Why the last mile is the bottleneck
The rail network and the in-basin mines solved the proppant supply problem years ago. Unit trains pull into transload facilities, and local mines load trucks within sight of the play. What still fails is the last mile: the coordinated flow of trucks between the mine, the transload, and the wellsite, timed to a frac crew that costs real money every hour it waits.
A single modern horizontal well can take several million pounds of proppant, and a multi-well pad can take tens of millions. At 25 tons a load, that is hundreds of truck movements per well. The math makes scheduling the critical function, not the trucks themselves.
Silos beat piles for a reason
Sand stored in open piles picks up moisture, dust, and debris. Wet sand does not flow through the blender, and contaminated sand can damage downhole equipment. Storage silos at the wellsite keep the sand dry, make inventory countable, and let trucks unload without waiting on a dozer to push a pile.
The choice between just-in-time delivery and wellsite storage is a risk trade. JIT keeps cash free and the pad clean, but it makes the operation hostage to one truck breakdown on a two-lane road. Storage on the pad costs space and handling, but it buys a buffer. Mature completions teams run a deliberate mix and measure both sides.
The schedule is the product
Every frac crew has a target sand rate, measured in pounds per minute at the blender. The logistics job is to keep the silos or the pile feeding that rate without a truck queue so long that drivers time out under hours of service, and without gaps so long that the crew waits.
That requires dispatch to know, load by load: the truck, the driver's remaining hours, the load weight, the source, the destination pad, and the arrival window. The same data that keeps the schedule running is the data that makes the tickets correct at the end of the day.
Tickets are the control point
Sand tickets carry weight, source, destination, and often a ticket number that the mine, the trucker, and the operator all record differently. Mismatches surface weeks later as invoice disputes, chargebacks, and payment delays. The cheapest fix is field capture: the driver confirms the load at pickup and the delivery on the pad, with the weight and the time in one record.
Operators who reconcile the mine's numbers against the wellsite's numbers every day find discrepancies while they are still small. Operators who reconcile at invoice time find them after the money is already tied up. The gap between job complete and invoice ready is where this either gets controlled or bleeds, and field ticket accuracy is the lever.
If sand loads are still being tracked on paper across the mine, the road, and the pad, an operations audit will show exactly where the last mile leaks.