<PAGE>
                                                                     EXHIBIT 4.1

      THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR
EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE
DEPOSITARY OR A NOMINEE THEREOF AND NO SUCH TRANSFER MAY BE REGISTERED, EXCEPT
IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

      EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF, TRANSFER
OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY
SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

      UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION, TO THE COMPANY OR ITS AGENT
FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS
REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT IS
MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

                         WEATHERFORD INTERNATIONAL LTD.

                           4.95% SENIOR NOTES DUE 2013

NO. 1                                                           U.S.$250,000,000
CUSIP No. 947075 AA 5

      WEATHERFORD INTERNATIONAL LTD., a company duly incorporated under the laws
of Bermuda (herein called the "Company", which term includes any successor or
resulting Person under the Indenture hereinafter referred to), for value
received, hereby promises to pay to CEDE & CO., or registered assigns, the
principal sum of TWO HUNDRED FIFTY MILLION United States Dollars on October 15,
2013, and to pay interest thereon from October 7, 2003, or from the most recent
Interest Payment Date to which interest has been paid or duly provided for,
semi-annually on April 15 and October 15 in each year, commencing April 15,
2004, at the rate of 4.95% per annum, until the principal hereof is paid or made
available for payment. The interest so payable, and punctually paid or duly
provided for, on any Interest Payment Date will, as provided in such Indenture,
be paid to the Person in whose name this Security (or one or more Predecessor
Securities) is registered at the close of business on the Regular Record Date
for such interest, which shall be April 1 or October 1 (whether or not a
Business Day), as the case may be, next preceding such Interest Payment Date.
Any such interest not so punctually paid or duly provided for will forthwith
cease to be payable to the Holder on such Regular Record Date and may either be
paid to the Person in whose name this Security (or one or more Predecessor
Securities) is registered at the close of business on a Special Record Date for
the payment of
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such Defaulted Interest to be fixed by the Trustee, notice whereof shall be
given to Holders of Securities of this series not less than 10 days prior to
such Special Record Date, or be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities of this series may be listed, and upon such notice as may be required
by such exchange, all as more fully provided in said Indenture.

      Payment of the principal of (and premium, if any) and interest on this
Security will be made by transfer of immediately available funds to a bank
account in New York, New York designated by the Holder in such coin or currency
of the United States of America as at the time of payment is legal tender for
payment of public and private debts.

      Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

      Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.
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      IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

Dated:  October 7, 2003.

                                    WEATHERFORD INTERNATIONAL LTD.


                                    By:
                                          ------------------------------------
                                          Name:
                                          Title:

      This is one of the Securities of the series designated therein referred to
in the within-mentioned Indenture.

                                    DEUTSCHE BANK TRUST COMPANY AMERICAS, as
                                     Trustee

                                    By:
                                          ------------------------------------
                                          Authorized Signatory

<PAGE>
                         WEATHERFORD INTERNATIONAL LTD.
                           4.95% SENIOR NOTES DUE 2013

      This Security is one of a duly authorized issue of senior securities of
the Company (herein called the "Securities"), issued and to be issued in one or
more series under an Indenture dated as of October 1, 2003 (herein called the
"Indenture"), among the Company, the Guarantor and Deutsche Bank Trust Company
Americas, as Trustee (herein called the "Trustee", which term includes any
successor trustee under the Indenture), to which Indenture and all indentures
supplemental thereto reference is hereby made for a statement of the respective
rights, limitations of rights, duties and immunities thereunder of the Company,
the Guarantor, the Trustee and the Holders of the Securities and of the terms
upon which the Securities are, and are to be, authenticated and delivered. As
provided in the Indenture, the Securities may be issued in one or more series,
which different series may be issued in various aggregate principal amounts, may
mature at different times, may bear interest, if any, at different rates, may be
subject to different redemption provisions, if any, may be subject to different
sinking, purchase or analogous funds, if any, may be subject to different
covenants and Events of Default and may otherwise vary as in the Indenture
provided or permitted. This Security is one of the series designated on the face
hereof.

      This Security is the general, unsecured, senior obligation of the Company
and is guaranteed pursuant to a guarantee (the "Guarantee") by Weatherford
International, Inc., a Delaware corporation (the "Guarantor"). The Guarantee is
the general, unsecured, senior obligation of the Guarantor.

      The Securities of this series are subject to redemption upon not less than
30 nor more than 60 days' notice by mail, at any time, as a whole or in part, at
the election of the Company at a Redemption Price equal to the greater of: (a)
100% of the principal amount of notes then outstanding to be redeemed, plus
accrued and unpaid interest thereon to the redemption date; or (b) the sum of
the present values of the remaining scheduled payments of principal and interest
on the notes then outstanding to be redeemed (not including any portion of such
payments of interest accrued as of the redemption date) discounted to the
redemption date on a semi-annual basis (computed based on a 360-day year
consisting of twelve 30-day months) at the Adjusted Treasury Rate, plus 20 basis
points (0.20%), as calculated by an Independent Investment Banker, plus accrued
and unpaid interest thereon to the redemption date; but interest installments
whose Stated Maturity is on or prior to such Redemption Date will be payable to
the Holders of such Securities, or one or more Predecessor Securities, of record
at the close of business on the relevant Record Dates referred to on the face
hereof, all as provided in the Indenture.

      "Adjusted Treasury Rate" means, with respect to any redemption date: (a)
the yield, under the heading which represents the average for the immediately
preceding week, appearing in the most recently published statistical release
designated "H.15(519)" or any successor publication which is published weekly by
the Board of Governors of the Federal Reserve System and which establishes
yields on actively traded United States Treasury securities adjusted to constant
maturity under the caption "Treasury Constant Maturities," for the maturity
corresponding to the Comparable Treasury Issue (if no maturity is within three
months before or after the remaining life, as defined below, yields for the two
published maturities most closely corresponding to the Comparable Treasury Issue
will be determined and the Adjusted Treasury Rate will be interpolated or
extrapolated from such yields on a straight line basis, rounding to the
<PAGE>
nearest month); or (b) if such release (or any successor release) is not
published during the week preceding the calculation date or does not contain
such yields, the rate per year equal to the semi-annual equivalent yield to
maturity of the Comparable Treasury Issue, calculated using a price for the
Comparable Treasury Issue (expressed as a percentage of its principal amount)
equal to the Comparable Treasury Price for such redemption date. The Adjusted
Treasury Rate will be calculated on the third business day preceding the
redemption date.

      "Comparable Treasury Issue" means the United States Treasury security
selected by an Independent Investment Banker as having a maturity comparable to
the remaining term of the notes to be redeemed that would be used, at the time
of selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining term
of such notes.

      "Comparable Treasury Price" means (1) the average of five Reference
Treasury Dealer Quotations for the redemption date, after excluding the highest
and lowest Reference Treasury Dealer Quotations, or (2) if an Independent
Investment Banker obtains fewer than five such Reference Treasury Dealer
Quotations, the average of all such quotations.

      "Independent Investment Banker" means Deutsche Bank Securities Inc. or
Merrill Lynch, Pierce, Fenner & Smith Incorporated or any of their respective
successors, as designated by us, or if all such firms are unwilling or unable to
serve as such, an independent investment and banking institution of national
standing appointed by us.

      "Reference Treasury Dealer" means: (a) Deutsche Bank Securities Inc. and
Merrill Lynch, Pierce, Fenner & Smith Incorporated and each of their respective
successors; provided that, if any such Reference Treasury Dealer ceases to be a
primary U.S. Government securities dealer in New York City (Primary Treasury
Dealer), we will substitute another Primary Treasury Dealer; and (b) up to one
other Primary Treasury Dealer selected by us.

      "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer and any redemption date, the average, as determined by
an Independent Investment Banker, of the bid and asked prices for the Comparable
Treasury Issue (expressed in each case as a percentage of its principal amount)
quoted in writing to an Independent Investment Banker at 5:00 p.m., New York
City time, on the third business day preceding such redemption date.

      In the event of redemption of this Security in part only, a new Security
or Securities of this series and of like tenor for the unredeemed portion hereof
will be issued in the name of the Holder hereof upon the cancellation hereof.

      If an Event of Default with respect to the Securities of this series shall
occur and be continuing, the principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture.

      The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the Guarantor and the rights of the Holders of the Securities of
each series to be affected under the Indenture at any time by the Company and
the Guarantor and the Trustee with the consent of the Holders of a
<PAGE>
majority in principal amount of the Securities at the time Outstanding of each
series to be affected. The Indenture also contains provisions permitting the
Holders of specified percentages in principal amount of the Securities of each
series at the time Outstanding, on behalf of the Holders of all Securities of
such series, to waive compliance by the Company and the Guarantor with certain
provisions of the Indenture and certain past defaults under the Indenture and
their consequences. Any such consent or waiver by the Holder of this Security
shall be conclusive and binding upon such Holder and upon all future Holders of
this Security and of any Security issued upon the registration of transfer
hereof or in exchange herefor or in lieu hereof, whether or not notation of such
consent or waiver is made upon this Security.

      No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of (and premium, if any) and
interest on this Security at the times, place(s) and rate, and in the coin or
currency, herein prescribed.

      This Global Security or portion hereof may not be exchanged for Definitive
Securities of this series except in the limited circumstances provided in the
Indenture.

      The holders of beneficial interests in this Global Security will not be
entitled to receive physical delivery of Definitive Securities except as
described in the Indenture and will not be considered the Holders thereof for
any purpose under the Indenture.

      The Securities of this series are issuable only in registered form without
coupons in denominations of U.S. $1,000 and any integral multiple thereof. As
provided in the Indenture and subject to certain limitations therein set forth,
Securities of this series are exchangeable for a like aggregate principal amount
of Securities of this series and of like tenor of a different authorized
denomination, as requested by the Holder surrendering the same.

      No service charge shall be made for any such registration of transfer or
exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

      Prior to due presentment of this Security for registration of transfer,
the Company, the Guarantor, the Trustee and any agent of the Company, the
Guarantor or the Trustee may treat the Person in whose name this Security is
registered as the owner hereof for all purposes, whether or not this Security be
overdue, and none of the Company, the Guarantor, the Trustee nor any such agent
shall be affected by notice to the contrary.

      No recourse under or upon any obligation, covenant or agreement of or
contained in the Indenture or of or contained in any Security, or the Guarantee
endorsed thereon, or for any claim based thereon or otherwise in respect
thereof, or in any Security or in the Guarantee, or because of the creation of
any indebtedness represented thereby, shall be had against any incorporator,
shareholder, member, officer, manager or director, as such, past, present or
future, of the Company or the Guarantor or of any successor Person, either
directly or through the Company or the Guarantor or any successor Person,
whether by virtue of any constitution, statute or rule of law, or by the
enforcement of any assessment, penalty or otherwise; it being expressly
understood that all such liability is hereby expressly waived and released by
the acceptance
<PAGE>
hereof and as a condition of, and as part of the consideration for, the
Securities and the execution of the Indenture.

      The Indenture provides that the Company and the Guarantor (a) will be
discharged from any and all obligations in respect of the Securities (except for
certain obligations described in the Indenture), or (b) need not comply with
certain restrictive covenants of the Indenture, in each case if the Company or
the Guarantor deposits, in trust, with the Trustee money or U.S. Government
Obligations (or a combination thereof) which through the payment of interest
thereon and principal thereof in accordance with their terms will provide money,
in an amount sufficient to pay all the principal of and interest on the
Securities, but such money need not be segregated from other funds except to the
extent required by law.

      Except as otherwise defined herein, all terms used in this Security which
are defined in the Indenture shall have the meanings assigned to them in the
Indenture.
<PAGE>
      The Guarantor (which term includes any successor Person in such capacity
under the Indenture), has fully, unconditionally and absolutely guaranteed, to
the extent set forth in the Indenture and subject to the provisions in the
Indenture, the due and punctual payment of the principal of, and premium, if
any, and interest on the Securities and all other amounts due and payable under
the Indenture and the Securities by the Company.

      The obligations of the Guarantor to the Holders of Securities and to the
Trustee pursuant to the Guarantee and the Indenture are expressly set forth in
Article Fourteen of the Indenture and reference is hereby made to the Indenture
for the precise terms of the Guarantee.

                                    WEATHERFORD INTERNATIONAL, INC.


                                    By:
                                          ------------------------------------
                                          Name:
                                          Title: