Some members of the Organization of the Petroleum Exporting Countries may not attend a meeting in Qatar next month at which oil producers plan to discuss a global pact to freeze production to support prices, OPEC’s secretary-general Abdalla Salem el-Badri said Monday. “I hear that about 15 countries are going to attend. Maybe some of our members will not attend. Some of non-OPEC members will not attend but 15 or 16 countries are…