TOKYO, June 20 (Reuters) - Oil prices inched up from seven-month lows in Asian trading on Tuesday, but gains were limited as investors focused on persistent signs of rising supply that are undermining attempts by OPEC and other producers to support prices.
Brent LCOc1 futures were up 13 cents at $47.04 at 0034 GMT. On Monday, they fell 46 cents, or 1 percent, to settle at $46.91 a barrel.
That was their lowest since Nov. 29, the day before the Organization of the Petroleum Exporting Countries (OPEC) and other producers agreed to cut output for six months from January.
U.S. West Texas Intermediate crude CLc1 futures were up 13 cents at $44.33 a barrel.
They declined 54 cents, or 1.2 percent in the previous session, to settle at $44.20 per barrel, the lowest close since Nov. 14. The July contract will expire on Tuesday and August will become the front month.
Both benchmarks are down around 15 percent since late May, when OPEC, Russia and other producers extended by nine months the cut in output by 1.8 million barrels per day (mb/d).
"Recent data points are not encouraging," Morgan Stanley (NYSE:MS) said in a research note. "Identifiable oil inventories - both crude and product in the OECD, China and selected other non-OECD countries - increased at a rate of (about) 1.0 mb/d in 1Q."
OPEC supplies jumped in May as output recovered in Libya and Nigeria, two countries exempt from the production cut agreement.
Libya's oil production has risen more than 50,000 bpd after the state oil company settled a dispute with Germany's Wintershall, a Libyan source told Reuters.
Analysts said rising U.S. crude production has fed the global glut. Data on Friday showed a record 22nd consecutive week of increases in U.S. oil rigs.