WILLISTON, N.D., Jan 30 (Reuters) - Chevron Corp, the second-largest U.S. oil producer, said on Friday its quarterly profit fell 30 percent due to plunging crude prices .
The company posted fourth-quarter net income of $3.47 billion, or $1.85 per share, compared with $4.93 billion, or $2.57 per share, in the year-ago period.
Foreign currency conversion charges dented earnings by $432 million, Chevron said.
Production between the quarters held steady at 2.58 million barrels of oil equivalent per day (boepd).
Shares of the San Ramon, Calif.-based company are down about 22 percent in the past six months, closing Thursday at $103 per share. (Reporting by Ernest Scheyder, Editing by Franklin Paul)