(October 6, 2020, 3:09 PM EDT) -- HOUSTON — The chief financial officer of a hydraulic fracturing services company on Sept. 22 filed a declaration in a Texas bankruptcy court saying that a "price war" between Saudi Arabia and Russia combined with economic complications from the novel coronavirus caused "extreme volatility" in energy markets and drove it into Chapter 11 bankruptcy (In re: FTS International Inc., No. 20-34622, S.D. Texas Bkcy.)....