File No. 333-44677
                                                                  Rule 424(b)(3)

                             Key Energy Services, Inc.

                 Supplement to Prospectus dated February 6, 1998





          Jefferies & Company, Inc.  ("Jefferies") as Selling  Securityholder is
          hereby offering for resale $2,000,000 aggregate principal amount of 5%
          Convertible  Subordinated  Notes due 2004 (the  "Notes") of Key Energy
          Services, Inc., a Maryland Corporation (the "Company").  The Notes are
          being  offered by, and are being sold  through,  Jefferies  at various
          prices;  no commissions  or discounts will be paid in connection  with
          such  resales.  The Company will not receive any of the proceeds  from
          the resale of the Notes offered hereby.





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           The date of this Prospectus Supplement is February 17, 1999.