(Recasts to focus on production upgrade, adds CEO comment, details, share price)
LONDON Aug 21 (Reuters) - Oil and gas explorer Premier Oil may upgrade its 2014 production forecast after stronger-than-expected output in the first half of the year, pending the outcome of summer maintenance work, its Chief Executive said.
The company reported a 7 percent rise in first-half profit after tax on Thursday, helped by strong oil production from its British fields.
Premier Oil produced 64,900 barrels of oil equivalent per day (boepd) in the first half of the year, ahead of the firm's expectations of around 60,000 boepd.
"We would like to see the end of the summer maintenance programme before upgrading guidance," newly-appointed Chief Executive Tony Durrant told Reuters.
Premier Oil's current 2014 output target is 58,000-63,000 boepd.
The company is in a strong financial position with nearly $500 million in operating cash flow that it will use to finance exploration in Kenya, Norway and the Falkland Islands, and to make dividend payments, it said.
Shares in Premier Oil were trading 0.4 percent higher at 0742 GMT.
Its four-well drilling programme in the Falkland Islands, which it says could transform its resource base if successful, is expected to start in the second quarter of 2015.
Oil and gas drilling in the region remains controversial as tensions between Britain and Argentina remain high over the sovereignty of the Falklands.
Premier Oil's new prospect at Solan, west of the Scottish Shetland Islands, is expected to come on stream by the end of the year but progress depends on weather conditions.