Hydraulic Fracturing Techbook 2018

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HYDRAULIC FRACTURING: LOGISTICS | August 2018 | 73 LOGISTICS HYDRAULIC FRACTURING: T he incumbent method of storing fixed amounts of sand at a well site includes the use of several storage bins, which are supplied by pneumatic trailers each holding 45,000 lb of sand. This sand sup- ply method worked well for decades when a "mega" frack was around 1 MMlb of sand total per well. As modern fracturing has become more sand intensive with horizontal wells averaging more than 12 MMlb and frack crews often pumping in excess of 4 MMlb of sand per day, the old method of replenishing the large, entrenched storage bins simply cannot efficiently sustain the frack beast. A mobile container technology provides the flexibility to address today's complex supply chain. Contrasting container efficiency is straight forward. PropX containers provide an elastic buffer of supply at multiple points along the supply chain. Choke points at the well site can be dealt with by short, predict- able 10-minute or less drop-off times. Trucks do not wait because they are not constrained by a maximum storage level being exceeded or by protracted unload times. They are in and out swiftly during the moment of greatest need. Distribution depots can be placed in strategic locations or at the rail terminal to reduce the risk of demurrage not only at the well site but also at the rail terminal or mine. Inventory can flex up and down as needed, and quick infusions of emergency supply at the well site are now a realistic possibility. In-basin depots can be tapped and stocked during the inevitable ebb-and-flow activity swings that happen during large, complex shale completions. Keeping the frack operation consistently supplied with the sand to meet its daily consumption is a primary goal. The PropX mobile container operation works to meet this objective. The company's two-box enables the user to haul from 42,000 lb to 58,000 lb per trip. Light-weight trailer designs paired with day cab tractors provide the opportunity to maximize the volume of sand on each delivery based on localized department of transportation allowances. The company works closely with trucking providers to maximize the number of deliveries per driving shift. Figure 1 offers an example of 28 trucks delivered 799 loads of sand from a transload in West Texas to a nearby pad site in seven days. The drivers averaged 4.1 loads per shift, which equates to a delivery every 12.6 min- utes. This example further demonstrates the value of reducing offload time on site. Any pneumatic system would require at least 35 trucks to deliver the same 799 loads during that same period, which results in a 20% efficiency and utilization gain. Although obstacles are expected in the oil field, disruptions can arise that cause the supply chain to react and shift sand deliveries to overcome short- term challenges. PropX provides flexible, in-basin temporary storage and forward staging to overcome these challenges. Forward staging moves an ever-changing portion of the sand supply from the bottlenecks to intermediate depots where it can be delivered and accounted for with swift precision. This enables trucking resources to remain flexible and utilized at full capacity, even during the inevitable operational starts and stops. Adding addi- tional storage at the pad site may yield a similar result in the short term, but it limits that benefit to that single pad site rather than to the entire supply ecosystem. Forward staging and intrinsic product mobility may enable multiple frack operations to continue during a challenging period while proactively preparing for the next unexpected disruption. n Logistics Strategies are Unlocking Operational Value By Matt Oehler, Brian Dorfman and Kevin Fisher PropX Portable, nimble and maneuverable mobile frack sand containers have begun to replace the incumbent technology. 0 1 2 3 4 5 6 7 Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 Day 9 Day 10 Day 11 Day 12 A vg. Deliveries/Driver/Da y Figure 1: Average Deliveries/Driver/Day (Pneumatic vs. PropX) Avg. Deliveries/Driver (Pneumatic 25 Miles) Avg. Deliveries/Driver (PropX 25 Miles) (Data courtesy of PropX)

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