Statement of Changes in Beneficial Ownership (4)

FORM 4 [ X ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * HELMERICH HANS	2. Issuer Name and Ticker or Trading Symbol ATWOOD OCEANICS INC [ ATW ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __ X __ Director                      _____ 10% Owner _____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle) 15011 KATY FREEWAY SUITE 800	3. Date of Earliest Transaction (MM/DD/YYYY) 10/6/2017
(Street) HOUSTON, TX 77094 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Atwood Oceanics, Inc. Common Stock	10/6/2017		D		75266	D	(1)	0	D

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(2)	10/6/2017		D			22497	(2)	(2)	Atwood Oceanics, Inc. Common Stock	22497	(2)	0	D

Explanation of Responses:
(1)	On May 29, 2017, the Issuer entered into an Agreement and Plan of Merger with Ensco PLC ("Parent") and Echo Merger Sub LLC (the "Merger Agreement"). Pursuant to the Merger Agreement, on October 6, 2017, these shares were cancelled and converted into the right to receive 120,425 class A ordinary shares of Parent and a cash payment for fractional shares pursuant to the Merger Agreement.
(2)	Pursuant to the Merger Agreement, on October 6, 2017, these Restricted Stock Units were canceled and converted into the right to receive 30,651 class A ordinary shares of Parent and a cash payment for 3,340 deferred shares which are included in the total Restricted Stock Units and any fractional shares. The actual number of class A ordinary shares of Parent issued to the reporting person was reduced by an amount necessary to satisfy applicable tax withholding obligations.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
HELMERICH HANS 15011 KATY FREEWAY SUITE 800 HOUSTON, TX 77094	X

Signatures
/s/ Hans Helmerich, Walter A. Baker By Power of Attorney		10/6/2017
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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