What originally started as a content partnership has ended with S&P Global Platts buying Texas-based oil field intelligence company RigData. The two companies confirmed the acquisition deal in a joint announcement on Thursday morning but did not disclose a sales price. Founded in 1986, Fort Worth-based RigData provides over 5,500 customers with daily electronic reports on drilling permits, activity and rig locations in the United States, the Gulf of Mexico and Canada. Customers use RigData's information...