[Editor's note: This story was updated at 1:20 p.m. CT March 30.]

Oil prices jumped for a third day on March 30 to their highest in three weeks after Kuwait gave its backing for an extension of OPEC production cuts in an attempt to reduce global oversupply.

Kuwait oil minister Essam al-Marzouq said his country was among several nations supporting the extension of a deal between OPEC and other exporters to limit output, state news agency KUNA reported.

The rebound has renewed some optimism after a period of three weeks where speculators aggressively reduced long positions following weeks of higher-than-expected inventory figures. Both Brent and U.S. crude reached their highest levels since March 9 on March 30.

Brent crude oil rose 41 cents, or about 0.8%, to $52.83 per barrel (bbl) by 12:33 p.m. CT (17:33 GMT), after hitting $53.10. U.S. West Texas Intermediate crude was 82 cents, or 1.7%, higher at $50.33/bbl, after touching $50.46.

"There is a significant chance that a short-to-medium-term bottom has been found," said Tamas Varga, analyst at London brokerage PVM Oil Associates.

Fears of oversupply still hang over the market as OPEC grapples to tighten the oil market because inventories in many parts of the world are at, or near record highs and as U.S. production rises.

OPEC agreed to reduce oil production by 1.2 MMbbl/d during the first six months. Output has fallen for a third straight month and members have complied with 95 percent of their commitments.

"I see no sign from OPEC and Saudi Arabia that they will not roll over the cut into the second half of the year ... the market is about to go from supply surplus to deficit on crude " said Scott Shelton, energy futures broker with ICAP in Durham, N.C.

Other oil exporters outside OPEC, including Russia, have also gradually reined in production.

Russia has reduced its output by 200,000 bbl/d in March in accordance with the agreement, the ministry quoted Energy Minister Alexander Novak as saying in a TV interview.

Libya said production dropped by about a third or 250,000 bbl/d earlier this week due to armed protesters blocking western oilfields of Sharara and Wafa.

The start-up of a 500,000 bbl/d crude pipeline in North Dakota next month, despite opposition by environmental groups and Native Americans, is expected to hasten a revival in output from the Bakken Shale region which fell sharply along with global oil prices during the past two years.