Based on financial statements from selected international oil and natural gas companies, spending on upstream investments was 12% lower in fourth-quarter 2014 compared to the same period in 2013. Upstream spending on exploration and development typically accounts for the bulk of these companies' investment expenditures.

Investment bankers and analysts entrenched in the oil and gas industry say companies have so far staved off the major negative impacts of the current industry downturn better than previous downturns by acting more proactively and aggressively.

Schlumberger CEO Paal Kibsgaard said Monday he expects global exploration and production capital expenditures to drop between 10 to 15 percent in 2015.