Libya's National Oil Corp. said oil production is the highest it's been in more than a year.
"Libyan oil production is 700,000 barrels per day," the NOC said.
The Libyan government brokered a deal in April with eastern rebel leaders to re-open oil export terminals. An eight-month blockade from rebels seeking more autonomy for the region known as Cyrenaica had cut Libya's oil export potential dramatically.
Libya since the end of civil war in 2011 has struggled to maintain a stable level of oil production. Early 2014 output had been limited to around 250,000 bpd.
The Organization of Petroleum Exporting Countries said production in July, the last full month for which data are available, was close to 450,000 bpd and more than double the June level.
The production increase comes as a new government sought refuge in eastern Libya and Tripoli fell into the hands of rival militias.