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According to the company's website, Schlumberger has been active in Iran since 1936, when it drilled an oil well in the Masjid-i-Sulaiman area. The company is also involved in logging operations in Iran, which have continued uninterrupted to the present day, except during World War II (Schlumberger Website, accessed July 20, 2010).

In November 2010, Schlumberger informed the U.S. Department of State that it would pull out of Iran when its current contracts are complete, according to Upstream Online (Upstream Online, November 12, 2010).

In its quarterly filing with the Securities & Exchange Commission in March 2013, Schlumberger noted that it "intends to discontinue such activity in Iran in 2013 and is currently winding down its operations there." The company reported that it made $98 million, resulting in $56 million in net income from its operations in Iran (SCHLUMBERGER N.V. Form 10-Q, March 30, 2013).

Date: 2003

Deal: According to an industry publication, Schlumberger provided technical assistance to Iranian firm Naftkav in 2003 by reviewing Naftkav's development plan for the South Pars gas field. Schlumberger spokesperson Mary Jo Caliandro said, the company "provided neither investment nor goods and was not involved in any way contrary to any applicable [sanctions] restrictions" (The Oil Daily, June 5, 2003).

Date: 2004

Deal: According to the Iran Times International, Schlumberger signed an agreement with the National Iranian Oil Company (NIOC) in 2004 to explore ways to boost Iran's crude oil production (Iran Times International, March 27, 2009). The Iranian Ministry of Petroleum lists an agreement between NIOC and Schlumberger for joint research projects on its website (Iran Ministry of Petroleum Website, accessed July 20, 2010).

Date: December 2008

Deal: In December 2008, The Boston Globe revealed that Schlumberger had sold a drilling tool to Iran using its foreign subsidiaries. "While helping to enrich Iran's economy, the drilling tool also presents a potential risk to American security, were it to fall into the wrong hands. It is powered by a radioactive chemical that scientists say could fuel a so-called "dirty bomb," capable of spreading radiation across many city blocks" (The Boston Globe, December 7, 2008).

U.S. Business Ties: According to the Boston Globe, for the past 60 years, Schlumberger has maintained labs in Texas and New England and has received funding from U.S. government contracts. "In the past decade, Schlumberger had received modest contracts with the U.S. Navy to supply communications and radar equipment, with NASA to deploy sensor equipment to measure asteroids, and with the Department of the Interior for help with mapping mineral resources, among others. And it signed a new Department of Energy contract in 2006 to develop another new oil field tool" (The Boston Globe, December 7, 2008).

According to, Schlumberger N.V. has received $49,280,158 in U.S. government contracts in the last 14 years (, accessed July 7, 2014).

According to Platts Oilgram News, Schlumberger announced in February 2010 that it was planning a $12.4 billion merger with Smith International, an oil field services company based in Houston, Texas. Smith has used its foreign subsidiaries to do business in Iran and Sudan, but claimed in an SEC filing that it was terminating its business there (Platts Oilgram News, March 3, 2010).

Last Updated: August 18, 2014