* OPEC exporters appear to be cutting output as promised
* Higher prices spur more U.S. drilling and oil production
* U.S. tax reforms could transform global oil market-Goldman Sachs
* World oil inventories fell sharply in Q4 -Bernstein
* Coming Up: API's U.S. weekly oil stock data at 2130 GMT Tuesday (Adds API data, price move, paragraphs 5, 6)
By Scott DiSavino
NEW YORK, Jan 24 (Reuters) - Oil prices edged higher on Tuesday ahead of weekly U.S. inventory data on evidence the global market is tightening as lower production by OPEC and other exporters drains stocks.
Increased drilling in the United States, however, could keep a lid on prices.
Brent LCOc1 futures gained 21 cents, or 0.4 percent, to settle at $55.44 a barrel, while U.S. West Texas Intermediate CLc1 gained 43 cents or 0.8 percent, to $53.18 per barrel.
That put WTI up for a fourth day in a row, its longest winning streak since the end of December.
Post settlement, prices pared gains after weekly inventory data from The American Petroleum Institute (API) showed U.S. crude, gasoline and diesel stocks all rose last week. API/S
The Energy Information Administration (EIA) will report its data at 10:30 a.m. EST (1530 GMT) on Wednesday.
Ministers from the Organization of the Petroleum Exporting Countries (OPEC) and big producers outside the group said on Sunday that of the almost 1.8 million barrels per day (bpd) they had agreed to remove from the market starting on Jan. 1, 1.5 million bpd had already been cut. Arabia's oil output is likely to drop to around 9.9 million bpd in January, according to industry sources and shipping data. The kingdom said it pumped 10.47 million bpd in December. comments out of OPEC are the primary reasons for the price increase on Tuesday. That and recent weakness in the dollar, which is actually masking some serious weakness in oil," said Phil Davis, managing partner at PSW Investments in Woodland Park, New Jersey.
The U.S. dollar .DXY settled at a seven-week low against a basket of currencies on Monday, but was up nearly 0.15 percent Tuesday afternoon. A weaker greenback makes dollar-denominated crude less expensive for users of other currencies.
Bernstein Energy said global oil inventories declined 24 million barrels to 5.7 billion barrels in the fourth quarter of last year from the previous quarter. This amounts to about 60 days of world oil consumption.
"This is the biggest quarterly decline since the fourth quarter of 2013, confirming that inventory builds are now reversing as the market shifts from oversupply to undersupply," Bernstein analysts said in a note to clients.
Analysts, however, estimated U.S. crude stocks increased by about 2.8 million barrels in the week to Jan. 20. EIA/S
The push by Republicans in the U.S. House of Representatives for a shift to border-adjusted corporate tax (BTA) could push WTI prices higher than Brent, triggering large-scale domestic production, according to analysts at Goldman Sachs (NYSE:GS). expect WTI could move to a $10 per barrel premium to Brent from a $3 discount - a $13 (+25 percent) relative move immediately."
Brent's premium to WTI WTCLc1-LCOc1 narrowed on Tuesday by about 26 cents to $2.22 per barrel.
U.S. drillers last week added the most rigs in nearly four years, data from energy services company Baker Hughes showed on Friday, extending an eight-month drilling recovery. is gradually coming to the realization that they may have received more than they bargained for in re-activating U.S. drilling activity," Jim Ritterbusch, president of Chicago-based energy advisory firm Ritterbusch & Associates, said in a note.
U.S. oil production has risen by more than 6 percent since mid-2016, though it remains 7 percent below the 2015 peak. It is back to levels reached in late 2014, when strong U.S. crude output contributed to a crash in oil prices.