POWER OF ATTORNEY

        The undersigned constitutes and appoints John Niedzwiecki, J. Eric
Johnson, Ben Smolij, Brigitte Hunt, and Anna Gryska, and each of them
individually, as the undersigned's true and lawful attorneys-in-fact and agents
for the undersigned and in the undersigned's name, place and stead, to:

        1.   prepare, sign, and submit to the Securities and Exchange Commission
            (the "SEC") on its Electronic Data Gathering, Analysis, and
            Retrieval Filer Management website a Form ID application, including
            any amendments and exhibits thereto, and any other related documents
            as may be necessary or appropriate, to obtain from the SEC access
            codes to permit filing on the SEC's EDGAR system, granting unto said
            attorneys-in-fact and agents full power and authority to do and
            perform each act and thing requisite and necessary to be done as
            required by any rule or regulation of the SEC and the EDGAR Filer
            Manual as fully and to all intents and purposes as the undersigned
            might or could do in person, hereby ratifying and confirming all
            that said attorneys-in-fact and agents  may lawfully do or cause to
            be done by virtue hereof; and

        2.  sign any and all SEC statements of beneficial ownership of
            securities of the undersigned relating to NOV Inc. (the "Company")
            on Schedule 13D as required under Section 13 and Forms 3, 4 and 5 as
            required under Section 16(a) of the Securities Exchange Act of 1934,
            as amended, and any amendments thereto, and to file the same with
            all exhibits thereto, and other documents in connection therewith,
            with the SEC, the Company, and any stock exchange on which any of
            the Company's securities are listed, granting unto said attorneys-
            in-fact and agents full power and authority to do and perform each
            act and thing requisite and necessary to be done under said Section
            13 and Section 16(a), as fully and to all intents and purposes as
            the undersigned might or could do in person, hereby ratifying and
            confirming all that said attorneys-in-fact and agents may lawfully
            do or cause to be done by virtue hereof.

        A copy of this power of attorney shall be filed with the SEC. The
authorization set forth above shall continue in full force and effect until the
undersigned revokes such authorization by written instructions to the attorney-
in-fact.

        The authority granted hereby shall in no event be deemed to impose or
create any duty on behalf of the attorneys-in-fact with respect to the
undersigned's obligations to file a Form ID, Schedule 13Ds and Forms 3, 4 and 5
with the SEC.


Dated: September 28, 2021

                                        By: /s/ Christy Novak
                                            ------------------------------------
                                            Name: Christy Lynn Novak