Exxon Mobil Corp. is convinced its interpretation of intent in a Guyanese oil contract signed a decade ago will prevail in a landmark arbitration case against Chevron Corp.

Hess Corp. signaled its $53 billion agreement to be bought by Chevron Corp. may be delayed after ExxonMobil filed for arbitration to preserve its rights to a massive oil discovery off Guyana.

The Federal Trade Commission is investigating Chevron’s acquisition of Hess oil company, the second inquiry the independent agency has opened recently of a major oil industry merger.

Senate Majority Leader Chuck Schumer is urging the Federal Trade Commission to look into whether Exxon Mobil and Chevron’s proposed oil and gas acquisitions could violate antitrust laws.

Exxon Mobil’s third-quarter profit declined compared with last year when the oil giant put up record numbers as oil prices soared, but net income jumped 15% compared with Q2.

Chevron is buying Hess Corp. for $53 billion and it’s not even the biggest acquisition in the energy sector this month as major producers seize the initiative while oil prices surge.

Chevron Corp. bought a plot of land the size of almost 60 football fields just outside of Houston in preparation for what could become a new research-and-development campus.

Chevron Corp. agreed to buy oil and gas producer PDC Energy Inc. in a $6.3 billion all-stock deal as it seeks to expand amid what may be a busy year of mergers and acquisitions in U.S. shale.

Chevron Corp. plans to operate its California refinery “normally” amid a worker strike that began just after midnight on March 21, potentially limiting the impact on gasoline prices in the state.

Chevron Corp. agreed to buy green diesel producer Renewable Energy Group Inc. for $3.1 billion in the biggest low-carbon deal of CEO Mike Wirth’s four-year tenure.