Patent 9260257 was granted and assigned to Halliburton on February, 2016 by the United States Patent and Trademark Office.
A storage unit is disclosed. A first feed is disposed at least partially within the storage unit, and a second feed is coupled to the first feed. The second feed is configured to receive one or more materials and to transfer the one or more materials to the first feed. The first feed is configured to elevate the one or more materials to the storage unit.