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                                                                     EXHIBIT 4.1

                          CERTIFICATE OF INCORPORATION
                                       OF
                             PETROQUEST ENERGY, INC.

         The undersigned, a natural person acting as incorporator of a
corporation under the General Corporation Law of the State of Delaware, as the
same exists or may hereafter from time to time be amended (the "DGCL"), hereby
makes this Certificate of Incorporation for such corporation.


                                    ARTICLE I

                                      NAME

         The name of the corporation is PetroQuest Energy, Inc. (the
"Corporation").


                                   ARTICLE II

                           REGISTERED OFFICE AND AGENT

         The address of its registered office in the State of Delaware is The
Corporation Trust Center, 1209 Orange Street, Wilmington, Delaware 19801, New
Castle County. The name of its registered agent at such address is The
Corporation Trust Company.


                                   ARTICLE III

                                    PURPOSES

         The nature of the business or purposes to be conducted or promoted is
to engage in any lawful act or activity for which corporations may be organized
under the DGCL.


                                   ARTICLE IV

                            AUTHORIZED CAPITAL STOCK

         The aggregate number of shares of all classes of stock which the
Corporation shall have authority to issue is 80,000,000 shares, consisting of:
(i) 75,000,000 shares of common stock, par value $.001 per share (the "Common
Stock"), and (ii) 5,000,000 shares of preferred stock, par value $.001 per share
(the "Preferred Stock"). Shares of any class of capital stock of the Corporation
may be issued for such consideration and for such corporate purposes as the
Board of Directors of the Corporation (the "Board of Directors") may from time
to time determine. Each share of Common Stock shall be entitled to one vote.


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         A. Preferred Stock. The Preferred Stock may be divided into and issued
from time to time in one or more series as may be fixed and determined by the
Board of Directors. The relative rights and preferences of the Preferred Stock
of each series shall be such as shall be stated in any resolution or resolutions
adopted by the Board of Directors setting forth the designation of the series
and fixing and determining the relative rights and preferences thereof (a
"Directors' Resolution"). The Board of Directors is hereby authorized to fix and
determine the powers, designations, preferences, and relative, participating,
optional or other rights, including, without limitation, voting powers, full or
limited, preferential rights to receive dividends or assets upon liquidation,
rights of conversion or exchange into Common Stock, Preferred Stock of any
series or other securities, any right of the Corporation to exchange or convert
shares into Common Stock, Preferred Stock of any series or other securities, or
redemption provision or sinking fund provisions, as between series and as
between the Preferred Stock or any series thereof and the Common Stock, and the
qualifications, limitations or restrictions thereof, if any, all as shall be
stated in a Directors' Resolution, and the shares of Preferred Stock or any
series thereof may have full or limited voting powers, or be without voting
powers, all as shall be stated in a Directors' Resolution. Except where
otherwise set forth in the Directors' Resolution providing for the issuance of
any series of Preferred Stock, the number of shares comprising such series may
be increased or decreased (but not below the number of shares then outstanding)
from time to time by like action of the Board of Directors. The shares of
Preferred Stock of any one series shall be identical with the other shares in
the same series in all respects except as to the dates from and after which
dividends thereon shall cumulate, if cumulative.

         B. Reacquired Shares of Preferred Stock. Shares of any series of any
Preferred Stock that have been redeemed (whether through the operation of a
sinking fund or otherwise), purchased by the Corporation, or which, if
convertible or exchangeable, have been converted into, or exchanged for, shares
of stock of any other class or classes or any evidences of indebtedness shall
have the status of authorized and unissued shares of Preferred Stock and may be
reissued as a part of the series of which they were originally a part or may be
reclassified and reissued as part of a new series of Preferred Stock or as part
of any other series of Preferred Stock, all subject to the conditions or
restrictions on issuance set forth in the Directors' Resolution providing for
the issuance of any series of Preferred Stock and to any filing required by law.

         C. Increase in Authorized Preferred Stock. The number of authorized
shares of Preferred Stock may be increased or decreased by the affirmative vote
of the holders of a majority of the stock of the Corporation entitled to vote
without the separate vote of holders of Preferred Stock as a class.

                                    ARTICLE V

                                    EXISTENCE

         The existence of the Corporation is to be perpetual.




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                                   ARTICLE VI

                              NO PREEMPTIVE RIGHTS

         No stockholder shall be entitled, as a matter of right, to subscribe
for or acquire additional, unissued or treasury shares of any class of capital
stock of the Corporation whether now or hereafter authorized, or any bonds,
debentures or other securities convertible into, or carrying a right to
subscribe to or acquire such shares, but any shares or other securities
convertible into, or carrying a right to subscribe to or acquire such shares may
be issued or disposed of by the Board of Directors to such persons and on such
terms as in its discretion it shall deem advisable.


                                   ARTICLE VII

                              NO CUMULATIVE VOTING

         At each election of directors, every stockholder entitled to vote at
such election shall have the right to vote in person or by proxy the number of
shares owned by him for as many persons as there are directors to be elected and
for whose election he has a right to vote. No stockholder shall have the right
to cumulate his votes in any election of directors.


                                  ARTICLE VIII

                     NO STOCKHOLDER ACTION WITHOUT A MEETING

         Except as otherwise required by law, any action required or permitted
to be taken by the stockholders of the Corporation must be effected at an annual
or special meeting of stockholders of the Corporation and may not be effected by
any consent in writing by such stockholders. A special meeting of stockholders
of the Corporation may be called only by the Chairman of the Board, the Chief
Executive Officer, the President or the Board of Directors by the written order
of a majority of the entire Board of Directors, and not by the stockholders
except as otherwise provided by law or the Bylaws of the Corporation ("Bylaws").


                                   ARTICLE IX

                               BOARD OF DIRECTORS

         The business and affairs of the Corporation shall be managed by or
under the direction of the Board of Directors. In addition to the authority and
powers conferred upon the Board of Directors by the DGCL or by the other
provisions of this Certificate of Incorporation (this "Certificate of
Incorporation"), the Board of Directors is hereby authorized and empowered to
exercise all such 






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powers and do all such acts and things as may be exercised or done by the
Corporation, subject to the provisions of the DGCL, this Certificate of
Incorporation and the Bylaws; provided, however, that no Bylaws hereafter
adopted by the stockholders of the Corporation, or any amendments thereto, shall
invalidate any prior act of the Board of Directors that would have been valid if
such Bylaws or amendment had not been adopted.

         A. Number, Election and Terms of Directors. The number of directors
which shall constitute the whole Board of Directors shall be fixed from time to
time by a majority of the directors then in office. Each director shall hold
office until the next annual meeting and shall serve until his successor shall
have been duly elected and qualified or until his earlier death, resignation or
removal. Election of directors need not be by written ballot unless the Bylaws
of the Corporation shall so provide.

         B. Removal of Directors. No director of the Corporation shall be
removed from office as a director by vote or other action of the stockholders or
otherwise except for cause, and then only by the affirmative vote of the holders
of at least a majority of the voting power of all outstanding shares of capital
stock of the Corporation generally entitled to vote in the election of
directors, voting together as a single class. Except as may otherwise be
provided by law, cause of removal of a director shall be deemed to exist only
if: (i) the director whose removal is proposed has been convicted, or where a
director is granted immunity to testify where another has been convicted, of a
felony by a court of competent jurisdiction and such conviction is no longer
subject to direct appeal; (ii) such director has been found by the affirmative
vote of a majority of the entire Board of Directors at any regular or special
meeting of the Board of Directors called for that purpose or by a court of
competent jurisdiction to have been grossly negligent or guilty of misconduct in
the performance of his duties to the Corporation in a matter of substantial
importance to the Corporation; or (iii) such director has been adjudicated by a
court of competent jurisdiction to be mentally incompetent, which mental
incompetency directly affects his ability as a director of the Corporation.

         C. Vacancies. Newly created directorships resulting from any increase
in the number of directors and any vacancies on the Board of Directors resulting
from death, resignation, removal or other cause shall be filled by the
affirmative vote of a majority of the remaining directors then in office, even
though less than a quorum of the Board of Directors. Any director elected in
accordance with the preceding sentence shall hold office for the remainder of
the full term of the class of directors in which the new directorship was
created or the vacancy occurred and until such director's successor shall have
been elected and qualified or until his earlier death, resignation or removal.
No decrease in the number of directors constituting the Board of Directors shall
shorten the term of any incumbent director.



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                                    ARTICLE X

                                 INDEMNIFICATION

         A. Mandatory Indemnification. Each person who at any time is or was a
director or officer of the Corporation, and is threatened to be or is made a
party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative, arbitrative or investigative (a
"Proceeding"), by reason of the fact that such person is or was a director or
officer of the Corporation, or is or was serving at the request of the
Corporation as a director, officer, partner, venturer, proprietor, member,
employee, trustee, agent or similar functionary of another domestic or foreign
corporation, partnership, joint venture, sole proprietorship, trust, employee
benefit plan or other for-profit or non-profit enterprise, whether the basis of
a Proceeding is an alleged action in such person's official capacity or in
another capacity while holding such office, shall be indemnified and held
harmless by the Corporation to the fullest extent authorized by the DGCL, or any
other applicable law as may from time to time be in effect (but, in the case of
any such amendment or enactment, only to the extent that such amendment or law
permits the Corporation to provide broader indemnification rights than such law
prior to such amendment or enactment permitted the Corporation to provide),
against all expense, liability and loss (including, without limitation, court
costs and attorneys' fees, judgments, fines, excise taxes or penalties, and
amounts paid or to be paid in settlement) actually and reasonably incurred or
suffered by such person in connection with a Proceeding, and such
indemnification shall continue as to a person who has ceased to be a director or
officer of the Corporation or a director, officer, partner, venturer,
proprietor, member, employee, trustee, agent or similar functionary of another
domestic or foreign corporation, partnership, joint venture, sole
proprietorship, trust, employee benefit plan or other for-profit or non-profit
enterprise, and shall inure to the benefit of such person's heirs, executors and
administrators. The Corporation's obligations under this Section A include, but
are not limited to, the convening of any meeting, and the consideration of any
matter thereby, required by statute in order to determine the eligibility of any
person for indemnification.

         B. Prepayment of Expenses. Expenses incurred by a director or officer
of the Corporation in defending a Proceeding shall be paid by the Corporation in
advance of the final disposition of such Proceeding to the fullest extent
permitted by, and only in compliance with, the DGCL or any other applicable laws
as may from time to time be in effect, including, without limitation, any
provision of the DGCL which requires, as a condition precedent to such expense
advancement, the delivery to the Corporation of an undertaking, by or on behalf
of such director or officer, to repay all amounts so advanced if it shall
ultimately be determined that such director or officer is not entitled to be
indemnified under Section A of this Article X or otherwise. Repayments of all
amounts so advanced shall be upon such terms and conditions, if any, as the
Corporation's Board of Directors deems appropriate.

         C. Vesting. The Corporation's obligation to indemnify and to prepay
expenses under Sections A and B of this Article X shall arise, and all rights
granted to the Corporation's directors and officers hereunder shall vest, at the
time of the occurrence of the transaction or event to which a Proceeding
relates, or at the time that the action or conduct to which such Proceeding
relates was 





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first taken or engaged in (or omitted to be taken or engaged in), regardless of
when such Proceeding is first threatened, commenced or completed.
Notwithstanding any other provision of this Certificate of Incorporation or the
Bylaws of the Corporation, no action taken by the Corporation, either by
amendment of this Certificate of Incorporation or the Bylaws of the Corporation
or otherwise, shall diminish or adversely affect any rights to indemnification
or prepayment of expenses granted under Sections A and B of this Article X which
shall have become vested as aforesaid prior to the date that such amendment or
other corporate action is effective or taken, whichever is later.

         D. Enforcement. If a claim under Section A or Section B or both
Sections A and B of this Article X is not paid in full by the Corporation within
thirty (30) days after a written claim has been received by the Corporation, the
claimant may at any time thereafter bring suit in a court of competent
jurisdiction against the Corporation to recover the unpaid amount of the claim
and, if successful in whole or in part, the claimant shall also be entitled to
be paid the expense of prosecuting such claim. It shall be a defense to any such
suit (other than a suit brought to enforce a claim for expenses incurred in
defending any Proceeding in advance of its final disposition where the required
undertaking, if any is required, has been tendered to the Corporation) that the
claimant has not met the standards of conduct which make it permissible under
the DGCL or other applicable law to indemnify the claimant for the amount
claimed, but the burden of proving such defense shall be on the Corporation. The
failure of the Corporation (including its Board of Directors, independent legal
counsel, or stockholders) to have made a determination prior to the commencement
of such suit as to whether indemnification is proper in the circumstances based
upon the applicable standard of conduct set forth in the DGCL or other
applicable law shall neither be a defense to the action nor create a presumption
that the claimant has not met the applicable standard of conduct. The
termination of any Proceeding by judgment, order, settlement, conviction, or
upon a plea of nolo contendere or its equivalent, shall not, of itself, create a
presumption that the person did not act in good faith and in a manner which such
person reasonably believed to be in or not opposed to the best interests of the
Corporation, and, with respect to any criminal Proceeding, had reasonable cause
to believe that his conduct was unlawful.

         E. Nonexclusive. The indemnification provided by this Article X shall
not be deemed exclusive of any other rights to which a person seeking
indemnification may be entitled under any statute, bylaw, other provisions of
this Certificate of Incorporation, agreement, vote of stockholders or
disinterested directors or otherwise, both as to action in such person's
official capacity and as to action in another capacity while holding such
office.

         F. Permissive Indemnification. The rights to indemnification and
prepayment of expenses which are conferred to the Corporation's directors and
officers by Sections A and B of this Article X may be conferred upon any
employee or agent of the Corporation if, and to the extent, authorized by the
Board of Directors.






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         G. Insurance. The Corporation shall have power to purchase and maintain
insurance, at its expense, on behalf of any person who is or was a director,
officer, employee or agent of the Corporation, or is or was serving at the
request of the Corporation as a director, officer, partner, venturer,
proprietor, member, employee, trustee, agent or similar functionary of another
domestic or foreign corporation, partnership, joint venture, sole
proprietorship, trust, employee benefit plan or other for-profit or non-profit
enterprise against any expense, liability or loss asserted against such person
and incurred by such person in any such capacity, or arising out of such
person's status as such, whether or not the Corporation would have the power to
indemnify such person against such expense, liability or loss under the
provisions of this Article X, the Corporation's Bylaws, the DGCL or other
applicable law.

         H. Implementing Arrangements. Without limiting the power of the
Corporation to procure or maintain insurance or other arrangement on behalf of
any of the persons as described in Section G of this Article X, the Corporation
may, for the benefit of persons eligible for indemnification by the Corporation,
(i) create a trust fund, (ii) establish any form of self-insurance, (iii) secure
its indemnity obligation by grant of a security interest or other lien on the
assets of the Corporation, or (iv) establish a letter of credit, guaranty or
surety arrangement.


                                   ARTICLE XI

                           LIMITED DIRECTOR LIABILITY

         No director of the Corporation shall be personally liable to the
Corporation or to its stockholders for monetary damages for breach of fiduciary
duty as a director, provided that this Article XI shall not eliminate or limit
the liability of a director: (i) for any breach of the director's duty of
loyalty to the Corporation or its stockholders, (ii) for acts or omissions not
in good faith or which involve intentional misconduct or a knowing violation of
law, (iii) under Section 174 of the DGCL, as it may hereafter be amended from
time to time, for any unlawful payment of a dividend or unlawful stock purchase
or redemption, or (iv) for any transaction from which the director derived an
improper personal benefit.

         If the DGCL is amended to authorize corporate action further
eliminating or limiting the personal liability of directors, then the liability
of a director of the Corporation shall be eliminated or limited to the fullest
extent permitted by the DGCL, as so amended. No amendment to or repeal of this
Article XI will apply to, or have any effect on, the liability or alleged
liability of any director of the Corporation for or with respect to any acts or
omissions of the director occurring prior to such amendment or repeal.





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                                   ARTICLE XII

                                     BYLAWS

         The Board of Directors is expressly authorized to adopt, amend or
repeal the Bylaws of the Corporation, or adopt new Bylaws, without any action on
the part of the stockholders, except as may be otherwise provided by applicable
law or the Bylaws of the Corporation.


                                  ARTICLE XIII

                           ARRANGEMENTS WITH CREDITORS

         Whenever a compromise or arrangement is proposed between the
Corporation and its creditors or any class of them and/or between the
Corporation and its stockholders or any class of them, any court of equitable
jurisdiction within the State of Delaware may, on the application in a summary
way of the Corporation or of any creditor or stockholder thereof, or on the
application of any receiver or receivers appointed for the Corporation under
Section 291 of Title 8 of the Delaware Code, order a meeting of the creditors or
class of creditors, and/or of the stockholders or class of stockholders of the
Corporation, as the case may be, to be summoned in such manner as the said court
directs. If the majority in number representing three-fourths in value of the
creditors or class of creditors, and/or of the stockholders or class of
stockholders, of the Corporation, as the case may be, agree to any compromise or
arrangement and to any reorganization of the Corporation as a consequence of
such compromise or arrangement, the said compromise or arrangement and the said
reorganization shall, if sanctioned by the court to which the said application
has been made, be binding on all the creditors or class of creditors, and/or on
all the stockholders or class of stockholders, of the Corporation, as the case
may be, and also on the Corporation.


                                   ARTICLE XIV

                           INITIAL BOARD OF DIRECTORS

         The names and mailing addresses of the initial members of the Board of
Directors are:

                           Charles T. Goodson
                           625 East Kaliste Saloom Road
                           Lafayette, Louisiana 70508

                           Alfred J. Thomas, II
                           625 East Kaliste Saloom Road
                           Lafayette, Louisiana 70508

                           Ralph J. Daigle
                           625 East Kaliste Saloom Road
                           Lafayette, Louisiana 70508





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                           Robert R. Brooksher
                           625 East Kaliste Saloom Road
                           Lafayette, Louisiana 70508

                           Daniel G. Fournerat
                           Onebane, Bernard, Torian,
                              Diaz, McNamara & Abell
                           Suite 600, Versailles Centre
                           102 Versailles Boulevard
                           Lafayette, Louisiana 70502

                           William C. Leuschner
                           Optima Petroleum Corporation
                           600-595 Howe Street
                           Vancouver, B.C.
                           Canada, V6C 2T5

                           Robert L. Hodgkinson
                           Optima Petroleum Corporation
                           600-595 Howe Street
                           Vancouver, B.C.
                           Canada, V6C 2T5

                                   ARTICLE XV

                                  INCORPORATOR

         The name and mailing address of the incorporator, the powers and
authority of whom shall cease upon the filing of this Certificate of
Incorporation, is:

                           Robert G. Reedy, Esq.
                           Porter & Hedges, L.L.P.
                           700 Louisiana, 35th Floor
                           Houston, Texas 77002


                                   ARTICLE XVI

                                  DOMESTICATION

         The Corporation (formerly named "Lathwell Resources" until February 5,
1988, and "Optima Energy Corporation" until July 9, 1992 and "Optima Petroleum
Corporation" until the date of filing of this Certificate of Incorporation) was
incorporated under the laws of British Columbia, Canada, on April 11, 1983, and
was continued as a federal Canadian corporation on June 14, 1994. Simultaneously
with the filing of this Certificate of Incorporation, the Corporation has filed
its Certificate of Domestication with the Secretary of State of the State of
Delaware in order to 



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domesticate itself in the State of Delaware. This Certificate of Incorporation
amends and supersedes in all respects the previously adopted Articles of
Incorporation, as amended to date, of the Corporation. Each share of the common
stock of the Corporation outstanding on the effective date of this Certificate
of Incorporation is hereby converted into one share of the Common Stock without
any further action by the Corporation or any stockholder, and the currently
outstanding share certificate representing such share of common stock
outstanding on the effective date of this Certificate of Incorporation shall
represent one share of the Common Stock until such share certificate is
surrendered for transfer or reissue.

                                  ARTICLE XVII

                              SECTION 203 ELECTION

         The Corporation expressly elects not to be governed by Section 203 of
the DGCL.

         I, the undersigned, being the incorporator, for the purpose of forming
a corporation pursuant to the DGCL, do make this Certificate of Incorporation,
hereby declaring under the penalties of perjury that this is my act and deed and
that the facts stated herein are true, and accordingly has executed this
Certificate of Incorporation on August 21, 1998.



                                                  /s/ Robert G. Reedy
                                             -----------------------------------
                                                  Robert G. Reedy, Esq.





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