UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

       Date of Report (date of earliest event reported): October 29, 2004

                             CARRIZO OIL & GAS, INC.
             (Exact name of registrant as specified in its charter)

     Texas                   000-22915                  76-0415919
(State or other             (Commission             (I.R.S. Employer
jurisdiction of             File Number)           Identification No.)
 incorporation)

              14701 St. Mary's Lane
                  Suite 800
                Houston, Texas                             77079
             (Address of principal                      (Zip code)
               executive offices)



       Registrant's telephone number, including area code: (281) 496-1352

                                 Not applicable
         (Former name or former address, if changed since last report.)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))




Item 1.01.        Entry into a Material Definitive Agreement.

     On October 29,  2004,  Carrizo Oil & Gas,  Inc., a Texas  corporation  (the
"Company"  or "we"),  entered  into a Note  Purchase  Agreement  (the  "Purchase
Agreement")  with PCRL  Investments  L.P.  (the  "Purchaser").  Pursuant  to the
Purchase Agreement,  the Company may issue up to $28 million aggregate principal
amount of its 10% Senior Subordinated Secured Notes due 2008 (the "Notes") for a
purchase price equal to 90% of the principal amount of the Notes then issued. On
October 29, 2004, the Purchaser purchased $18 million aggregate principal amount
of the Notes for a purchase price of $16.2 million.  Subject to the satisfaction
of certain  conditions,  the Company has an option to issue up to an  additional
$10 million  aggregate  principal  amount of the Notes to the  Purchaser  before
October 29, 2006.

     The Notes are secured by a second lien on substantially  all of our current
proved producing reserves and non-reserve assets,  guaranteed by our subsidiary,
and subordinated to our obligations under our Senior Credit Facility (as defined
below).  The Notes bear interest at 10% per annum,  payable quarterly on the 5th
day of March, June, September and December of each year beginning March 5, 2005.
The  principal on the Notes is due December 15, 2008,  and we have the option to
prepay  the Notes at any time.  The Notes  include an option  that  allows us to
pay-in-kind  50% of the  interest  due  until  June 5,  2007 by  increasing  the
principal  due by a like  amount.  Subject  to certain  conditions,  we have the
option to pay the interest on and principal of (at maturity or upon  prepayment)
the Notes with our common stock,  as long as the  Purchaser  would not hold more
than 9.99% of the number of shares of our common stock  outstanding  immediately
after giving effect to such payment.  The value of such shares issued as payment
on the Notes is determined  based on 90% of the volume weighted  average trading
price during a specified  period of days  beginning with the date of the payment
notice and ending before the payment date. The Company's  issuance costs related
to the transaction were estimated to be $600,000.

     As contemplated by the Purchase Agreement,  the Company also entered into a
Registration  Rights  Agreement  with the Purchaser  (the  "Registration  Rights
Agreement").  In the event we choose to issue to shares of our  common  stock as
payment of interest on or the principal of the Notes,  the  Registration  Rights
Agreement  provides  registration  rights with  respect to such  shares.  We are
generally required to file a resale shelf registration statement to register the
resale of such shares under the Securities Act of 1933 (the "Securities Act") if
such shares are not freely  tradable under Rule 144(k) under the Securities Act.
We are subject to certain  covenants under the terms of the Registration  Rights
Agreement,  including the requirement  that the  registration  statement be kept
effective for resale of shares subject to certain "blackout periods," when sales
may not be made.  In certain  circumstances,  including  those  relating  to (1)
delisting  of our  common  stock,  (2)  blackout  periods in excess of a maximum
length of time, (3) certain  failures to make timely  periodic  filings with the
Securities and Exchange Commission, or (4) certain delays or failures to deliver
stock  certificates,  we may be required to  repurchase  common  stock issued as
payment on the Notes and,  in certain  of these  circumstances,  to pay  damages
based on the market value of our common  stock.  In certain  situations,  we are
required to indemnify the holders of registration  rights under the Registration
Rights  Agreement,  including,  without  limitation,  for liabilities  under the
Securities Act.



     The Purchase  Agreement  includes certain  representations,  warranties and
covenants by the parties thereto.  We are subject to certain covenants under the
terms of the Purchase Agreement,  including, without limitation, the maintenance
of the  following  financial  covenants:  (1) a maximum  total  recourse debt to
EBITDA  ratio of not more than 3.50 to 1.0,  (2) a  minimum  EBITDA to  interest
expense  ratio of 2.50 to 1.0, and (3) as of April 30, 2005, a minimum  tangible
net worth of $12.5 million in excess of the tangible net worth of the Company as
of September  30, 2004.  Upon a change of control,  any holders of the Notes may
require  us  to  repurchase  such  holders'  Notes  at a  price  equal  to  then
outstanding  principal amount of such Notes,  together with all interest accrued
on such Notes through the date of repurchase. The Purchase Agreement also places
restrictions  on  additional  indebtedness,  dividends to  stockholders,  liens,
investments,  mergers,  acquisitions,  asset  dispositions,  asset  pledges  and
mortgages,  repurchase or redemption  for cash of our common stock,  speculative
commodity transactions and other matters.

     In  connection  with the Purchase  Agreement,  we amended our senior credit
facility,  which  provides  us with a  revolving  line of  credit of up to $75.0
million and a term loan  facility of up to $25.0  million  (the  "Senior  Credit
Facility"),  pursuant to the First  Amendment to the Amended and Restated Credit
Agreement dated as of October 29, 2004 among the Company, Hibernia National Bank
and Union Bank of  California,  N.A.  (the "Credit  Facility  Amendment").  Such
amendment  includes  without  limitation:  (1) an  adjustment  to  the  covenant
regarding maintenance of a minimum shareholders' equity, including such that the
minimum on and after April 30, 2005 is $112.5 million, (2) the addition of a new
covenant requiring  maintenance of a minimum EBITDA to interest expense ratio of
2.60 to 1.0, and (3) the addition of other  provisions and a consent which allow
for the indebtedness incurred under the Notes.

     Also in connection with the Purchase  Agreement,  we amended the Securities
Purchase  Agreement  dated December 15, 1999,  which governs the terms of our 9%
Senior Subordinated Notes due 2007 (the "Subordinated  Notes"),  pursuant to the
Second  Amendment to the Securities  Purchase  Agreement  dated October 29, 2004
among the Company and an affiliate of the  Purchaser  (the  "Subordinated  Notes
Agreement Amendment"),  who is the holder of our outstanding Subordinated Notes.
Such amendment includes without limitation:  (1) an adjustment to the prepayment
premium,  (2) the addition of a provision that permits  repurchase of our common
stock as required by the Registration Rights Agreement,  and (3) the addition of
provisions which allow for the indebtedness incurred under the Notes.

     The  foregoing  descriptions  of the  Purchase  Agreement,  the Notes,  the
Registration  Rights  Agreement,   the  Credit  Facility   Amendment,   and  the
Subordinated  Notes  Agreement  Amendment  are not complete and are qualified by
reference to the complete  documents  which are attached  hereto as exhibits and
incorporated herein by reference.

Item 2.02         Results of Operations and Financial Condition.

     Our press release dated November 3, 2004 announcing production,  prices and
other  operational  results  of the  Company  for the  third  quarter  of  2004,
furnished as Exhibit 99.1 to this report, is incorporated by reference herein.




     None of the information furnished in Item 2.02 and the accompanying exhibit
will be deemed "filed" for purposes of Section 18 of the Securities Exchange Act
of  1934,  nor  will it be  incorporated  by  reference  into  any  registration
statement  filed by  Carrizo  Oil & Gas under  the  Securities  Act of 1933,  as
amended, unless specifically identified therein as being incorporated therein by
reference.  The furnishing of the information in this report is not intended to,
and does not,  constitute a determination or admission by the Company,  that the
information  in this report is material or complete,  or that  investors  should
consider this information  before making an investment  decision with respect to
any security of the Company.

Item 2.03         Creation of a Direct Financial Obligation.

     On  October  29,  2004,  we  entered  into a Note  Purchase  Agreement  and
consummated related transactions, as described under Item 1.01 above.

Item 9.01.        Financial Statements and Exhibits.

     (c) Exhibits.



Exhibit Number                                 Description
                                                
10.1                                           Note Purchase  Agreement dated as of October 29, 2004 among
                                               Carrizo Oil & Gas, Inc.,  the Purchasers  named therein and
                                               PCRL Investments L.P., as collateral agent.

10.2                                           Form of 10% Senior Subordinated Secured Note due 2008.

10.3                                           Stock  Pledge and  Security  Agreement  dated as of October
                                               29,  2004 by  Carrizo  Oil & Gas,  Inc.  in  favor  of PCRL
                                               Investments L.P., as collateral agent.

10.4                                           Commercial  Guaranty  dated as of October 29, 2004 by CCBM,
                                               Inc. in favor of PCRL Investments
                                               L.P., guarantying the
                                               indebtedness of Carrizo Oil &
                                               Gas, Inc.

10.5                                           Registration  Rights Agreement dated as of October 29, 2004
                                               among  Carrizo  Oil & Gas,  Inc.  and the  Investors  named
                                               therein.

10.6                                           First  Amendment  to Second  Amended  and  Restated  Credit
                                               Agreement dated as of 



                                               October 29, 2004  among  Carrizo  Oil  &  Gas, Inc.,  CCBM,  
                                               Inc.,   Hibernia   National   Bank   and   Union   Bank  of 
                                               California, N.A..

10.7                                           Second Amendment to Securities  Purchase Agreement dated as
                                               of October 29, 2004 among  Carrizo Oil & Gas,  Inc. and the
                                               Investors named therein.

99.1                                           Press  Release,  dated  November 3, 2004,  Announcing  Term
                                               Loan  Financing and  Operational  Results for Third Quarter
                                               2004.








                                   SIGNATURES



     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                      CARRIZO OIL & GAS, INC.




                                      By: /s/ Paul F. Boling
                                          ------------------ 
                                      Name:  Paul F. Boling
                                      Title: Vice President and 
                                             Chief Financial Officer


Date:  November 3, 2004





                                INDEX TO EXHIBITS




Exhibit Number                                 Description
                                                
10.1                                           Note Purchase  Agreement dated as of October 29, 2004 among
                                               Carrizo Oil & Gas, Inc.,  the Purchasers  named therein and
                                               PCRL Investments L.P., as collateral agent.

10.2                                           Form of 10% Senior Subordinated Secured Note due 2008.

10.3                                           Stock  Pledge and  Security  Agreement  dated as of October
                                               29,  2004 by  Carrizo  Oil & Gas,  Inc.  in  favor  of PCRL
                                               Investments L.P., as collateral agent.

10.4                                           Commercial  Guaranty  dated as of October 29, 2004 by CCBM,
                                               Inc. in favor of PCRL Investments
                                               L.P., guarantying the
                                               indebtedness of Carrizo Oil &
                                               Gas, Inc.

10.5                                           Registration  Rights Agreement dated as of October 29, 2004
                                               among  Carrizo  Oil & Gas,  Inc.  and the  Investors  named
                                               therein.

10.6                                           First  Amendment  to Second  Amended  and  Restated  Credit
                                               Agreement dated as of October 29,  2004 among Carrizo Oil &
                                               Gas, Inc.,  CCBM,  Inc.,  Hibernia  National Bank and Union
                                               Bank of California, N.A..

10.7                                           Second Amendment to Securities  Purchase Agreement dated as
                                               of October 29, 2004 among  Carrizo Oil & Gas,  Inc. and the
                                               Investors named therein.

99.1                                           Press  Release,  dated  November 3, 2004,  Announcing  Term
                                               Loan  Financing and  Operational  Results for Third Quarter
                                               2004.