Venezuela has given the state-owned Petroleum Company of Trinidad and Tobago, also known as Petrotrin, approval to enter a joint venture to explore an offshore oil field near the maritime border of the South American nation with Trinidad. Petrotrin reportedly would take a 50 percent interest in the Gulf of Paria East block, a stake that was previously held by Enron Corp., the Number one U.S. natural gas and electricity marketer. No financial details of the deal were immediately available. A test well at the block produced 3,000 barrels a day of oil in February. Its Venezuelan operator Inelectra had said it would seek a partner with the financial muscle to help develop the field.