MOSCOW- Russia's No.2 oil producer Lukoil said on Wednesday its second-quarter net profit increased 21.4% from the previous three months to 181.2 billion roubles ($2.75 billion) thanks to lower income tax.

Sales increased by almost 15% from the previous quarter to 2.1 trillion roubles on higher oil and gas prices as well as rising trading volumes of oil and refined products, Lukoil said in a statement.

($1 = 65.9950 roubles)

(Reporting by Maria Kiselyova and Vladimir Soldatkin; Editing by Tom Balmforth) ((vladimir.soldatkin@reuters.com; +7 495 775 12 42))