Smith International, Inc. (“Smith”) (NYSE:SII) and W-H Energy Services, Inc. (“W-H”) (NYSE:WHQ) today announced that in order to coincide with the scheduled termination of the Hart-Scott-Rodino (“HSR”) waiting period, the expiration date of the exchange offer to acquire the outstanding shares of W-H has been extended until 12:00 midnight, Eastern time, at the end of Monday, August 18, 2008, unless extended further. Based on a preliminary count by the exchange agent for the exchange offer there were tendered, and not withdrawn, 8,200,290 shares of W-H common stock as of August 7, 2008.

The applicable waiting period under the HSR Antitrust Improvements Act has not yet expired or been terminated. The HSR waiting period will expire at 11:59 p.m., Eastern time, on August 18, 2008, unless early termination of the waiting period is granted or Smith or W-H receives a request for additional information or documentary material. Smith remains very confident that all required regulatory approvals will be received.

Smith also announced that W-H shareholders may tender their shares pursuant to a guaranteed delivery option if such shareholder’s share certificates are not immediately available or cannot otherwise be delivered by the expiration date. W-H shareholders desiring to tender their shares pursuant to the guaranteed delivery option must comply with the guaranteed delivery procedures set forth in the form of guaranteed delivery that will be filed as an exhibit to Smith’s tender offer statement on Schedule TO.

Smith is a leading supplier of premium products and services to the oil and gas exploration and production industry through its four principal business units – M-I SWACO, Smith Technologies, Smith Services and Wilson.

W-H is a diversified oilfield services company that provides products and services used in connection with the drilling and completion of oil and natural gas wells and the production of oil and natural gas. W-H has operations in North America and select areas internationally.

Certain comments contained herein are forward-looking in nature and are intended to constitute “forward-looking statements.” These forward-looking statements include, without limitation, statements regarding the consummation of the transaction, the expiration of the HSR waiting period and any other statements that are not historical facts. By their nature, forward-looking statements involve risks and uncertainties that could cause actual results to materially differ from those anticipated in the statements.