Exhibit 23
Consent of Independent Registered Public Accounting Firm
We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-104225;
333-36364; 333-115277; 333-124534; 333-151920; and 333-173055, as amended by post-effective amendment on Form
S-8), on Form S-3 (No. 333-173368); and on Form S-4 (Nos. 333-97899 and 333-166326, as amended by post-effective
amendment on Form S-8) of Schlumberger Limited of our report dated January 31, 2013 relating to the consolidated
financial statements and the effectiveness of internal control over financial reporting, which appears in this Form
10-K.
/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Houston, Texas
January 31, 2013
