Oil prices rose for a sixth day on Wednesday supported by robust US economic growth and the risk of supply disruptions from Venezuela and Russia. Brent crude futures climbed 17 cents, or 0.27%, to $62.55 a barrel by 0714 GMT, while US West Texas Intermediate crude added 20 cents, or 0.34%, to $58.58. Both contracts have gained about 6% since December 16, when they plunged to near five-year l