Initial Statement of Beneficial Ownership (3)

POWER OF ATTORNEY



 KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned, do 

hereby constitute and appoint Robert L. Hayter, Bruce A. 

Metzinger, and Christina M. Ibrahim, or any of them acting alone, 

my true and lawful attorneys-in-fact and agents, with full power 

of substitution and resubstitution, to prepare and sign for me, 

and in my name, place and stead, in any and all capacities, 

including preparing and submitting a Uniform Application for 

Access Codes to File on EDGAR as well as any and all reports as 

may from time to time be required under Section 16a of the 

Securities Exchange Act of 1934, as amended, and the rules, 

regulations, and requirements of the Securities Exchange 

Commission in respect thereof, and to file the same with the 

Securities and Exchange Commission, granting unto said attorneys-

in-fact and agents full power and authority to do and perform each 

and every act and thing requisite and necessary to be done, with 

full power to each of them to act alone, as fully and to all 

intents and purposes as I might or could do in person, hereby 

ratifying and confirming all that said attorneys in fact and 

agents or any of them, or their substitutes, may lawfully do or 

cause to be done by virtue hereof.

       This Power of Attorney shall remain in full force and effect 

until the undersigned is no longer required to file Forms 3, 4, 

and 5 with respect to the undersigned's holdings of and 

transactions in securities issued by the Company, unless earlier 

revoked by the undersigned in a signed writing delivered to the 

foregoing attorney in fact.

 IN WITNESS WHEREOF, I hereto set my hand this 3rd day of 

December, 2014.



      

      s  Abdulaziz Fahd Al Khayyal