As part of its ongoing commitment to debt reduction, Schlumberger Limited announced that Schlumberger Investment SA, an indirect wholly-owned subsidiary of Schlumberger (?SISA?), will redeem the entire outstanding principal amount of its 2.40% Senior Notes due 2022 (CUSIP Nos. 806854AD7 /L81445AD7; and ISIN Nos. US806854AD77 /USL81445AD75) (the ?Notes?). The redemption date for the Notes is May 2, 2022. The aggregate principal amount of the Notes outstanding is $1,000,000,000. SISA has deposited sufficient funds with The Bank of New York Mellon, the trustee under the indenture governing the Notes, to satisfy and discharge the Notes and the indenture with respect to the Notes (including payment of the February 1, 2022 interest payment with respect to the Notes and the redemption price payable on the Redemption Date), and the trustee has acknowledged such satisfaction and discharge. The Notes will be redeemed on the Redemption Date at a redemption price for the Notes equal to (a) 100% of the aggregate principal amount being redeemed, plus (b) accrued and unpaid interest on the Notes from the February 1, 2022 interest payment date to, but excluding, the Redemption Date. On and after the Redemption Date, the Notes will cease to be outstanding and interest will cease to accrue on the Notes. Notices of redemption are being sent by the trustee for the Notes to all currently registered holders of the Notes.