Adds outlook details in paragraphs 2-4

March 11 (Reuters) - Oilfield services firm SLB SLB.N said on Wednesday escalating tensions in the Middle East would hit its first-quarter earnings by about 6 cents to 9 cents per share.

The company said the disruptions would also push first-quarter revenue below previous expectations.

SLB added it has begun demobilizing operations in some countries after customers moved to safeguard staff and infrastructure amid rising tensions.

SLB said it has activated local and regional crisis response teams that are meeting daily, while travel to and transit through parts of the Middle East have been suspended.