Schlumberger Ltd.'s (SLB) fourth-quarter earnings fell 3.7% amid merger and integration costs and lower revenue from its Europe/Commonwealth of Independent States/ Africa region.

Schlumberger, the world's largest oil-field-services company, has seen its revenue soar in recent quarters as exploration and production companies ramped up activity in areas like the deep-water U.S. Gulf of Mexico and vast oil-rich shale formations around the U.S. But the company warned last month its fourth-quarter earnings would take a hit from weaker-than-expected
North America activity and delays in Europe , the Commonwealth of Independent States and Africa .

Schlumberger reported a profit of $1.36 billion, or $1.02 a share, down from $1.41 billion, or $1.05 a share, a year earlier. Excluding items such as merger and integration costs, per-share earnings from continuing operations fell to $1.08 from $1.10. Revenue jumped 8.5% to $11.17 billion.

Analysts polled by Thomson Reuters had most recently forecast per-share earnings of $1.07 on revenue of $10.82 billion.

Operating margin fell to 16.2% from 18.2%.

Oil-field services revenue from
North America , the region which generates most of the top-line, rose 3.6% from the third quarter to $3.41 billion.

The Europe/Commonwealth of Independent States/
Africa region's revenue declined 1% from the prior quarter while the Middle East and Asia posted a 9.6% increase. Latin America revenue was up 11%, sequentially.

Shares closed Thursday at $73.37 and were inactive premarket.
The stock has gained 3.9% over the past year.