<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>erofattorneystephenorr.txt
<TEXT>
SCHLUMBERGER LIMITED
POWER OF ATTORNEY

	The undersigned, in his capacity as a director or
officer, or both, of Schlumberger Limited, a Curacao
corporation (the ?Company?), does hereby appoint each of Saul
R. Laureles and Lynda M. Quagliara, or either of them acting
singly, his/her true and lawful attorney-in fact with full
power of substitution, to (a) prepare, execute in the
undersigned?s name and on the undersigned?s behalf, and submit
to the U.S. Securities and Exchange Commission (the ?SEC?) a
Form ID, including amendments thereto, and any other documents
necessary or appropriate to obtain codes, passwords and
passphrases enabling the undersigned to make electronic
filings with the SEC of reports required by Section 16(a) of
the Securities Exchange Act of 1934, as amended (the ?Exchange
Act?), or any rule or regulation of the SEC; and (b) execute
for and on behalf of the undersigned, in the undersigned?s
capacity as a director or officer, or both, of the Company,
Forms 3, 4 and 5 in accordance with Section 16 of the Exchange
Act, as well as Forms 144, and complete and execute any
amendment or amendments thereto, and to file the same or cause
the same to be filed with the SEC.

	This Power of Attorney supersedes any and all prior and
existing powers of attorney signed by the undersigned with
respect to the subject matter hereof, and shall remain in full
force and effect until the undersigned is no longer required
to file Forms 3, 4, 5 or 144 with respect to the undersigned?s
holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact.

May 8, 2012			\s\ Stephen Orr
					Stephen Orr

</TEXT>
</DOCUMENT>
