OEC COMPRESSION CORPORATION

     PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF OEC COMPRESSION
 CORPORATION FOR THE SPECIAL MEETING OF STOCKHOLDERS TO BE HELD ON
                               DECEMBER 30, 2000

The undersigned, revoking previous proxies relating to these shares, hereby
acknowledges receipt of the notice and the proxy statement dated December __,
2000 in connection with the Special Meeting of Stockholders of OEC Compression
Corporation, and hereby appoints Ray C. Davis and Kelcy L. Warren, and each of
them, as its true and lawful agents and proxies, each with the power to appoint
his substitute, and hereby authorizes either of them to act and to vote at the
Special Meeting of Stockholders of OEC Compression Corporation to be held on
December __, 2000, and at any adjournments thereof, as indicated, upon all
matters referred to on this proxy card and described in the proxy statement for
the Special Meeting, and, in their discretion, upon any other matters which may
properly come before the meeting.

Shares represented by all properly executed proxies will be voted in accordance
with instructions appearing on this proxy card and in the discretion of the
proxy holders as to any other matter that may properly come before the meeting.

IN THE ABSENCE OF SPECIFIC INSTRUCTIONS, PROXIES WILL BE VOTED FOR THE PROPOSAL
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                                                          Please mark [X]
                                                          your votes
                                                          as in this
                                                          example

1. To approve the Agreement and Plan of Merger       FOR   AGAINST   ABSTAIN
   dated as of July 13, 2000 by and among Hanover    [ ]     [ ]       [ ]
   Compressor Company, Caddo Acqusition Corporation
   and OEC Compression Corporation pursuant
   to which Caddo Acquisition Corporation will merge
   with and into OEC Compression Corporation, as a
   result of which OEC Compression Corporation will
   become a wholly owned subsidary of Hanover
   Compressor Company.


2. In the discretion of the persons acting as proxies, on such other matters as
   may properly come before the Special Meeting or any adjournment(s) thereof.



Signature_____________________ Signature_____________________ Date______________

Please sign as name(s) appears on this proxy card, and date this proxy card. If
a joint account, each joint owner must sign. If signing for a corporation or
partnership as agent, attorney or fiduciary, indicate the capacity in which you
are signing.

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