U.S. energy firms this week reduced the number of oil rigs operating for a fourth week in a row with drilling slowing to its lowest in nearly a year, prompting the government to cut crude output growth forecasts.

Drillers cut one oil rig in the week to March 15, bringing the total count down to 833, the lowest since April 2018, General Electric Co.'s Baker Hughes energy services firm said in its closely followed report on March 15.

That is the first time the rig count has declined for four weeks in a row since May 2016 when it fell for eight consecutive weeks.

The U.S. rig count, an early indicator of future output, is a little higher than a year ago when 800 rigs were active after energy companies boosted spending in 2018 to capture higher prices that year.

Drilling has slowed with the rig count contracting in the past three months as independent exploration and production companies cut spending as they focus on earnings growth instead of increased output with crude prices projected to decline this year versus 2018.

U.S. crude oil production is expected to grow slower than previously expected in 2019 and average a record high 12.3 million barrels per day (MMbbl/d), the U.S. Energy Information Administration (EIA) said on March 12.

Last month, EIA projected oil output would average 12.4 MMbbl/d in 2019.

Crude production slipped 100,000 bpd from its record high to 12 MMbbl/d last week, the agency also said.

However, the U.S. will drive global oil supply growth over the next five years, with domestic production rising 2.8 MMbbl/d to 13.7 million by 2024, the International Energy Agency said this week.

U.S. crude futures were trading at a four-month high around $59 a barrel on March 15, putting the front-month on track to rise over 25% this year after OPEC and its allies began to cut output in January.

Looking ahead, crude futures were trading around $59 a barrel for the balance of 2019 and calendar 2020.

U.S. financial services firm Cowen & Co said this week that projections from the exploration and production (E&P) companies it tracks point to 5 percent decline in capital expenditures for drilling and completions in 2019 versus 2018.

Cowen said independents expect to spend about 12% less in 2019, while international oil companies plan to spend 16 percent more.

In total, Cowen said all of the E&P companies it tracks spent about $92.8 billion in 2018.

There were 1,026 oil and natural gas rigs active in the U.S. this week, according to Baker Hughes. Most rigs produce both oil and gas.

Analysts at Simmons & Co, energy specialists at U.S. investment bank Piper Jaffray, this week forecast the average combined oil and gas rig count will fall from 1,032 in 2018 to 999 in 2019 before rising to 1,087 in 2020. That was the same as its predictions since the start of the year.

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