U.S. energy firms this week added oil and natural gas rigs for a fifth time in six weeks as offshore units in the Gulf of Mexico (GoM) started to return after Hurricane Ida slammed into the coast.

This week, four offshore rigs returned in Louisiana, Baker Hughes Co. said in its report Sept. 10.

Last week, all 14 offshore oil rigs operating in the GoM shut due to Ida. All of them were located offshore Louisiana.

Overall, the oil and gas rig count has increased for 13 months in a row through August as rising oil prices have prompted drillers to return to the wellpad.

The oil and gas rig count, an early indicator of future output, rose six to 503 in the week to Sept. 10, Baker Hughes said. That puts the total rig count up 249 rigs, or 98%, over this time last year.

U.S. oil rigs rose seven to 401 this week, while gas rigs fell one to 101.

U.S. crude futures were trading at about $70 per barrel Sept. 10, supported by growing signs of supply tightness in the United States as a result of Hurricane Ida.

With oil prices up about 43% so far this year, some energy firms said they plan to boost spending in 2021 after cutting drilling and completion expenditures over the past two years.

That spending increase, however, remains small as most firms continue to focus on boosting cash flow, reducing debt and increasing shareholder returns rather than adding output.

Many analysts do not expect that extra spending to boost output at all. Instead, they think it will only replace natural declines in well production.

U.S. oil production is expected to slide from 11.3 MMbbl/d in 2020 to 11.1 MMbbl/d in 2021 before rising to 11.7 MMbbl/d in 2022, according to government projections. That compares with the all-time annual high of 12.3 MMbbl/d in 2019.

U.S. financial services firm Cowen & Co. said the independent E&P companies it tracks plan to increase spending about 1% in 2021 versus 2020. That follows capex reductions of roughly 48% in 2020 and 12% in 2019.