U.S. energy firms this week reduced the number of oil rigs operating for the first time in three weeks as production growth forecasts from shale, the country's largest oil fields, continue to shrink.

Drillers cut eight oil rigs in the week to April 18, bringing the total count down to 825, Baker Hughes Inc., the energy services firm of General Electric Co., said in its closely followed report.

Baker Hughes released the report a day early this week due to the Good Friday holiday.

The U.S. rig count, an early indicator of future output, is still a bit higher than a year ago when 820 rigs were active.

The rig count fell for the past four months and production growth in the Permian Basin and other key shale basins have slowed as oil prices fell in the fourth quarter and many independent shale companies cut spending in the face of investor pressure to focus on earnings growth instead of increased output.

Major oil companies, like Exxon Mobil Corp. and Chevron Corp., however, are boosting their presence, particularly in the Permian, the largest U.S. shale oil field.

U.S. crude oil output from seven major shale formations is expected to rise by about 80,000 barrels per day (bbl/d) in May to a record 8.46 million bbl/d, the U.S. Energy Information Administration said in its monthly drilling productivity report on April 15.

Although May's total, if accurate, would be a record high, the increase continues a pattern of shrinking growth since February.

U.S. crude futures traded near a five-month high of almost $65 per barrel for a second week in a row this week as a drop in crude exports from OPEC's defacto leader Saudi Arabia and a draw in U.S. oil inventories supported prices.

Looking ahead, crude futures were trading around $64 a barrel for the balance of 2019 and $61 in calendar 2020.

U.S. financial services firm Cowen & Co. has said that projections from the exploration and production companies it tracks point to a percentage decline in the mid-single digits in capex for drilling and completions in 2019 vs. 2018.

Cowen said independent producers expect to spend about 11% less in 2019, while major oil companies plan to spend about 16% more.

In total, Cowen said all of the E&P companies it tracks that have reported will spend about $81.0 billion in 2019 vs. $85.5 billion in 2018.

Year-to-date, the total number of oil and gas rigs active in the U.S. has averaged 1,039. That keeps the total count for 2019 on track to be the highest since 2014, which averaged 1,862 rigs. Most rigs produce both oil and gas.

Analysts at Simmons Energy, energy specialists at U.S. investment bank Piper Jaffray, however, forecast the average combined oil and gas rig count will slide from 1,032 in 2018 to 1,019 in 2019 before rising to 1,097 in 2020.

That is the same as Simmons predictions last week.