* U.S. rig count rises to 825, highest since March, 2015
* Production dips in Angola, Venezuela support prices
By Koustav Samanta
SINGAPORE, April 30 (Reuters) - Oil prices edged lower on Monday as a rising rig count in the United States pointed to higher production, but prices held near more than three-year highs and were on track to rise for a second consecutive month.
The oil complex has been driven by supply concerns amid prospects of the United States reimposing sanctions on Iran, while OPEC-led producers continue to withhold supplies.
Brent crude futures, the international benchmark, dipped 34 cents, or 0.5 percent, to $74.30 a barrel in early trading. Prices climbed as high as $75.47 last week, levels not seen since November, 2014.
U.S. West Texas Intermediate (WTI) crude futures were at $67.98 a barrel, down 12 cents, or about 0.2 percent, from their last settlement.
"There's a small drop in trading this morning but volumes are low and there's not much commitment in the selling. The overall trend is positive and there's potential for the market to close higher again today," said Michael McCarthy, chief marketing strategist at CMC Markets.
"The underlying strength in crude markets is quite impressive and a lot of it is predicated by sanctions... Other than that it's the demand picture around the globe, and if that continues we could see higher prices."
U.S. drillers added five oil rigs in the week to April 27, bringing the total count to 825, the highest level since March 2015, General Electric's Baker Hughes energy services firm said.
"The increase in rigs is modestly bearish for oil prices because increasing rigs is usually associated with increasing supply," Bill O'Grady, chief market strategist at Confluence Investment Management said in an email.
"However, the increase in rigs was modest and this news is overshadowed by other things, including Angola's production decline, the potential for an end to the Iranian nuke deal, continued threats by Houthis to Saudi oil shipping and infrastructure."
U.S. crude production C-OUT-T-EIA has soared more than 25 percent since mid-2016 to a record 10.59 million barrels per day (bpd). Only Russia currently produces more, at around 11 million bpd.
Brent prices have gained nearly 6 percent this month, buoyed by expectations the United States will renew sanctions.
U.S. President Donald Trump has until May 12 to decide whether to restore sanctions on Iran that were lifted after an agreement over its disputed nuclear programme.
"Precisely what happens with Tehran's nuclear program remains the most significant driver in oil price sentiment," said Stephen Innes, head of trading for Asia-Pacific at futures brokerage OANDA. (Reporting by Koustav Samanta in Singapore; editing by Richard Pullin)