UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): February 21, 2010

SCHLUMBERGER N.V. (SCHLUMBERGER LIMITED)

(Exact name of registrant as specified in its charter)

42, rue Saint-Dominique, Paris, France 75007

5599 San Felipe, 17th Floor, Houston, Texas 77056

Parkstraat 83, The Hague, The Netherlands 2514 JG

(Addresses of principal executive offices and zip or postal codes)

Registrant’s telephone number in the United States, including area code: (713) 513-2000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

On February 21, 2010, Schlumberger Limited, a company organized under the laws of the Netherlands Antilles (“Schlumberger”), and Smith International, Inc., a Delaware corporation (“Smith”), issued a combined press release announcing the execution of a Merger Agreement among Schlumberger, Turnberry Merger Sub Inc., a Delaware corporation and a direct wholly owned subsidiary of Schlumberger (“Merger Sub”), and Smith (the “Merger Agreement”). Under the terms of the Merger Agreement, Merger Sub will merge with and into Smith, with Smith as the surviving entity, and Smith will become a wholly owned subsidiary of Schlumberger.

A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

Information required by Item 1.01 will be filed in a separate Current Report on Form 8-K.

Additional Information

STOCKHOLDERS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND REGISTRATION STATEMENT REGARDING THE PROPOSED TRANSACTION WHEN IT BECOMES AVAILABLE BECAUSE IT WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. These documents will contain important information about the proposed transaction that should be read carefully before any decision is made with respect to the proposed transaction. These materials will be made available to the shareholders of Smith at no expense to them. Investors and security holders will be able to obtain the documents (when available) free of charge at the SEC’s web site, www.sec.gov. In addition, such materials (and all other documents filed with the SEC) will be available free of charge at www.smith.com or www.SLB.com. Such documents are not currently available. You may also read and copy any reports, statements and other information filed by Smith or Schlumberger with the SEC at the SEC public reference room at 100 F Street N.E., Room 1580, Washington, D.C. 20549. Please call the SEC at (800) 732-0330 or visit the SEC’s website for further information on its public reference room.

Each company’s directors and executive officers and other persons may be deemed, under SEC rules, to be participants in the solicitation of proxies in connection with the proposed transaction. Information regarding Schlumberger’s directors and officers can be found in its preliminary proxy statement filed with the SEC on February 9, 2010 and information regarding Smith’s directors and officers can be found in its proxy statement filed with the SEC on April 13, 2009. Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests in the transaction, by security holdings or otherwise, will be contained in the proxy statement/prospectus and other relevant materials to be filed with the SEC when they become available.

Forward-Looking Statements

This material includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. The opinions, forecasts, projections, or other statements other than statements of historical fact, are forward-looking statements. Similarly, statements that describe our future plans, objectives or goals or future revenues or other financial metrics are also forward-looking statements. Although the Company believes that the expectations reflected in such forward-

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looking statements are reasonable, it can give no assurance that such expectations will prove to have been correct. These statements are subject to, among other things, satisfaction of the closing conditions to the merger, the risk that the contemplated merger does not occur, negative effects from the pendency of the merger, the ability to successfully integrate the merged businesses and to realize expected synergies, the risk that we will not be able to retain key employees, expenses of the merger, and other risk factors that are discussed in Schlumberger’s Form 10-K for the fiscal year ended December 31, 2009, Smith’s Form 10-K for the fiscal year ended December 31, 2008 and each company’s other filings with the SEC available at the SEC’s Internet site (http://www.sec.gov). Should one or more of these risks or uncertainties materialize, or should the assumptions prove incorrect, actual results may differ materially from those expected, estimated or projected. Forward-looking statements speak only as of the date they are made, and we undertake no obligation to publicly update or revise any of them in light of new information, future events or otherwise.

99.1    Joint Press Release dated February 21, 2010.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: February 22, 2010

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