Image: Joey Podlubny/JWN The North American fracking market — already expected to be a downer for the holidays — is turning out to be even worse than expected, according to the world’s biggest oil service provider. Schlumberger Ltd. expects sales in the U.S. and Canada to drop 15 percent in the final three months of the year compared with the third quarter, the company said Tuesday. A trio of factors including a plunge in crude prices, exhausted exploration budgets and maxed-out pipelines in America’s busiest field is prompting oil companies to let go of frack crews. “We are seeing a significantly larger drop in activity than we expected, which is leading to a larger drop in pricing than we anticipated,” Patrick Schorn, executive vice president at the Houston- and Paris-based company, said in prepared remarks for an investor presentation. “We continue to see the weakening of the hydraulic fracturing market as temporary, with the expectation of a gradual recovery taking place over the first half of 2019.” The number of fracking crews at work in the Permian Basin of West Texas and New Mexico is down 13 percent from a 2018 high in June, according to Primary Vision Inc. […]