US Cash Crude-Grades mixed as domestic crude stocks fall, fuels rise

July 16 (Reuters) - Grades were mixed on Wednesday, dealers said, and investors digested official U.S. oil stock data, which showed a drop in crude inventories and rise in fuel stocks last week.

Crude stockpiles fell by 3.9 million barrels to 422.2 million barrels in the week ended July 11, the Energy Information Administration said, compared with analysts' expectations in a Reuters poll for a 552,000-barrel draw.

Meanwhile, gasoline stocks rose by 3.4 million barrels in the week to 232.9 million barrels, the EIA said, compared with expectations for a one million-barrel draw.

Elsewhere, drone attacks for a third day on oilfields in Iraq's semi-autonomous Kurdistan region have slashed crude output by 140,000 to 150,000 barrels per day, two energy officials said on Wednesday, as infrastructure damage forced multiple shutdowns.

The region's total production was around 285,000 bpd, Iraqi Kurdistan energy officials said.

* Light Louisiana Sweet WTC-LLS for August delivery rose 15 cents to a midpoint of a $2.80 premium and was seen bid and offered between a $2.60 and $3.00 a barrel premium to U.S. crude futures CLc1

* Mars Sour WTC-MRS fell 5 cents to a midpoint of a 30-cent discount and was seen bid and offered between a 40-cent and 20-cent a barrel discount to U.S. crude futures CLc1

* WTI Midland WTC-WTM was steady at a midpoint of a 45-cent premium and was seen bid and offered between a 35-cent and 55-cent a barrel premium to U.S. crude futures CLc1

* West Texas Sour WTC-WTS rose 3 cents to a midpoint of a 10-cent discount and was seen bid and offered between a discount of 20 cents and parity to U.S. crude futures CLc1

* WTI at East Houston WTC-MEH, also known as MEH, traded between a 55-cent and 75-cent a barrel premium to U.S. crude futures CLc1

* ICE Brent September futures LCOc1 fell 19 cents to settle at $68.52 a barrel

* WTI August crude CLc1 futures fell 14 cents to settle at $66.38 a barrel

* The Brent/WTI spread WTCLc1-LCOc1 narrowed 3 cents to last trade at minus $3.31, after hitting a high of minus $3.25 and a low of minus $3.34