SUGAR LAND, Texas, April 13 /PRNewswire-FirstCall/ -- Noble Corporation (NYSE: NE) confirmed today that its first quarter 2006 earnings press release has been scheduled for Thursday, April 20, 2006, before market open. The Company will also publish the release on its website at http://www.noblecorp.com . In addition, the Company will conduct its related earnings conference call on Friday, April 21, 2006, at 9:00 a.m., Central Time. During the call, management also expects to address its expectations for the current quarter and balance of 2006.

This announcement revises the time of the earnings conference call stated in our previous announcement made on March 28, 2006, which indicated the call would be held at 10:00 a.m. Central Time.

     What:     Noble Corporation First Quarter 2006 Earnings Conference Call

     When:     Friday, April 21, 2006 at 9:00 a.m., Central Time

     Phone:    1-212-346-0260 -- Access code is 21286287 or Noble Corporation
               Conference Call

     Website:  Live webcast available at http://www.noblecorp.com

     How:      Visit the "Investor Relations" area of the Company's website,
               click on "Webcast" and follow the instructions provided. (Note:
               Visit the Company's website prior to the scheduled broadcast
               time in order to download, install and register any audio
               software that may be required in order to access the webcast).

A replay of the conference call will be available on Friday, April 21, 2006, beginning at 12:00 p.m., Central Time, through Friday, April 28, 2006 ending at 5:00 p.m., Central Time. The phone number for the conference call replay is (800) 633-8284 or internationally (402) 977-9140. The access code is the same (as indicated above for the conference call).

All individuals listening to the conference call or the replay are reminded that all conference call material is copyrighted by the Company and cannot be recorded or rebroadcast without the Company's express written consent.

Noble Corporation is a leading provider of diversified services for the oil and gas industry. Contract drilling services are performed with the Company's fleet of 62 mobile offshore drilling units located in key markets worldwide. This fleet consists of 13 semisubmersibles, three dynamically positioned drillships, 43 jackups and three submersibles. The fleet count includes two new F&G JU-2000E enhanced premium jackups, with scheduled delivery of the first unit in the third quarter of 2007 and the second unit in first quarter of 2008. As previously announced, these units have been contracted. Approximately 80 percent of the fleet is currently deployed in international markets, principally including the Middle East, Mexico, the North Sea, Brazil, West Africa and India. The Company provides technologically advanced drilling-related products and services designed to create value for our customers. The Company also provides labor contract drilling services, well site and project management services, and engineering services. The Company's ordinary shares are traded on the New York Stock Exchange under the symbol "NE".

This news release may contain "forward-looking statements" about the business, financial performance and prospects of the Company. Statements about the Company's or management's plans, intentions, expectations, beliefs, estimates, predictions, or similar expressions for the future are forward- looking statements. No assurance can be given that the outcomes of these forward-looking statements will be realized, and actual results could differ materially from those expressed as a result of various factors. A discussion of these factors, including risks and uncertainties, is set forth from time to time in the Company's filings with the U.S. Securities and Exchange Commission.

Additional information on Noble Corporation is available via the worldwide web at http://www.noblecorp.com .

SOURCE  Noble Corporation
    -0-                             04/13/2006
    /CONTACT:  Mark A. Jackson, President and Chief Operating Officer of Noble
Corporation, +1-281-276-6100/
    /Web site:  http://www.noblecorp.com /
    (NE)

CO:  Noble Corporation
ST:  Texas
IN:  OIL
SU:  CCA

CT-AW
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