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                                                                   EXHIBIT 10.13

                     CHANGE-OF-CONTROL EMPLOYMENT AGREEMENT



     AGREEMENT by and between Smith International, Inc., a Delaware corporation
(the "Company") and RICHARD A. WERNER (the "Executive"), dated as of the 4th day
of January, 2000.

     The Board of Directors of the Company (the "Board"), has determined that it
is in the best interests of the Company and its shareholders to assure that the
Company will have the continued dedication of the Executive, notwithstanding the
possibility, threat or occurrence of a Change of Control (as defined below) of
the Company. The Board believes it is imperative to diminish the inevitable
distraction of the Executive by virtue of the personal uncertainties and risks
created by a pending or threatened Change of Control and to encourage the
Executive's full attention and dedication to the Company currently and in the
event of any threatened or pending Change of Control, and to provide the
Executive with compensation and benefits arrangements upon a Change of Control
which ensure that the compensation and benefits expectations of the Executive
will be satisfied and which are competitive with those of other corporations.
Therefore, in order to accomplish these objectives, the Board has caused the
Company to enter into this Agreement.

     NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

     1. Other Agreements. The Company and the Executive are parties to: (i) An
Employment Agreement dated as of May 1, 1991 (the "Employment Agreement"); (ii)
an Amendment to Employment Agreement dated as of May 1, 1991 (the "Amendment")
and (ii) a First Amendment to the Amendment to the Employment Agreement dated as
of November 12, 1992 (the "First Amendment"). Upon full execution and delivery
of this Agreement, the parties agree that the Amendment and the First Amendment
shall be cancelled and of no force and effect as of January 4, 2000. The terms
of the Employment Agreement, as written, without giving effect to the Amendment
or the First Amendment, shall remain in force and effect; provided that


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in the event of a Change of Control, the terms of this Agreement shall control,
except with respect to any Accrued Obligations, as defined herein.

     2. Certain Definitions. (a) The "Effective Date", shall mean the first date
during the Change of Control Period (as defined in Section 2 (b)) on which a
Change of Control (as defined in Section 2) occurs. Anything in this Agreement
to the contrary notwithstanding, if a Change of Control occurs and if the
Executive's employment with the Company is terminated prior to the date on which
the Change of Control occurs, and if it is reasonably demonstrated by the
Executive that such termination of employment (i) was at the request of a third
party who has taken steps reasonably calculated to effect a Change of Control or
(ii) otherwise arose in connection with or anticipation of a Change of Control,
then for all purposes of this Agreement the "Effective Date" shall mean the date
immediately prior to the date of such termination of employment.

     (b) The "Change of Control Period" shall mean the period commencing on the
date hereof and ending on the third anniversary of the date hereof; provided,
however, that commencing on the date one year after the date hereof, and on each
annual anniversary of such date (such date and each annual anniversary thereof
shall be hereinafter referred to as the "Renewal Date"), unless previously
terminated, the Change of Control Period shall be automatically extended so as
to terminate three years from such Renewal Date, unless at least 60 days prior
to the Renewal Date the Company shall give notice to the Executive that the
Change of Control Period shall not be so extended.

     3. Change of Control. For the purpose of this Agreement, a "Change of
Control" shall mean:

     (a) The acquisition by any individual, entity or group (within the meaning
of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act")) (a "Person") of beneficial ownership (within the
meaning of Rule 13d-3 promulgated under the Exchange Act) of 20% or more of
either (i) the then outstanding shares of common stock of the

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Company (the "Outstanding Company Common Stock") or (ii) the combined voting
power of the then outstanding voting securities of the Company entitled to vote
generally in the election of directors (the "Outstanding Company Voting
Securities"); provided, however, that for purposes of this subsection (a), the
following acquisitions shall not constitute a Change of Control: (i) any
acquisition directly from the Company, (ii) any acquisition by the Company,
(iii) any acquisition by any employee benefit plan (or related trust) sponsored
or maintained by the Company or any corporation controlled by the Company or
(iv) any acquisition by any corporation pursuant to a transaction which complies
with clauses (i), (ii) and (iii) of subsection (c) of this Section 3; or

     (b) Individuals who, as of the date hereof, constitute the Board (the
"Incumbent Board") cease for any reason to constitute at least a majority of the
Board; provided, however, that any individual becoming a director subsequent to
the date hereof whose election, or nomination for election by the Company's
shareholders, was approved by a vote of at least a majority of the directors
then comprising the Incumbent Board shall be considered as though such
individual were a member of the Incumbent Board, but excluding, for this
purpose, any such individual whose initial assumption of office occurs as a
result of an actual or threatened election contest with respect to the election
or removal of directors or other actual or threatened solicitation of proxies or
consents by or on behalf of a Person other than the Board; or

     (c) Consummation of a reorganization, merger or consolidation or sale or
other disposition of all or substantially all of the assets of the Company (a
"Business Combination"), in each case, unless, following such Business
Combination, (i) all or substantially all of the individuals and entities who
were the beneficial owners, respectively, of the Outstanding Company Common
Stock and Outstanding Company Voting Securities immediately prior to such
Business Combination beneficially own, directly or indirectly, more than 60% of,
respectively, the then outstanding shares of common stock and the combined
voting power of the then outstanding voting securities entitled to vote
generally in the election of directors, as the case may be, of the corporation
resulting from such Business Combination (including, without limitation, a
corporation which as a result of such transaction owns the Company or all or
substantially all of the Company's assets either directly or through one or more
subsidiaries) in

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substantially the same proportions as their ownership, immediately prior to such
Business Combination of the Outstanding Company Common Stock and Outstanding
Company Voting Securities, as the case may be, (ii) no Person (excluding any
corporation resulting from such Business Combination or any employee benefit
plan (or related trust) of the Company or such corporation resulting from such
Business Combination) beneficially owns, directly or indirectly, 20% or more of,
respectively, the then outstanding shares of common stock of the corporation
resulting from such Business Combination or the combined voting power of the
then outstanding voting securities of such corporation except to the extent that
such ownership existed prior to the Business Combination and (iii) at least a
majority of the members of the board of directors of the corporation resulting
from such Business Combination were members of the Incumbent Board at the time
of the execution of the initial agreement, or of the action of the Board,
providing for such Business Combination; or

     (d) Approval by the shareholders of the Company of a complete liquidation
or dissolution of the Company.

     4. Employment Period. The Company hereby agrees to continue the Executive
in its employ, and the Executive hereby agrees to remain in the employ of the
Company subject to the terms and conditions of this Agreement, for the period
commencing on the Effective Date and ending on the third anniversary of such
date (the "Employment Period").

     5. Terms of Employment. (a) Position and Duties. (i) During the Employment
Period, (A) the Executive's position (including status, offices, titles and
reporting requirements), authority, duties and responsibilities shall be at
least commensurate in all material respects with the most significant of those
held, exercised and assigned at any time during the 120-day period immediately
preceding the Effective Date and (B) the Executive's services shall be performed
at the location where the Executive was employed immediately preceding the
Effective Date or any office or location less than 35 miles from such location.



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(ii) During the Employment Period, and excluding any periods of vacation and
sick leave to which the Executive is entitled, the Executive agrees to devote
reasonable attention and time during normal business hours to the business and
affairs of the Company and, to the extent necessary to discharge the
responsibilities assigned to the Executive hereunder, to use the Executive's
reasonable best efforts to perform faithfully and efficiently such
responsibilities. During the Employment Period it shall not be a violation of
this Agreement for the Executive to (A) serve on corporate, civic or charitable
boards or committees, (B) deliver lectures, fulfill speaking engagements or
teach at educational institutions and (C) manage personal investments, so long
as such activities do not significantly interfere with the performance of the
Executive's responsibilities as an employee of the Company in accordance with
this Agreement. It is expressly understood and agreed that to the extent that
any such activities have been conducted by the Executive prior to the Effective
Date, the continued conduct of such activities (or the conduct of activities
similar in nature and scope thereto) subsequent to the Effective Date shall not
thereafter be deemed to interfere with the performance of the Executive's
responsibilities to the Company.

     (b) Compensation. (i) Base Salary. During the Employment Period, the
Executive shall receive an annual base salary ("Annual Base Salary"), which
shall be paid at a monthly rate, at least equal to twelve times the highest
monthly base salary paid or payable, including any base salary which has been
earned but deferred, to the Executive by the Company and its affiliated
companies in respect of the twelve-month period immediately preceding the month
in which the Effective Date occurs. During the Employment Period, the Annual
Base Salary shall be reviewed no more than 12 months after the last salary
increase awarded to the Executive prior to the Effective Date and thereafter at
least annually. Any increase in Annual Base Salary shall not serve to limit or
reduce any other obligation to the Executive under this Agreement. Annual Base
Salary shall not be reduced after any such increase and the term Annual Base
Salary as utilized in this Agreement shall refer to Annual Base Salary as so
increased. As used in this Agreement, the term "affiliated companies" shall
include any company controlled by, controlling or under common control with the
Company.

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(ii) Annual Bonus. In addition to Annual Base Salary, the Executive shall be
awarded, for each fiscal year ending during the Employment Period, an annual
bonus (the "Annual Bonus") in cash (i) under the Company's Annual Incentive Plan
based upon meeting the targets in the Annual Incentive Plan, provided that the
Executive's target bonus percentage shall be at least equal to the Executive's
target bonus percentage for the fiscal year prior to the Effective Date or equal
to an increase in the target bonus percentage given to any similarly situated
executive after the Effective Date, or, if higher, (ii) under any annual
incentive plan or discretionary award by the Company to similarly situated
executives which is enacted or approved after the Effective Date. Each such
Annual Bonus shall be paid no later than the end of the third month of the
fiscal year next following the fiscal year for which the Annual Bonus is
awarded, unless the Executive shall elect to defer the receipt of such Annual
Bonus.

(iii) Incentive, Savings and Retirement Plans. During the Employment Period, the
Executive shall be entitled to participate in all incentive, savings and
retirement plans, practices, policies and programs applicable generally to other
peer executives of the Company and its affiliated companies, but in no event
shall such plans, practices, policies and programs provide the Executive with
incentive opportunities (measured with respect to both regular and special
incentive opportunities, to the extent, it any, that such distinction is
applicable), savings opportunities and retirement benefit opportunities, in each
case, less favorable, in the aggregate, than the most favorable of those
provided by the Company and its affiliated companies for the Executive under
such plans, practices, policies and programs as in effect at any time during the
120-day period immediately preceding the Effective Date or if more favorable to
the Executive, those provided generally at any time after the Effective Date to
other peer executives of the Company and its affiliated companies.

(iv) Welfare Benefit Plans. During the Employment Period, the Executive and/or
the Executive's-family, as the case may be, shall be eligible for participation
in and shall receive all benefits under welfare benefit plans, practices,
policies and programs provided by the Company and its affiliated companies
(including, without limitation, medical, prescription, dental, disability,
employee life, group life, accidental death and travel accident insurance plans
and



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programs) to the extent applicable generally to other peer executives of the
Company and its affiliated companies, but in no event shall such plans,
practices, policies and programs provide the Executive with benefits which are
less favorable, in the aggregate, than the most favorable of such plans,
practices, policies and programs in effect for the Executive at any time during
the 120-day period immediately preceding the Effective Date or, if more
favorable to the Executive, those provided generally at any time after the
Effective Date to other peer executives of the Company and its affiliated
companies.

(v) Expenses. During the Employment Period, the Executive shall be entitled to
receive prompt reimbursement for all reasonable expenses incurred by the
Executive in accordance with the most favorable policies, practices and
procedures of the Company and its affiliated companies in effect for the
Executive at any time during the 120-day period immediately preceding the
Effective Date or, if more favorable to the Executive, as in effect generally at
any time thereafter with respect to other peer executives of the Company and its
affiliated companies.

(vi) Fringe Benefits. During the Employment Period, the Executive shall be
entitled to fringe benefits, including, without limitation, tax and financial
planning services, payment of club dues, and, if applicable, use of an
automobile and payment of related expenses, in accordance with the most
favorable plans, practices, programs and policies of the Company and its
affiliated companies in effect for the Executive at any time during the 120-day
period immediately preceding the Effective Date or, if more favorable to the
Executive, as in effect generally at any time thereafter with respect to other
peer executives of the Company and its affiliated companies.

(vii) Office and Support Staff. During the Employment Period, the Executive
shall be entitled to an office or offices of a size and with furnishings and
other appointments, and to exclusive personal secretarial and other assistance,
at least equal to the most favorable of the foregoing provided to the Executive
by the Company and its affiliated companies at any time during the 120-day
period immediately preceding the Effective Date or, if more favorable to the


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Executive, as provided generally at any time thereafter with respect to other
peer executives of the Company and its affiliated companies.

(viii) Vacation. During the Employment Period, the Executive shall be entitled
to paid vacation in accordance with the most favorable plans, policies, programs
and practices of the Company and its affiliated companies as in effect for the
Executive at any time during the 120-day period immediately preceding the
Effective Date or, if more favorable to the Executive, as in effect generally at
any time thereafter with respect to other peer executives of the Company and its
affiliated companies.

     6. Termination of Employment. (a) Death or Disability. The Executive's
employment shall terminate automatically upon the Executive's death during the
Employment Period. If the Company determines in good faith that the Disability
of the Executive has occurred during the Employment Period (pursuant to the
definition of Disability set forth below), it may give to the Executive written
notice in accordance with Section 13(b) of this Agreement of its intention to
terminate the Executive's employment. In such event, the Executive's employment
with the Company shall terminate effective on the 30th day after receipt of such
notice by the Executive (the "Disability Effective Date"), provided that, within
the 30 days after such receipt, the Executive shall not have returned to
full-time performance of the Executive's duties. For purposes of this Agreement,
"Disability" shall mean the absence of the Executive from the Executive's duties
with the Company on a full-time basis for 180 consecutive business days as a
result of incapacity due to mental or physical illness which is determined to be
total and permanent by a physician selected by the Company or its insurers and
acceptable to the Executive or the Executive's legal representative.

     (b) Cause. The Company may terminate the Executive's employment during the
Employment Period for Cause. For purposes of this Agreement, "Cause" shall:

     (i) the willful and continued failure of the Executive to perform
     substantially the Executive's duties with the Company or one of its
     affiliates (other than any such failure


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     resulting from incapacity due to physical or mental illness), after a
     written demand for substantial performance is delivered to the Executive by
     the Board or the Chief Executive Officer of the Company which specifically
     identifies the manner in which the Board or Chief Executive Officer
     believes that the Executive has not substantially performed the Executive's
     duties, or

     (ii) the willful engaging by the Executive in illegal conduct or gross
     misconduct which is materially and demonstrably injurious to the Company.

     For purposes of this provision, no act or failure to act, on the part of
the Executive, shall be considered "willful" unless it is done, or omitted to be
done, by the Executive in bad faith or without reasonable belief that the
Executive's action or omission was in the best interests of the Company. Any
act, or failure to act, based upon authority given pursuant to a resolution duly
adopted by the Board or upon the instructions of the Chief Executive Officer or
a senior officer of the Company or based upon the advice of counsel for the
Company shall be conclusively presumed to be done, or omitted to be done, by the
Executive in good faith and in the best interests of the Company. The cessation
of employment of the Executive shall not be deemed to be for Cause unless and
until there shall have been delivered to the Executive a copy of a resolution
duly adopted by the affirmative vote of not less than three-quarters of the
entire membership of the Board at a meeting of the Board called and held for
such purpose (after reasonable notice is provided to the Executive and the
Executive is given an opportunity, together with counsel, to be heard before the
Board), finding that, in the good faith opinion of the Board, the Executive is
guilty of the conduct described in subparagraph (i) or (ii) above, and
specifying the particulars thereof in detail.

     (c) Good Reason. The Executive's employment may be terminated by the
Executive for Good Reason. For purposes of this Agreement, "Good Reason" shall
mean:

     (i) the assignment to the Executive of any duties inconsistent in any
     respect with the Executive's position (including status, offices, titles
     and reporting requirements),



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     authority, duties or responsibilities as contemplated by Section 4(a) of
     this Agreement, or any other action by the Company which results in a
     diminution in such position, authority, duties or responsibilities,
     excluding for this purpose an isolated, insubstantial and inadvertent
     action not taken in bad faith and which is remedied by the Company promptly
     after receipt of notice thereof given by the Executive;

     (ii) any failure by the Company to comply with any of the provisions of
     Section 4(b) of this Agreement, other than an isolated, insubstantial and
     inadvertent failure not occurring in bad faith and which is remedied by the
     Company promptly after receipt of notice thereof given by the Executive;

     (iii) the Company's requiring the Executive to be based at any office or
     location other than as provided in Section 5(a)(i)(B) hereof or the
     Company's requiring the Executive to travel on Company business to a
     substantially greater extent than required immediately prior to the
     Effective Date;

     (iv) any purported termination by the Company of the Executive's employment
     otherwise than as expressly permitted by this Agreement; or

     (v) any failure by the Company to comply with and satisfy Section 12(c) of
     this Agreement.

     For purposes of this Section 6(c), any good faith determination of "Good
Reason" made by the Executive shall be conclusive. Anything in this Agreement to
the contrary notwithstanding, a termination by the Executive for any reason
during the 30-day period immediately following the first anniversary of the
Effective Date shall be deemed to be a termination for Good Reason for all
purposes of this Agreement.

     (d) Notice of Termination. Any termination by the Company for Cause, or by
the Executive for Good Reason, shall be communicated by Notice of Termination to
the other party


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hereto given in accordance with Section 13(b) of this Agreement. For purposes of
this Agreement, a "Notice of Termination" means a written notice which indicates
the specific termination provision in this Agreement relied upon, (ii) to the
extent applicable, sets forth in reasonable detail the facts and circumstances
claimed to provide a basis for termination of the Executive's employment under
the provision so indicated and (iii) if the Date of Termination (as defined
below) is other than the date of receipt of such notice, specifies the
termination date (which date shall be not more than thirty days after the giving
of such notice). The failure by the Executive or the Company to set forth in the
Notice of Termination any fact or circumstance which contributes to a showing of
Good Reason or Cause shall not waive any right of the Executive or the Company,
respectively, hereunder or preclude the Executive or the Company, respectively,
from asserting such fact or circumstance in enforcing the Executive's or the
Company's rights hereunder.

     (e) Date of Termination. "Date of Termination" means (i) if the Executive's
employment is terminated by the Company for Cause, or by the Executive for Good
Reason, the date of receipt of the Notice of Termination or any later date
specified therein, as the case may be, (ii) if the Executive's employment is
terminated by the Company other than for Cause or Disability, the Date of
Termination shall be the date on which the Company notifies the Executive of
such termination and (iii) if the Executive's employment is terminated by reason
of death or Disability, the Date of Termination shall be the date of death of
the Executive or the Disability Effective Date, as the case may be.

     7. Obligations of the Company upon Termination. (a) Good Reason; Other Than
for Cause, Death or Disability. If, during the Employment Period, the Company
shall terminate the Executive's employment other than for Cause or Disability or
the Executive shall terminate employment for Good Reason:

     (i) the Company shall pay to the Executive in a lump sum in cash within 30
     days after the Date of Termination the aggregate of the following amounts:

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          A. the sum of (1) the Executive's Annual Base Salary through the Date
     of Termination to the extent not theretofore paid, (2) the product of (x)
     the higher of (I) the highest Annual Bonus paid to the Executive for the
     last three full fiscal years prior to the Effective Date and (II) the
     Annual Bonus paid or payable, including any bonus or portion thereof which
     has been earned but deferred (and annualized for any fiscal year consisting
     of less than twelve full months or during which the Executive was employed
     for less than twelve full months), for the most recently completed fiscal
     year during the Employment Period, if any (such higher amount being
     referred to as the "Highest Annual Bonus") and (y) a fraction, the
     numerator of which is the number of days in the current fiscal year through
     the Date of Termination, and the denominator of which is 365 and (3) any
     compensation previously deferred by the Executive (together with any
     accrued interest or earnings thereon) and any accrued vacation pay, in each
     case to the extent not theretofore paid (the sum of the amounts described
     in clauses (1), (2), and (3) and any amounts accrued under the Employment
     Agreement with the Executive not otherwise fully accrued under the terms of
     this Agreement shall be hereinafter referred to as the "Accrued
     Obligations"); and

          B. the amount equal to the product of (1) three and (2) the sum of (x)
     the Executive's Annual Base Salary and (y) the Highest Annual Bonus; and

          C. an amount equal to the excess of (a) the actuarial equivalent of
     the benefit under any excess or supplemental retirement plan in which the
     Executive participates (the "SERP") which the Executive would receive if
     the Executive's employment continued for three years after the Date of
     Termination assuming for this purpose that all accrued benefits are fully
     vested, and, assuming that the Executive's compensation in each of the
     three years is that required by Section 5(b)(i) and Section 5(b)(ii), over
     (b) the actuarial equivalent of the Executive's actual benefit (paid or
     payable), if any, under the SERP as of the Date of Termination;

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          (ii) for three years after the Executive's Date of Termination, or
          such longer period as may be provided by the terms of the appropriate
          plan, program, practice or policy, the Company shall continue benefits
          to the Executive and/or the Executive's family at least equal to those
          which would have been provided to them in accordance with the plans,
          programs, practices and policies described in Section 5(b)(iv) of this
          Agreement if the Executive's employment had not been terminated or, if
          more favorable to the Executive, as in effect generally at any time
          thereafter with respect to other peer executives of the Company and
          its affiliated companies and their families, provided, however, that
          if the Executive becomes reemployed with another employer and is
          eligible to receive medical or other welfare benefits under another
          employer provided plan, the medical and other welfare benefits
          described herein shall be secondary to those provided under such other
          plan during such applicable period of eligibility. For purposes of
          determining eligibility (but not the time of commencement of benefits)
          of the Executive for retiree benefits pursuant to such plans,
          practices, programs and policies, the Executive shall be considered to
          have remained employed until three years after the Date of Termination
          and to have retired on the last day of such period;

          (iii) the Company shall, at its sole expense as incurred, provide the
          Executive with outplacement services the scope and provider of which
          shall be selected by the Executive in his sole discretion; and

          (iv) to the extent not theretofore paid or provided, the Company shall
          timely pay or provide to the Executive any other amounts or benefits
          required to be paid or provided or which the Executive is eligible to
          receive under any plan, program, policy or practice or contract or
          agreement of the Company and its affiliated companies (such other
          amounts and benefits shall be hereinafter referred to as the "Other
          Benefits").

     (b) Death. If the Executive's employment is terminated by reason of the
Executive's death during the Employment Period, this Agreement shall terminate
without further obligations to the Executive's legal representatives under this
Agreement, other than for payment of Accrued Obligations and the timely payment
or provision of Other Benefits. Accrued

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Obligations shall be paid to the Executive's estate or beneficiary, as
applicable, in a lump sum in cash within 30 days of the Date of Termination.
With respect to the provision of Other Benefits, the term Other Benefits as
utilized in this Section 7(b) shall include, without limitation, and the
Executive's estate and/or beneficiaries shall be entitled to receive, benefits
at least equal to the most favorable benefits provided by the Company and
affiliated companies to the estates and beneficiaries of peer executives of the
Company and such affiliated companies under such plans, programs, practices and
policies relating to death benefits, if any, as in effect with respect to other
peer executives and their beneficiaries at any time during the 120-day period
immediately preceding the Effective Date or, if more-favorable to the
Executive's estate and/or the Executive's beneficiaries, as in effect on the
date of the Executive's death with respect to other peer executives of the
Company and its affiliated companies and their beneficiaries.

     (c) Disability. If the Executive's employment is terminated by reason of
the Executive's Disability during the Employment Period, this Agreement shall
terminate without further obligations to the Executive, other than for payment
of Accrued Obligations and the timely payment or provision of Other Benefits.
Accrued Obligations shall be paid to the Executive in a lump sum in cash within
30 days of the Date of Termination. With respect to the provision of Other
Benefits, the term Other Benefits as utilized in this Section 7(c) shall
include, and the Executive shall be entitled after the Disability Effective Date
to receive, disability and other benefits at least equal to the most favorable
of those generally provided by the Company and its affiliated companies to
disabled executives and/or their families in accordance with such plans,
programs, practices and policies relating to disability, if any, as in effect
generally with respect to other peer executives and their families at any time
during the 120-day period immediately preceding the Effective Date or, if more
favorable to the Executive and/or the Executive's family, as in effect at any
time thereafter generally with respect to other peer executives of the Company
and its affiliated companies and their families.

     (d) Cause; Other than for Good Reason. If the Executive's employment shall
be terminated for Cause during the Employment Period, this Agreement shall
terminate without



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further obligations to the Executive other than the obligation to pay to the
Executive (x) his Annual Base Salary through the Date of Termination, (y) the
amount of any compensation previously deferred by the Executive, and (z) Other
Benefits, in each case to the extent theretofore unpaid. If the Executive
voluntarily terminates employment during the Employment Period, excluding a
termination for Good Reason, this Agreement shall terminate without further
obligations to the Executive, other than for Accrued Obligations and the timely
payment or provision of Other Benefits. In such case, all Accrued Obligations
shall be paid to the Executive in a lump sum in cash within 30 days of the Date
of Termination.

     8. Non-exclusivity of Rights. Nothing in this Agreement shall prevent or
limit the Executive's continuing or future participation in any plan, program,
policy or practice provided by the Company or any of its affiliated companies
and for which the Executive may qualify, nor, subject to Section 13(f), shall
anything herein limit or otherwise affect such rights as the Executive may have
under any contract or agreement with the Company or any of its affiliated
companies. Amounts which are vested benefits or which the Executive is otherwise
entitled to receive under any plan, policy, practice or program of or any
contract or agreement with the Company or any of its affiliated companies at or
subsequent to the Date of Termination shall be payable in accordance with such
plan, policy, practice or program or contract or agreement except as explicitly
modified by this Agreement.

     9. Full Settlement. The Company's obligation to make the payments provided
for in this Agreement and otherwise to perform its obligations hereunder shall
not be affected by any setoff, counterclaim, recoupment, defense or other claim,
right or action which the Company may have against the Executive or others. In
no event shall the Executive be obligated to seek other employment or take any
other action by way of mitigation of the amounts payable to the Executive under
any of the provisions of this Agreement and such amounts shall not be reduced
whether or not the Executive obtains other employment. The Company agrees to pay
as incurred, to the full extent permitted by law, all legal fees and expenses
which the Executive may reasonably incur as a result of any contest (regardless
of the outcome thereof) by the Company, the Executive or others of the validity
or enforceability of, or liability under, any provision of this



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Agreement or any guarantee of performance thereof (including as a result of any
contest by the Executive about the amount of any payment pursuant to this
Agreement), plus in each case interest on any delayed payment at the applicable
Federal rate provided for in Section 7872(f)(2)(A) of the Internal Revenue Code
of 1986, as amended (the "Code").

     10. Certain Additional Payments by the Company.


     (a) Anything in this Agreement to the contrary notwithstanding and except
as set forth below, in the event it shall be determined that any payment or
distribution by the Company or its affiliates to or for the benefit of the
Executive (whether paid or payable or distributed or distributable pursuant to
the terms of this Agreement or otherwise, but determined without regard to any
additional payments required under this Section 10) (a "Payment") would be
subject to excise or other similar tax, or federal income tax above the rate
ordinarily applicable to wages and salaries paid in the ordinary course of
business, whether as a result of the provisions of Sections 280G and 4999 of the
Code, any similar or analogous provisions of any statute or regulation adopted
subsequent to the date hereof, or otherwise, or any interest or penalties are
incurred by the Executive with respect to such tax (such excise tax, other
similar tax or federal income tax, together with any such interest and
penalties, are hereinafter collectively referred to as the "Excise Tax"), then
the Executive shall be entitled to receive an additional payment (a "Gross-Up
Payment") in an amount such that after payment by the Executive of all taxes
(including any interest or penalties imposed with respect to such taxes),
including, without limitation, any income taxes (and any interest and penalties
imposed with respect thereto) and Excise Tax imposed upon the Gross-Up Payment,
the Executive retains an amount of the Gross-Up Payment equal to the Excise Tax
imposed upon the Payments. Notwithstanding the foregoing provisions of this
Section 10(a), if it shall be determined that the Executive is entitled to a
Gross-Up Payment, but that the Payments do not exceed 110% of the greatest
amount (the "Reduced Amount") that could be paid to the Executive such that the
receipt of Payments would not give rise to any Excise Tax, then no Gross-Up
Payment shall be made to the Executive and the Payments, in the aggregate, shall
be reduced to the Reduced Amount.

                                       16
<PAGE>   17

     (b) Subject to the provisions of Section 10(c), all determinations required
to be made under this Section 9, including whether and when a Gross-Up Payment
is required and the amount of such Gross-Up Payment and the assumptions to be
utilized in arriving at such determination, shall be made by Arthur Andersen
L.L.P. or such other certified public accounting firm as may be designated by
the Executive (the "Accounting Firm") which shall provide detailed supporting
calculations both to the Company and the Executive within 15 business days of
the receipt of notice from the Executive that there has been a Payment, or such
earlier time as is requested by the Company. In the event that the Accounting
Firm is serving as accountant or auditor for the individual, entity or group
effecting the Change of Control, the Executive shall appoint another nationally
recognized accounting firm to make the determinations required hereunder (which
accounting firm shall then be referred to as the Accounting Firm hereunder). All
fees and expenses of the Accounting Firm shall be borne solely by the Company.
Any Gross-Up Payment, as determined pursuant to this Section 10, shall be paid
by the Company to the Executive within five days of the receipt of the
Accounting Firm's determination. Any determination by the Accounting Firm shall
be binding upon the Company and the Executive. As a result of the uncertainty in
the application of Section 4999 of the Code at the time of the initial
determination by the Accounting Firm hereunder, it is possible that Gross-Up
Payments which will not have been made by the Company should have been made
("Underpayment"), consistent with the calculations required to be made
hereunder. In the event that the Company exhausts its remedies pursuant to
Section 10(c) and the Executive thereafter is required to make a payment of any
Excise Tax, the Accounting Firm shall determine the amount of the Underpayment
that has occurred and any such Underpayment shall be promptly paid by the
Company to or for the benefit of the Executive.

     (c) The Executive shall notify the Company in writing of any claim by the
Internal Revenue Service that, if successful, would require the payment by the
Company of the Gross-Up Payment. Such notification shall be given as soon as
practicable but no later than ten business days after the Executive is informed
in writing of such claim and shall apprise the Company of the nature of such
claim and the date on which such claim is requested to be paid. The Executive
shall not pay such claim prior to the expiration of the 30-day period following
the date on which



                                       17
<PAGE>   18

it gives such notice to the Company (or such shorter period ending on the date
that any payment of taxes with respect to such claim is due). If the Company
notifies the Executive in writing prior to the expiration of such period that it
desires to contest such claim, the Executive shall:

     (i) give the Company any information reasonably requested by the Company
     relating to such claim,

     (ii) take such action in connection with contesting such claim as the
     Company shall reasonably request in writing from time to time, including,
     without limitation, accepting legal representation with respect to such
     claim by an. attorney reasonably selected by the Company,

     (iii) cooperate with the Company in good faith in order effectively to
     contest such claim, and

     (iv) permit the Company to participate in any proceedings relating to such
     claim;

provided, however, that the Company shall bear and pay directly all costs and
expenses (including additional interest and penalties) incurred in connection
with such contest and shall indemnify and hold the Executive harmless, on an
after-tax basis, for any Excise Tax or income tax (including interest and
penalties with respect thereto) imposed as a result of such representation and
payment of costs and expenses. Without limitation on the foregoing provisions of
this Section 10(c), the Company shall control all proceedings taken in
connection with such contest and, at its sole option, may pursue or forgo any
and all administrative appeals, proceedings, hearings and conferences with the
taxing authority in respect of such claim and may, at its sole option, either
direct the Executive to pay the tax claimed and sue for a refund or contest the
claim in any permissible manner, and the Executive agrees to prosecute such
contest to a determination before any administrative tribunal, in a court of
initial jurisdiction and in one or more appellate courts, as the Company shall
determine; provided, however, that if the Company directs the Executive to pay
such claim and sue for a refund, the Company shall


                                       18
<PAGE>   19

advance the amount of such payment to the Executive, on an interest-free basis
and shall indemnify and hold the Executive harmless, on an after-tax basis, from
any Excise Tax or income tax (including interest or penalties with respect
thereto) imposed with respect to such advance or with respect to any imputed
income with respect to such advance; and further provided that any extension of
the statute of limitations relating to payment of taxes for the taxable year of
the Executive with respect to which such contested amount is claimed to be due
is limited solely to such contested amount. Furthermore, the Company's control
of the contest shall be limited to issues with respect to which a Gross-Up
Payment would be payable hereunder and the Executive shall be entitled to settle
or contest, as the case may be, any other issue raised by the Internal Revenue
Service or any other taxing authority.

     (d) If, after the receipt by the Executive of an amount advanced by the
Company pursuant to Section 10(c), the Executive becomes entitled to receive any
refund with respect to such claim, the Executive shall (subject to the Company's
complying with the requirements of Section 10(c)) promptly pay to the Company
the amount of such refund (together with any interest paid or credited thereon
after taxes applicable thereto). If, after the receipt by the Executive of an
amount advanced by the Company pursuant to Section 10(c), a determination is
made that the Executive shall not be entitled to any refund with respect to such
claim and the Company does not notify the Executive in writing of its intent to
contest such denial of refund prior to the expiration of 30 days after such
determination, then such advance shall be forgiven and shall not be required to
be repaid and the amount of such advance shall offset, to the extent thereof,
the amount of Gross-Up Payment required to be paid.

     11. Confidential Information. The Executive shall hold in a fiduciary
capacity for the benefit of the Company all secret or confidential information,
knowledge or data relating to the Company or any of its affiliated companies,
and their respective businesses, which shall have been obtained by the Executive
during the Executive's employment by the Company or any of its affiliated
companies and which shall not be or become public knowledge (other than by acts
by the Executive or representatives of the Executive in violation of this
Agreement). After termination of the Executive's employment with the Company,
the Executive shall not, without the prior


                                       19
<PAGE>   20

written consent of the Company or as may otherwise be required by law or legal
process, communicate or divulge any such information, knowledge or data to
anyone other than the Company and those designated by it. In no event shall an
asserted violation of the provisions of this Section 10 constitute a basis for
deferring or withholding any amounts otherwise payable to the Executive under
this Agreement.

     12. Successors. (a) This Agreement is personal to the Executive and without
the prior written consent of the Company shall not be assignable by the
Executive otherwise than by will or the laws of descent and distribution. This
Agreement shall inure to the benefit of and be enforceable by the Executive's
legal representatives.

     (b) This Agreement shall inure to the benefit of and be binding upon the
Company and its successors and assigns.

     (c) The Company will require any successor (whether direct or indirect, by
purchase, merger, consolidation or otherwise) to all or substantially all of the
business and/or assets of the Company to assume expressly and agree to perform
this Agreement in the same manner and to the same extent that the Company would
be required to perform it if no such succession had taken place. As used in this
Agreement, "Company" shall mean the Company as hereinbefore defined and any
successor to its business and/or assets as aforesaid which assumes and agrees to
perform this Agreement by operation of law, or otherwise.

     13. Miscellaneous. (a) This Agreement shall be governed by and construed in
accordance with the laws of the State of Texas, without reference to principles
of conflict of laws. The captions of this Agreement are not part of the
provisions hereof and shall have no force or effect. This Agreement may not be
amended or modified otherwise than by a written agreement executed by the
parties hereto or their respective successors and legal representatives.

                                       20
<PAGE>   21

     (b) All notices and other communications hereunder shall be in writing and
shall be given by hand delivery to the other party or by registered or certified
mail, return receipt requested, postage prepaid, addressed as follows:

<TABLE>

<S>      <C>      <C>
         If to the Executive:
                  Richard A. Werner

         If to the Company:

                  Smith International, Inc.
                  16740 Hardy Street
                  Houston, TX 77032
                  Fax:  (281) 233-5996
                  Attention:  General Counsel
</TABLE>

or to such other address as either party shall have furnished to the other in
writing in accordance herewith. Notice and communications shall be effective
when actually received by the addressee.

     (c) The invalidity or unenforceability of any provision of this Agreement
shall not affect the validity or enforceability of any other provision of this
Agreement.

     (d) The Company may withhold from any amounts payable under this Agreement
such Federal, state, local or foreign taxes as shall be required to be withheld
pursuant to any applicable law or regulation.

     (e) The Executive's or the Company's failure to insist upon strict
compliance with any provision of this Agreement or the failure to assert any
right the Executive or the Company may have hereunder, including, without
limitation, the right of the Executive to terminate employment for Good Reason
pursuant to Section 5(c)(i)-(v) of this Agreement, shall not be deemed to be a
waiver of such provision or right or any other provision or right of this
Agreement.

                                       21
<PAGE>   22

     (f) The Executive and the Company acknowledge that, except as may otherwise
be provided under any other written agreement between the Executive and the
Company, the employment of the Executive by the Company is "at will" and,
subject to Section l (a) hereof, prior to the Effective Date, the Executive's
employment and/or this Agreement may be terminated by either the Executive or
the Company at any time prior to the Effective Date, in which case the Executive
shall have no further rights under this Agreement ; provided, that this
Agreement may not be terminated by the Company if it is reasonably demonstrated
by the Executive that such termination (i) was at the request of a third party
who has taken steps reasonably calculated to effect a Change of Control or (ii)
otherwise arose in connection with or anticipation of a Change of Control. From
and after the Effective Date this Agreement shall supersede any other agreement
between the parties with respect to the subject matter hereof.

     IN WITNESS WHEREOF, the Executive has hereunto set the Executive's hand
and, pursuant to the authorization from its Board of Directors, the Company has
caused these presents to be executed in its name on its behalf, all as of the
day and year first above written.




                                   /s/  RICHARD A. WERNER
                                   --------------------------------------------
                                   RICHARD A. WERNER

                                   SMITH INTERNATIONAL, INC.


                                   By: /s/ DOUG ROCK
                                      -----------------------------------------
                                       Doug Rock



                                       22