outlet coupled to the supply tank. In operation, the system continuously conveys dust from the collection container back into the supply tank to maintain the separator in proper operating condition and minimizes venting of dust during the transfer of material to the supply tank.

Abstract: A portable well treating fluid mixing system includes: a supply tank having an inlet receiving pneumatically conveyed dry treating material; a cyclone separator having an inlet coupled to the supply tank and receiving dust laden air from the supply tank, and having a first outlet venting clean air and having a second outlet venting solids; a collection container having a first inlet coupled to the cyclone separator second outlet and receiving solids from the cyclone separator and having an outlet; and, a pump having an inlet coupled to the collection container outlet and a pump outlet coupled to the supply tank. In operation, the system continuously conveys dust from the collection container back into the supply tank to maintain the separator in proper operating condition and minimizes venting of dust during the transfer of material to the supply tank.

Abstract: The present invention is directed to an apparatus and method for accurately metering and conveying a dry powder or granular material to a blender in a substantially closed system. The apparatus includes a storage tank adapted to hold the dry powder or granular material, a hopper disposed inside of the storage tank; and a conveyor at least partially disposed inside of the storage tank, which delivers the dry powder or granular material to the hopper. The apparatus also includes a metering feeder adapted to deliver the dry powder or granular material at a substantially uniform density from the hopper to a blender located outside of the storage tank. The apparatus is a substantially closed system, thus minimizing the risk that the dry powder or granular material will become airborne.