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 Robb L. Voyles, 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 16(a) 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
attorneys-in-fact.

	IN WITNESS WHEREOF, I hereto set my hand this 12th day of July, 2016.


						/s/ William E. Albrecht
						William E. Albrecht