SCHLUMBERGER LTD REG. SHARES DL -.01 revenue for the last year amounted to 32.96 B CHF, the most of which — 12.13 B CHF — came from its highest performing source at the moment, Well Construction, the year earlier bringing 11.35 B CHF. The greatest contribution to the revenue figure was made by Middle East & Asia — last year it brought SCHLUMBERGER LTD REG. SHARES DL -.01 11.83 B CHF, and the year before that — 9.28 B CHF.