September 17, 2002

Securities and Exchange Commission
Division of Corporate Finance
450 Fifth Street, N.W.
Washington, D.C. 20549

     Re:  OSCA, Inc. Form S-4 (File Number 333-62102)

Ladies and Gentlemen:

     This application is made by OSCA, Inc. ("OSCA") pursuant to Rule 477 under
the Securities Act of 1933, as amended (the "Securities Act"), for permission to
withdraw its registration statement (the "Registration Statement") on Form S-4
(File Number 333-62102), as amended, that was originally filed with the
Securities and Exchange Commission (the "Commission") on June 1, 2001. The
Registration Statement was not declared effective, and no OSCA common stock has
been offered, issued or sold under the Registration Statement.

     The withdrawal requested hereby is being sought because OSCA has been
acquired by BJ Services Company, a Delaware corporation ("BJ Services"),
effective as of today at or about 8:00 a.m. Eastern time (the "Effective Time").
At the Effective Time, OSCA became a wholly owned indirect subsidiary of BJ
Services, and each outstanding share of OSCA common stock (other than treasury
shares, shares held by BJ Services and shares as to which appraisal rights have
been properly exercised) was converted into the right to receive $28.00 in cash,
without interest.

     On the basis of the foregoing, OSCA respectfully requests that the
Commission grant its application to withdraw the Registration Statement.

     BJ Services anticipates offsetting the filing fees paid by OSCA in
connection with the filing of the Form S-4 against filing fees due for
registration statements filed by BJ Services, as permitted by Rule 457(p) of the
Securities Act.

     Should you have any questions or require anything further, please call
Melinda Brunger of Andrews & Kurth L.L.P. at (713) 220-4305.

                                             Very truly yours,

                                             OSCA, Inc.


                                             By:  /s/ MARGARET B. SHANNON
                                                --------------------------------
                                             Name:  Margaret B. Shannon
                                             Title: Vice President and Secretary