Oilfield flares are a bright indicator of rapidly rising oil production that exceeds pipeline capacity. And it raises the question: Why are oil companies in such a hurry? The very first fracturing job used sand scooped from a nearby river. After decades of buying sand based on tight size standards, unconventional operators are increasingly going back to a broad range of sizes, similar to that river sand. With the purchase, the growing, privately-held Chrysaor Holdings will expand its UK North Sea production to 185,000 BOE/D.