HOUSTON, July 1 (Reuters) - Exxon Mobil Corp on Friday signaled skyrocketing margins from fuel and crude sales could generate a record quarterly profit, according to a securities filing.

Energy prices have shot up this year with oil selling for more than $105 per barrel and gasoline at about $5 per gallon in the United States. The enormous earnings are likely to ignite new calls for windfall profit taxes.

The largest U.S. oil producer projected a sequential increase of about $7.4 billion in operating profits compared to the first quarter. In the first quarter, Exxon posted an $8.8 billion profit, excluding a Russia writedown.

The filing indicates a potential profit of more than $16 billion. The company's peak quarterly profit was $15.9 billion in 2012.

The filing showed it expects higher oil and gas prices will add about $2.9 billion to results. Margins from selling gasoline and diesel will add another $4.5 billion to operating profits.

"High energy prices are largely a result of underinvestment by many in the energy industry over the last several years and especially during the pandemic," Exxon said in a statement on the profit gains.

Analysts tracked by IBES Refinitiv forecast a per share profit of $2.99, up from $1.10 in the same quarter a year ago. Official results for the period will be released on July 29, according to a summary of factors influencing the period disclosed late Friday.