7% CONVERTIBLE SUBORDINATED DEBENTURE     
                        



				  DUE JULY 1, 2003



 No. ____                                                       
$______________

                           

KEY ENERGY GROUP, INC.

promises to pay to

_________________________________________________________________
______________

or its registered assigns, the principal sum of

_________________________________________________________________
______________

Dollars on July 1, 2003.

Interest Payment Dates: July 1 and January 1, commencing January
1, 1997.

Record Dates: June 15 and December 15 (whether or not a Business
Day).



                                        

KEY ENERGY GROUP, INC.

                                        

By:                                              

Officer of the Company                                       
(SEAL)

                                        

Attest:                                                By:      
                                                              



Officer of the Company  

This is one of the Convertible Subordinated Debentures referred
to in the within-mentioned                     Indenture:       
                                                

_________________________, as Trustee

By  Authorized Signature

Dated:          ,

 



                      7% CONVERTIBLE SUBORDINATED DEBENTURE

	                                DUE JULY 1, 2003



         Unless and until it is exchanged in whole or in part
for  Securities in definitive  form, this Security may not be
transferred  except as a whole by the Depositary to a nominee of
the  Depositary or by a nominee of the  Depositary to the
Depositary or another  nominee of the Depositary or by the
Depositary or any such  nominee  to  a  successor  Depositary 
or  a  nominee  of  such  successor Depositary. Unless this
certificate is presented by an authorized representative of The
Depositary Trust Company, 55 Water Street, New York, New York
("DTC"), to the issuer or its agent for registration of
transfer,  exchange or payment,  and any  certificate  issued is
 registered  in the name of Cede & Co. or such other name as
requested  by an  authorized  representative  of DTC (and any
payment is made to  Cede & Co.  or such  other  entity  as is 
requested  by an  authorized representative  of DTC),  ANY
TRANSFER,  PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE  BY
OR TO ANY PERSON IS  WRONGFUL  inasmuch  as the  registered 
owner hereof, Cede & Co., has an interest herein.



         THE DEBENTURE  EVIDENCED HEREBY HAS NOT BEEN AND WILL
NOT BE REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS
AMENDED (THE "SECURITIES ACT"), OR ANY STATE, SECURITIES LAWS,
AND, ACCORDINGLY,  MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED
STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF U.S. PERSONS
EXCEPT AS SET FORTH IN THE  FOLLOWING  SENTENCE.  BY ITS 
ACQUISITION  HEREOF,  THE HOLDER (1) REPRESENTS THAT (A) IT IS A
"QUALIFIED  INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A  UNDER
 THE  SECURITIES  ACT)  OR  (B) IT IS AN  INSTITUTIONAL 
"ACCREDITED INVESTOR" (AS DEFINED IN RULE 501 (A)(1),  (2), (3)
OR (7) UNDER THE  SECURITIES ACT) ("INSTITUTIONAL ACCREDITED
INVESTOR") OR (C) IT IS NOT A U.S. PERSON AND IS ACQUIRING THE
DEBENTURE EVIDENCED HEREBY IN AN OFFSHORE TRANSACTION,  (2)
AGREES THAT IT WILL NOT WITHIN THREE YEARS AFTER THE ORIGINAL
ISSUANCE OF THE DEBENTURE EVIDENCED HEREBY RESELL OR OTHERWISE
TRANSFER THE DEBENTURE  EVIDENCED HEREBY OR THE COMMON STOCK
ISSUABLE UPON  CONVERSION OF SUCH  DEBENTURE  EXCEPT (A) TO KEY
ENERGY GROUP, INC. OR ANY SUBSIDIARY THEREOF,  (B) INSIDE THE
UNITED STATES TO A QUALIFIED  INSTITUTIONAL BUYER IN COMPLIANCE
WITH RULE 144A UNDER THE SECURITIES ACT, (C) INSIDE THE UNITED
STATES TO AN INSTITUTIONAL  ACCREDITED INVESTOR THAT, PRIOR TO
SUCH TRANSFER, FURNISHES TO AMERICAN STOCK TRANSFER & TRUST
COMPANY, AS TRUSTEE,  A SIGNED LETTER  CONTAINING  CERTAIN 
REPRESENTATIONS  AND  AGREEMENTS RELATING TO THE RESTRICTIONS ON
TRANSFER OF THE DEBENTURE  EVIDENCED HEREBY (THE FORM OF WHICH
LETTER CAN BE OBTAINED FROM SUCH TRUSTEE),  (D) OUTSIDE THE
UNITED STATES IN COMPLIANCE  WITH RULE 904 UNDER THE  SECURITIES
ACT OR (E) PURSUANT TO THE EXEMPTION  FROM  REGISTRATION 
PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF  AVAILABLE) 
AND (3) AGREES THAT IT WILL  DELIVER TO EACH PERSON TO WHOM THE
DEBENTURE  EVIDENCED HEREBY IS TRANSFERRED A NOTICE 
SUBSTANTIALLY TO THE EFFECT

                                        2



 OF THIS  LEGEND.  IN  CONNECTION  WITH ANY TRANSFER OF THE 
DEBENTURE  EVIDENCED HEREBY  WITHIN THREE YEARS AFTER THE
ORIGINAL  ISSUANCE OF SUCH  DEBENTURE,  THE HOLDER MUST CHECK
THE  APPROPRIATE  BOX SET FORTH ON THE REVERSE HEREOF RELATING
TO THE MANNER OF SUCH  TRANSFER AND SUBMIT THIS  CERTIFICATE  TO
AMERICAN  STOCK TRANSFER  &  TRUST  COMPANY,  AS  TRUSTEE.  IF 
THE  PROPOSED  TRANSFEREE  IS AN INSTITUTIONAL  ACCREDITED 
INVESTOR OR A PURCHASER WHO IS NOT A U.S. PERSON, THE HOLDER
MUST, PRIOR TO SUCH TRANSFER,  FURNISH TO AMERICAN STOCK
TRANSFER & TRUST COMPANY, AS TRUSTEE, SUCH CERTIFICATIONS, LEGAL
OPINIONS OR OTHER INFORMATION AS IT MAY  REASONABLY  REQUIRE TO
CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN 
EXEMPTION  FROM,  OR IN A  TRANSACTION  NOT SUBJECT TO, THE 
REGISTRATION REQUIREMENTS  OF THE  SECURITIES  ACT.  THIS 
LEGEND  WILL BE REMOVED  AFTER THE EXPIRATION OF THREE YEARS
FROM THE ORIGINAL ISSUANCE OF THE DEBENTURE  EVIDENCED HEREBY.
AS USED HEREIN,  THE TERMS "OFFSHORE  TRANSACTION,"  "UNITED
STATES" AND "U.S.  PERSON"  HAVE  THE  MEANINGS  GIVEN  TO THEM
BY  REGULATION  S UNDER  THE SECURITIES ACT.



         Section 1.  Interest.  Key Energy Group,  Inc., a
Maryland  corporation (the  "Company"),  promises to pay
interest on the  principal  amount of this 7% Convertible
Subordinated Debenture due 2003 (the "Debenture") at the rate
and in the manner specified below.



         The  Company  shall  pay  interest  on the  principal 
amount  of  this Debenture  in cash at the rate per annum  shown
 above,  which rate shall be (i) subject  to an  increase  of
fifty  (50)  basis  points  (__%) in the event of a Servicios 
Guaranty  Default and (ii)  subject to increase as  specified 
in the Registration  Rights Agreement dated as of July 3, 1993,
to which the Company is a party. The Company will pay interest 
(including the additional  interest as a Servicios  Default 
Payment  or any  additional  interest  referred  to in  such
Registration  Rights  Agreement)  semi-annually  on July 1 and
January 1 of each year  commencing  January 1, 1997,  or if any
such day is not a Business Day, on the next  Business Day (each
an "Interest  Payment  Date") to record  holders of Debentures 
("Holders")  at the  close of  business  on June 15 or  December
 15 immediately  preceding  the  applicable  Interest  Payment 
Date.  A copy of the Indenture  (defined  Below),  the 
Registration  Rights  Agreement and all other agreements 
affecting  this  Debenture  or the Holders may be obtained  from
the Company upon request.



         Interest shall be computed on the basis of a 360-day
year consisting of twelve 30-day  months.  Interest shall accrue
from the most recent date to which interest  has been paid or,
if no interest  has been paid,  from the date of the original
issuance of this Debenture. To the extent lawful, the Company
shall pay interest on overdue  principal at the rate of 1% per
annum in excess of the then applicable  interest  rate on this 
Debenture;  it shall pay interest on overdue installments of
interest (without regard to any applicable grace periods) at the
same rate to the extent lawful.



         Section 2. Method of Payment.  The  Company  shall pay 
interest on the Debentures  (except  defaulted  interest) to
Holders at the close of business on the  record  date  next 
preceding  the  Interest  Payment  Date,  even  if such
Debentures are canceled after such record date and on or before
such Interest

                                        3





Payment Date.  The Holder hereof must surrender this Debenture
to a Paying Agent (as defined in the Indenture) to collect
principal  payments.  The Company shall pay  principal  and 
interest in money of the United  States that at the time of
payment is legal  tender for payment of public and private 
debts.  The Company, however,  may pay principal and interest by
check payable in such money.  It may mail an interest check to a
Holder's registered address.



         Section 3. Paying Agent and Registrar. Initially, the
Trustee shall act as Paying  Agent and  Registrar.  The  Company
 may  change  any  Paying  Agent, Registrar or co-Registrar 
without notice to any Holder.  The Company and any of its
Subsidiaries may act in any such capacity.



         Section  4.  Indenture.  The  Company  issued the 
Debentures  under an Indenture,  dated as of July 3, 1996 (the
"Indenture"),  among the Company,  the Subsidiary  Guarantors
(as defined in the Indenture) and American Stock Transfer &
Trust Company, as Trustee. The terms of the Debentures include
those stated in the  Indenture  and those made part of the 
Indenture  by reference to the Trust Indenture  Act of 1939 (15
U.S.  Code  ss.ss.  77aaa-77bbbb),  as amended by the Trust 
Indenture  Reform  Act of  1990,  and as in  effect  on the 
date  of the Indenture.  The  Debentures  are  subject to all
such  terms,  and  Holders  are referred to the Indenture and
such Act for a statement of such terms.  The terms of the
Indenture shall govern any inconsistencies  between the
Indenture and the Debentures.  Capitalized  used herein that are
not defined herein shall have the meanings  set forth in the 
Indenture.  The  Debentures  are  unsecured  general obligations
of the Company limited to $52,000,000 in aggregate principal
amount.



         Section 5. Optional  Redemption.  The Company may
redeem at any time on or after July 15, 1999, all or any portion
of the Securities  outstanding at the following  redemption 
prices  expressed as a percentage of the principal amount
thereof,  if the  Securities are redeemed  during the 12 month
period  beginning July 15, of the following years:

          		 Year                      Percentage	
        					1999.....................    104%
					       	2000.....................    103%
				       		2001.....................    102%
					       	2002.....................    101%
   

	Section 6. Redemption or Repurchase at Option of Holder.  If
there is a Change of Control (as defined in the Indenture), the
Company will be required to offer to  purchase  on the Change of
 Control  Payment  Date (as  defined in the Indenture) all
outstanding  Debentures at 100% of the principal  amount
thereof, plus  accrued  and  unpaid  interest  to the  date of 
purchase.  Holders  whose Debentures are subject to an offer to
purchase will receive an offer to purchase from the Company 
prior to any related  Change of Control  Payment  Date and may
elect to have their Debentures purchased by completing the form
entitled "Option of Holder to Elect Purchase" appearing below.

                                        4



         Section 7. Notice of Redemption. Notice of redemption
will be mailed at least 30 days but not  more  than 60 days 
before  the  redemption  date to each Holder to be redeemed at
its registered  address.  Debentures may be redeemed in part but
only in whole multiples of $1,000, unless all of the Debentures
held by a Holder are to be redeemed.  On and after the
redemption date,  interest ceases to accrue on Debentures or
portions of them called for redemption.



         Section 8. Conversion.  Subject to the provisions of
the Indenture, the Holder  hereof has the right,  at his 
option,  at any time on or after July 15, 1999 and on or before
the maturity,  or, as to all or any portion  hereof called for
redemption  during such period,  the close of business on the
date fixed for redemption  (unless the  Company  shall  default
in payment due upon  redemption thereof),  to convert the
principal hereof or any portion of such principal that is $1,000
or a multiple thereof, into (A) that number of shares of the
Company's Common Stock,  as such shares shall be  constituted 
at the date of  conversion, obtained by dividing the principal 
amount of this Debenture or portion  thereof to be converted by
the conversion  price of $9.75, or such  conversion  price as
adjusted  from  time to  time  as  provided  in the  Indenture, 
and (B) if such conversion  occurs after  November 1, 1996,  and
before July 1, 1999,  an amount equal to 50% of the interest
otherwise payable on the converted  securities from the date of 
conversion  through  and  including  July 1,  1999,  (the 
"Premium Protection Payment"), such amount payable, at the
option of the Company, in cash or Common Stock based on the
Closing Price of the Common Stock on the conversion date,  by 
surrender of this  Debenture,  together  with a conversion 
notice as provided in the Indenture, to the Company at the
office or agency of the Company maintained  for that  purpose 
in New York,  New York,  and,  unless  the shares issuable on
conversion are to be issued in the same name as this Debenture,
duly endorsed by, or accompanied by instruments of transfer in
form  satisfactory  to the Company duly  executed by, the holder
or by his duly  authorized  attorney ; provided,  however,  that
no Premium Protection  Payments will be made after the
consummation of an all cash tender offer for 100% of the Common
Stock at a price per share  representing a 40% or greater
premium above the conversion  price. No adjustments  in  respect
 of  interest  or  dividends  will  be  made  upon  any
conversion;  provided,  however,  that if the Debenture shall be
surrendered for conversion  during the period  from the close of
business on any record date for the payment of interest  to the 
opening of business on the  following  interest payment date, 
this Debenture  (unless it or the portion being  converted 
shall have been called for redemption on a date in such period)
must be accompanied by an amount, in funds acceptable to the
Company,  equal to the interest payable on such  interest 
payment  date  on  the  principal  amount  being  converted.  No
fractional shares will be issued upon any conversion,  but an
adjustment in cash shall be made,  as provided in the 
Indenture,  in respect of any  fraction of a share which would 
otherwise be issuable  upon the surrender of any Debenture or
Debentures for conversion.  A holder of Debentures is not
entitled to any rights of a holder of Common Stock until such
holder has  converted  his  Debentures to Common Stock,  and
only to the extent such Debentures are to have been converted to
Common Stock under the Indenture.



         Section 9.  Subordination.  The Securities are 
subordinated  to Senior Indebtedness  (as  defined  in the 
Indenture).  To the extent  provided  in the Indenture, Senior
Indebtedness must be paid before the Securities may be paid.

                                        5



 The Company  agrees,  and each Holder by  accepting  a Security
 agrees,  to the subordination  provisions  contained in the
Indenture and authorizes the Trustee to give  effect to such 
provisions,  and each Holder  appoints  the Trustee his
attorney-in-fact for any and all such purposes.



         Section 10.  Denominations,  Transfer,  Exchange.  The 
Debentures  are initially  issued in global form. The global 
Debenture  represents  such of the outstanding  Securities  as
shall be  specified  therein or endorsed  thereon in accordance
with the Indenture.  The definitive Securities are in registered
form without coupons in denominations of $1,000 and integral
multiples of $1,000. The transfer of Debentures  may be 
registered  and  Debentures  may be exchanged as provided in the
 Indenture.  The Registrar and the Trustee may require a Holder,
among other things, to furnish  appropriate  endorsements and
transfer documents and to pay any taxes and fees required by law
or permitted by the Indenture. The Registrar need not exchange
or register the transfer of any Debenture or portion of an
Debenture selected for redemption.  Also, it need not exchange
or register the transfer of any  Debentures  for a period of 15
days before a selection  of Debentures to be redeemed.



         Section  11.  Persons  Deemed  Owners.  Before due 
presentment  to the Trustee for  registration  of the transfer
of this Debenture,  the Trustee,  any Agent and the Company may
deem and treat the person in whose name this Debenture is 
registered  as its absolute  owner for the purpose of  receiving
 payment of principal  of and  interest  on  this  Debenture 
and  for  all  other  purposes whatsoever,  whether or not this
Debenture is overdue,  and neither the Trustee, any Agent nor
the  Company  shall be  affected  by notice to the  contrary. 
The registered  holder  of an  Debenture  shall  be  treated  as
its  owner  for all purposes.



         Section 12. Amendments and Waivers. Subject to certain
exceptions,  the Indenture or the Securities may be amended with
the consent of the Holders of at least a majority in principal
amount of the then outstanding Securities, and any existing 
default  (except a payment  default) may be waived with the
consent of the  holders  of  a  majority  in  principal  amount 
of  the  then  outstanding Securities.  Without the consent of
any Holder,  the Indenture or the Securities may be amended to
cure any ambiguity,  defect or  inconsistency,  to provide for
assumption of Company obligations to Holders or to make any
change that does not adversely affect the rights of any Holder.



         Section 13. Defaults and Remedies.  Events of default
include:  default in payment of  interest  on the  Securities 
for 30 days;  default in payment of principal of or premium on
the Securities  when due;  failure by the Company for 60 days
after notice to it to comply with its agreements in the
Indenture or the Securities;  defaults under and acceleration 
before express maturity of certain other  Indebtedness that
aggregates  $1,000,000 or more; certain final judgments which 
remain  undischarged  if the  aggregate  of all  such  judgments
 exceeds $1,000,000 or more;  certain final  judgments  which
remain  undischarged if the aggregate  of all such  judgments 
exceeds  $1,000,000;  and  certain  events of bankruptcy or
insolvency.  If an Event of Default occurs and is continuing, 
the Trustee  or  the  Holders  of at  least  25% in  principal 
amount  of the  then outstanding  Securities  may  declare all
the  Securities  to be due and payable immediately, except that
in the case of an Event of Default arising from certain events
of bankruptcy or insolvency, all outstanding Securities become
due and

                                        6





payable  immediately  without  further  action  or  notice  and
all  outstanding Securities,  and  all  Obligations  and  Claims
 with  respect  thereto,  become immediately  due and  payable. 
Holders  may not enforce  the  Indenture  or the Securities 
except  as  provided  in the  Indenture.  The  Trustee  may 
require indemnity satisfactory to it before it enforces the
Indenture or the Securities. Subject to certain limitations,
Holders of a majority in principal amount of the then
outstanding  Securities may direct the Trustee in its exercise
of any trust or power. The Trustee may withhold from Holders
notice of any continuing default (except a default in payment of
principal or  interest)  if it  determines  that withholding 
notice is in their  interests.  The Company  must furnish an
annual compliance certificate to the Trustee.



         Section 14.  Trustee  Dealings  with  Company.  The 
Trustee  under the Indenture,  in its individual or any other 
capacity,  may make loans to, accept deposits from, and perform
services for the Company,  the Subsidiary Guarantors or their 
Affiliates,  and may otherwise  deal with the Company,  the
Subsidiary Guarantors or their Affiliates,  as if it were not
Trustee;  provided,  however, that if the Trustee acquires any
conflicting  interest as described in the Trust Indenture Act,
it must eliminate such conflict or resign.



         Section 15. No Recourse Against Others. No director,
officer, employee, agent,  manager,  stockholder  or other 
Affiliates  (other than the  Subsidiary Guarantors), of the
Company or any Subsidiary Guarantor, as such, shall have any
liability for any obligations of the Company or any of the
Subsidiary Guarantors under the  Securities,  the  Indenture or
the  Subsidiary  Guarantees or for any claim  based  on,  in 
respect  of or by  reason  of such  obligations  or their
creation.  Each Holder by  accepting a Debenture  waives and 
releases  all such liability. The waiver and release are part of
the consideration for the issuance of the Debentures.



         Section 16. Subsidiary  Guarantees.  Payment of
principal,  premium (if any) and interest (including interest on
overdue principal and overdue interest, if lawful) is
unconditionally guaranteed by certain Subsidiaries of the
Company.



         Section 17.  Authentication.  This  Debenture  shall
not be valid until authenticated by the manual signature of the
Trustee or an authenticating agent.



         Section 18. Abbreviations.  Customary  abbreviations
may be used in the name of a Holder or an assignee, such as: TEN
COM (= tenants in common), TEN ENT (=  tenants  by  the 
entireties),  JT  TEN  (=  joint  tenants  with  right  of
survivorship  and not as tenants in common),  CUST = Custodian),
 and U/G/M/A (= Uniform Gifts to Minors Act).



         Section 19. CUSIP Numbers. Pursuant to a recommendation
 promulgated by the Committee on Uniform  Security 
Identification  Procedures,  the Company has caused  CUSIP 
numbers to be  printed on the  Debentures  and has  directed 
the Trustee  to use CUSIP  numbers  in notices of  redemption 
as a  convenience to Holders.  No representation is made as to
the accuracy of such numbers either as printed  on the 
Debentures or as  contained  in any notice of  redemption  and
reliance may be placed only on the other identification number
placed thereon.

                                        7





         Section  20.  Additional  Rights  of  Holders  of 
Transfer  Restricted Securities.  In addition to the rights 
provided to Holders of Securities  under the Indenture,  Holders
of Transferred  Restricted Securities shall have all the rights 
set  forth  in the  Registration  Rights  Agreement  referred 
to in the Indenture  and certain  other  agreements  executed
and  delivered in connection therewith.



         The Company will furnish to any Holder upon written
request and without charge a copy of the Indenture. Request may
be made to:



Key Energy Group, Inc.                           	

255 Livingston Avenue                           

New Brunswick, New Jersey 08901                          

 Attn: Francis D. John



                                        8





                                 ASSIGNMENT FORM

         

To assign this Security, fill in the form below: (I) or (we)
assign and transfer this Security to

_________________________________________________________________
_____________                  (Insert assignee's soc. sec. or
tax I.D. no.)

_________________________________________________________________
_____________

_________________________________________________________________
_____________

_________________________________________________________________
_____________

_________________________________________________________________
_____________              (Print or type assignee's name,
address and zip code)

and irrevocably  appoint 
_____________________________________________________
___________________________________________________   agent  to 
transfer   this Security on the books of the Company.  The agent
may  substitute  another to act for him.

 Date:

                             

Your Signature:                                            

(Sign exactly as your name appears

on the face of this Security)

Signature Guaranteed:



By: (THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (Banks,  Stock Brokers,  Savings and  Loan
Associations,  and Credit Unions)  WITH MEMBERSHIP IN AN
APPROVED  SIGNATURE   GUARANTEE  MEDALLION  PROGRAM  PURSUANT TO
S.E.C. RULE 17Ad-15)

                                        9





                       OPTION OF HOLDER TO ELECT PURCHASE

     

    If you want to elect to have all or any part of this
Security purchased by the Company  pursuant to Section 4.10 of
the  Indenture  (Change of Control), state  the  amount  you 
elect  to  have   purchased  (if  all,   write  "ALL"):
$__________________________

Date:

                           

Your Signature:                                        

(Sign exactly as your name appears on the face of this Security)

Signature Guaranteed:



By: (THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (Banks,  Stock Brokers,  Savings and  Loan
Associations,  and Credit Unions)  WITH MEMBERSHIP IN AN
APPROVED SIGNATURE  GUARANTEE MEDALLION PROGRAM PURSUANT TO
S.E.C. RULE 17Ad-15)



                                       10