================================================================================ SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT Pursuant to Section 15(d) of the Securities Exchange Act of 1934 For the Fiscal Year Ended December 31, 1998 Commission File Number 001-04601 _______________ REED HOURLY THRIFT PLAN (Full title of the plan) _______________ SCHLUMBERGER LIMITED (Name of issuer of the securities held pursuant to the plan) 277 Park Avenue New York, NY 10172-2066 (Address, including zip code, of principal executive office) (212) 350-9400 (Telephone number, including area code) ================================================================================

REED HOURLY THRIFT PLAN INDEX TO FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULES ____________________ FINANCIAL STATEMENTS Page ---- Independent Auditors' Report.................................... 1 Statements of Net Assets Available for Benefits, December 31, 1998 and 1997..................................... 2 Statement of Changes in Net Assets Available for Benefits with Fund Information, Year Ended December 31, 1998................. 3 Notes to Financial Statements................................... 5 SUPPLEMENTAL SCHEDULES Schedule of Assets Held for Investment Purposes, December 31, 1998.............................................. 9 Schedule of Reportable Transactions, Year Ended December 31, 1998................................... 10 All other schedules are omitted because they are not applicable, not required or the information is included in the Notes to Financial Statements. ____________________ SIGNATURES THE PLAN. Pursuant to the requirement of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have caused this annual report to be signed on their behalf by the undersigned hereunto duly authorized. REED HOURLY THRIFT PLAN BY /s/ J. CHRISTOPHER HOLLAND -------------------------------- J. Christopher Holland Secretary, Retirement Plan Committee Date: June 11, 1999

INDEPENDENT AUDITORS' REPORT To the Retirement Plan Committee of the Reed Hourly Thrift Plan: We have audited the accompanying statements of net assets available for benefits of the Reed Hourly Thrift Plan as of December 31, 1998 and 1997, and the related statement of changes in net assets available for benefits for the year ended December 31, 1998. These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for benefits of the Reed Hourly Thrift Plan as of December 31, 1998 and 1997, and the changes in net assets available for benefits for the year ended December 31, 1998, in conformity with generally accepted accounting principles. Our audits were conducted for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedules of assets held for investment purposes and reportable transactions are presented for the purpose of additional analysis and are not a required part of the basic financial statements but are supplementary information required by the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. These supplemental schedules are the responsibility of the Plan's management. The Fund Information in the statement of changes in net assets available for benefits is presented for purposes of additional analysis rather than to present the changes in net assets available for plan benefits of each fund. The supplemental schedules and Fund Information have been subjected to the auditing procedures applied in the audits of the basic financial statements and, in our opinion, are fairly stated in all material respects in relation to the basic financial statements taken as a whole. /s/ LARKIN, ERVIN & SHIRLEY, L.L.P. Houston, Texas June 11, 1999 -1-

REED HOURLY THRIFT PLAN Statements of Net Assets Available for Benefits December 31 1998 1997 ----------------- ----------------- Assets Investments: At fair value - Registered investment company shares: IDS International Fund $ 50,498 $ 23,012 IDS New Dimensions Fund 1,180,049 805,582 IDS Stock Fund - 311,063 IDS Mutual Fund 151,108 131,895 IDS Federal Income Fund 1,571,334 1,426,026 AIM Constellation Fund 98,432 - Camco/Schlumberger Stock Fund 35,413 13,758 Participant notes receivable 536,384 372,997 ----------------- ----------------- 3,623,218 3,084,333 ----------------- ----------------- At contract value - AET Equity Index Fund I 301,662 - AET Income Fund II 1,597,335 1,551,701 ----------------- ----------------- 1,898,997 1,551,701 ----------------- ----------------- Total investments 5,522,215 4,636,034 Other assets - - ----------------- ----------------- Total assets 5,522,215 4,636,034 Liabilities Total liabilities - - ----------------- ----------------- Net assets available for benefits $ 5,522,215 $ 4,636,034 ================= ================= The accompanying notes are an integral part of these financial statements. -2-

REED HOURLY THRIFT PLAN Statement of Changes in Net Assets Available for Benefits with Fund Information For the Year Ended December 31, 1998 IDS IDS New IDS IDS International Dimensions Stock Mutual Fund Fund Fund Fund --------------- ------------ ---------- --------- Additions Additions to net assets attributed to: Investment income Net appreciation/(depreciation) in fair value of investments $ (567) $ 163,933 $ 12,074 $ (7,290) Interest - - - - Dividends 838 67,534 2,686 20,226 --------------- ------------ ---------- --------- 271 231,467 14,760 12,936 --------------- ------------ ---------- --------- Contributions Participants' 7,663 116,697 29,476 18,766 Employer's 3,522 39,558 11,362 8,269 --------------- ------------ ---------- --------- 11,185 156,255 40,838 27,035 --------------- ------------ ---------- --------- Total additions 11,456 387,722 55,598 39,971 --------------- ------------ ---------- --------- Deductions Deductions from net assets attributable to: Benefits paid to participants 302 29,422 6,180 5,434 Administrative expenses 30 326 91 109 --------------- ------------ ---------- --------- Total deductions 332 29,748 6,271 5,543 --------------- ------------ ---------- --------- Net increase prior to interfund transfers 11,124 357,974 49,327 34,428 Interfund transfers 16,362 16,493 (360,390) (15,215) --------------- ------------ ---------- --------- Net increase/(decrease) 27,486 374,467 (311,063) 19,213 Net assets available for benefits: Beginning of year 23,012 805,582 311,063 131,895 --------------- ------------ ---------- --------- End of year $ 50,498 $ 1,180,049 $ - $ 151,108 =============== ============ ========== ========= IDS AIM AET AET Federal Constellation Equity Index Income Income Fund Fund Fund I Fund II ------------- --------------- -------------- ----------- Additions Additions to net assets attributed to: Investment income Net appreciation/(depreciation) in fair value of investments $ (5,624) $ (373) $ 36,669 $ 93,621 Interest - - - - Dividends 104,938 2,414 - - ------------- --------------- -------------- ----------- 99,314 2,041 36,669 93,621 ------------- --------------- -------------- ----------- Contributions Participants' 128,086 3,465 9,724 151,877 Employer's 52,802 762 2,230 61,341 ------------- --------------- -------------- ----------- 180,888 4,227 11,954 213,218 ------------- --------------- -------------- ----------- Total additions 280,202 6,268 48,623 306,839 ------------- --------------- -------------- ----------- Deductions Deductions from net assets attributable to: Benefits paid to participants 80,378 - 3,592 134,799 Administrative expenses 759 7 38 803 ------------- --------------- -------------- ----------- Total deductions 81,137 7 3,630 135,602 ------------- --------------- -------------- ----------- Net increase prior to interfund transfers 199,065 6,261 44,993 171,237 Interfund transfers (53,757) 92,171 256,669 (125,603) ------------- --------------- -------------- ----------- Net increase/(decrease) 145,308 98,432 301,662 45,634 Net assets available for benefits: Beginning of year 1,426,026 - - 1,551,701 ------------- --------------- -------------- ----------- End of year $ 1,571,334 $ 98,432 $ 301,662 $ 1,597,335 ============= =============== ============== =========== The accompanying notes are an integral part of these financial statements. -3-

REED HOURLY THRIFT PLAN Statement of Changes in Net Assets Available for Benefits with Fund Information For the Year Ended December 31, 1998 Camco/ Schlumberger Participant Stock Fund Notes Total ------------------- ------------------- ------------------- Additions Additions to net assets attributed to: Investment income Net appreciation/(depreciation) in fair value of investments $ (6,035) $ - $ 286,408 Interest - 37,351 37,351 Dividends 149 - 198,785 ------------------- ------------------- ------------------- (5,886) 37,351 522,544 ------------------- ------------------- ------------------- Contributions Participants' 4,791 - 470,545 Employer's 1,838 - 181,684 ------------------- ------------------- ------------------- 6,629 - 652,229 ------------------- ------------------- ------------------- Total additions 743 37,351 1,174,773 ------------------- ------------------- ------------------- Deductions Deductions from net assets attributable to: Benefits paid to participants 12 26,301 286,420 Administrative expenses 9 - 2,172 ------------------- ------------------- ------------------- Total deductions 21 26,301 288,592 ------------------- ------------------- ------------------- Net increase prior to interfund transfers 722 11,050 886,181 Interfund transfers 20,933 152,337 - ------------------- ------------------- ------------------- Net increase/(decrease) 21,655 163,387 886,181 Net assets available for benefits: Beginning of year 13,758 372,997 4,636,034 ------------------- ------------------- ------------------- End of year $ 35,413 $ 536,384 $ 5,522,215 =================== =================== =================== The accompanying notes are an integral part of these financial statements. -4-

REED HOURLY THRIFT PLAN Notes to Financial Statements December 31, 1998 Note 1 - Description of the Plan The Reed Hourly Thrift Plan (the "Plan"), a defined contribution plan, was established on January 1, 1991. It covers substantially all bargaining unit employees of the Reed Tool Company Division of Camco International Inc. (the "Company"). The following description of the Plan and Plan Amendments is provided for general purposes only. Participants should refer to the Plan Document, as amended, for more complete information. General Administration of the Plan is conducted by a committee consisting of no less than three members appointed by the board of directors of the Company. The board of directors has appointed two officers of the Company as Trustees for the Plan. American Express Trust Company ("American Express") is asset custodian and record keeper for the Plan. Eligibility and Vesting Employees are eligible to participate in the Plan after completing one hour of service. Participants are fully vested in their contributions and the related earnings/losses. Participants vest in Company matching contributions and related earnings/losses at 20% per year, becoming fully vested after five years of service. In the event the Plan is partially or completely terminated, all participants will become 100% vested in their account balances. Contributions Participants may elect to defer from 1% to 15% of their compensation on a pre- tax basis, subject to maximum annual contributions of $10,000 ($9,500 in 1997), and have the Company contribute to the Plan on their behalf the amount so deferred. After-tax contributions of up to 10% of compensation are also permitted. The Company makes matching contributions of 50% of participants' pre-tax contributions up to a maximum contribution amount of $1,500 per year. Expenses The accounts of participants are charged fees of $2.50 per quarter, which are applied to the cost of administering the Plan. Transaction fees are also charged for participant loans, withdrawals and distributions. For the years ending December 31, 1998 and 1997, the Company elected to pay all administrative expenses in excess of these fees. -5-

Withdrawals All after-tax contributions may be withdrawn by participants by making written application to the Plan's record keeper. Company matching contributions, pre- tax contributions and rollover contributions may be withdrawn after the participant has attained age 59-1/2 or if the participant suffers an immediate and heavy financial hardship that cannot be satisfied from other reasonably available resources. Additionally, Company matching contributions may be withdrawn only if they have been credited to a participant's account for more than two years. No more than one withdrawal may be made during any calendar quarter. Loans Participants may borrow a portion of their account balance to relieve a financial hardship or for any other suitable purpose. Loan amounts are limited in accordance with a formula based on 50% of the present value of a participant's vested account balance, not to exceed $50,000. Loans must be repaid within five years and are secured by the participant's account balance. Forfeitures Participants who terminate employment forfeit the non-vested portion of their account. Forfeited amounts will be restored for former participants who resume employment if they repay, within five years, the full amount of termination distribution they received. Amounts forfeited are used first to restore accounts, as above, and then to reduce Company contributions. Note 2 - Corporate Structure and Continuation of Plan On August 31, 1998, the Company merged into Schlumberger Technology Corporation ("STC"), a wholly owned subsidiary of Schlumberger Limited ("Schlumberger"). Schlumberger maintains defined contribution plans similar to the Plan and expects to merge the Plan into a Schlumberger plan before the end of 2001. Nevertheless, the Company has reserved the right to terminate the Plan at any time by resolution of the board of directors. Note 3 - Summary of Significant Accounting Policies The financial statements of the Plan are presented on the accrual basis of accounting in compliance with generally accepted accounting principles. Certain reclassifications have been made to prior year balances to conform to current year financial statement presentation. The preparation of financial statements in conformity with generally accepted accounting principles requires the Plan administrator to make estimates and assumptions that affect certain reported amounts and disclosures. Accordingly, actual results may differ from those estimates. Investments in registered investment companies (mutual funds) are valued at quoted market prices. American Express Trust Equity Index Fund I and American Express Trust Income Fund II are collective trusts stated at contract value. Units of the Camco/Schlumberger Stock Fund, invested primarily in common stock of Camco before September 1, 1998, and common stock of Schlumberger after August 31, 1998, but also in cash or cash equivalents to provide liquidity, are valued using quoted market prices for the common stock. Effective January 1, 1998, American Express changed its method of computing -6-

gains and losses on the sale of investments from the average cost method to the first-in-first-out (FIFO) method. This change in method had no effect on the accompanying financial statements. Note 4 - Investment Programs Participants may invest their account balances and all contributions made to their accounts in the investment choices described below. Investments may be made in one or more of the funds in 1% increments and choices may be changed any business day. The number of participants investing in each fund at December 31, 1998, is shown parenthetically. IDS International Fund (18 participants) A specialty growth fund for aggressive investors whose objective is long-term growth of capital that invests in common stocks of foreign companies. IDS New Dimensions Fund (66 participants) A growth fund for aggressive investors whose objective is long-term growth of capital that invests in a portfolio of company stocks in which powerful economic and/or technical changes may take place. IDS Mutual Fund (32 participants) A growth and income fund for investors with moderate tolerance for risk whose objective is balance of growth of capital and current income that invests in a portfolio of common and preferred stocks and bonds. IDS Federal Income Fund (135 participants) An income fund for conservative investors whose objective is current income and preservation of capital that invests in a portfolio of U. S. government and government agency securities. AIM Constellation Fund (5 participants) A growth fund for aggressive investors whose objective is capital appreciation primarily through investments in common stocks with emphasis on medium-sized and smaller emerging growth companies. American Express Trust Equity Index Fund I (33 participants) A growth fund for aggressive investors whose objective is to achieve a rate of return as close as possible to the return of the Standard & Poor's 500 Index that employs a passive portfolio structuring and stock selecting strategy by investing primarily in common stocks of the S&P 500 Index. -7-

American Express Trust Income Fund II (135 participants) A stable capital fund for conservative investors whose objective is to preserve principal and income while maximizing current income that invests in investment contracts and stable value contracts. Camco/Schlumberger Stock Fund (12 participants) A stock fund for aggressive investors whose objective is growth of capital and dividend income that invests in Schlumberger common stock. On August 31, 1998, Camco shares previously held by this fund were exchanged for Schlumberger shares. Participants may invest no more than 25% of their account balances and/or contributions in this fund. Note 5 - Regulatory Status of the Plan The Plan was amended and restated on April 21, 1998, to incorporate changes to the Internal Revenue Code and ERISA as a result of the Uniformed Services Employment and Reemployment Rights Act of 1994, the Small Business Job Protection Act of 1996 and the Taxpayer Relief Act of 1997. None of the changes had a material effect on the December 31, 1998 Financial Statements. The amended Plan was filed with the Internal Revenue Service (the "IRS") prior to its adoption. In a determination letter dated February 12, 1998, the IRS stated that the Plan met the requirements of Section 401(a) of the Internal Revenue Code of 1986, as amended (the "Code"), and that the trust established thereunder was entitled to exemption from federal income tax under the provisions of Section 501(a) of the Code. Company matching contributions will not be required to be included in participants' taxable income until they are distributed to the participants. The Plan administrator and the Plan's counsel believe that the Plan currently is designed and being operated in compliance with the applicable requirements of the Code. They believe, therefore, that the Plan was qualified and the related trust was tax-exempt as of the financial statement date. The Plan is also in compliance with the provisions of the ERISA. -8-

Line 27a - Schedule of Assets Held for Investment Purposes Reed Hourly Thrift Plan EIN: 13-3517570; P/N 006 December 31, 1998 (c) Description of investment (b) including maturity date, Identity of issue, rate of interest, (e) borrower, lessor, or collateral, par or (d) Current (a) similar party maturity value Cost value - --- ------------------------------ ------------------------------ -------------- -------------- Participant loans 7.0% - 12.0% interest $ - $ 536,384 Camco/Schlumberger Stock Employer common stock Fund 2,242 units 38,945 35,413 Common/collective trusts: AET Equity Index Fund I 8,615 shares 260,498 301,662 AET Income Fund II 86,614 shares 1,416,670 1,597,335 Registered investment companies: IDS International Fund 4,364 shares 52,920 50,498 IDS New Dimensions Fund 40,910 shares 1,001,051 1,180,049 IDS Mutual Fund 11,602 shares 162,287 151,108 IDS Federal Income Fund 311,464 shares 1,582,349 1,571,334 AIM Constellation Fund 3,225 shares 96,800 98,432 -------------- -------------- $ 4,611,520 $ 5,522,215 ============== ============== -9-

Line 27d - Schedule of Reportable Transactions Reed Hourly Thrift Plan EIN: 13-3517570; P/N 006 For the Year Ended December 31, 1998 (a) (c) (d) (i) Identity of (b) Purchase Selling Net gain party involved Description of asset price price or (loss) - ------------------------------- ------------------------------ --------------- --------------- --------------- Camco/Schlumberger Stock Fund Employer common stock 60 purchases, 7 sales $ 35,867 $ 8,176 $ (959) Common/collective trusts: AET Equity Index Fund I 36 purchases, 9 sales 306,262 41,269 (4,496) AET Income Fund II 70 purchases, 69 sales 531,187 579,173 80,874 Registered investment companies: IDS International Fund 57 purchases, 17 sales 64,076 36,023 884 IDS New Dimensions Fund 80 purchases, 43 sales 632,405 421,871 76,595 IDS Stock Fund 53 purchases, 31 sales 218,683 541,820 13,112 IDS Mutual Fund 64 purchases, 30 sales 138,184 111,681 6,799 IDS Federal Income Fund 116 purchases, 63 sales 728,442 577,511 1,002 AIM Constellation Fund 28 purchases, 5 sales 115,565 16,761 (2,005) --------------- --------------- --------------- $ 2,770,671 $ 2,334,285 $ 171,806 =============== =============== =============== -10-

EXHIBIT INDEX Exhibit No. Description - ------- ----------- 23 -- Consent of Larkin, Ervin & Shirley, L.L.P.

EXHIBIT 23 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in Registration Statement No. 333-81715 of Schlumberger Limited on Form S-8 of our report dated June 11, 1999, appearing in this Annual Report on Form 11-K of the Reed Hourly Thrift Plan for the year ended December 31, 1998. /s/ LARKIN, ERVIN & SHIRLEY, L.L.P. Houston, Texas June 28, 1999