SEC FORM 5

SEC Form 5

FORM 5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Form 3 Holdings Reported.

Form 4 Transactions Reported.

1. Name and Address of Reporting Person^*

ISAAC ROBERT O

(Last)

(First)

(Middle)

500 N. AKARD STREET

SUITE 4300

(Street)

DALLAS

75201-3331

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
ENSCO INTERNATIONAL INC [ ESV ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Assistant Secretary

3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2006

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)	4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned at end of Issuer's Fiscal Year (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	12/31/2006⁽¹⁾		A	20,617⁽²⁾	A	$50.06⁽³⁾	20,617⁽⁴⁾	D
Common Stock	12/31/2006⁽¹⁾		A	0.095⁽⁵⁾	A	$31.32⁽⁶⁾	91.638⁽⁷⁾	I	ENSCO Savings Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option (Right to Buy)	$31.765	12/31/2006⁽¹⁾		J	2,500⁽⁸⁾		06/03/2007⁽¹³⁾	06/03/2007	Common Stock	2,500⁽⁸⁾	$31.765	2,500⁽⁸⁾	D
Employee Stock Option (Right to Buy)	$30.04	12/31/2006⁽¹⁾		J	5,000⁽⁹⁾		06/02/2007⁽¹³⁾	06/02/2008	Common Stock	5,000⁽⁹⁾	$30.04	5,000⁽⁹⁾	D
Employee Stock Option (Right to Buy)	$27.315	12/31/2006⁽¹⁾		J	12,000⁽¹⁰⁾		08/17/2007⁽¹³⁾	08/17/2009	Common Stock	12,000⁽¹⁰⁾	$27.315	12,000⁽¹⁰⁾	D
Employee Stock Option (Right to Buy)	$33.545	12/31/2006⁽¹⁾		J	5,760⁽¹¹⁾		06/01/2007⁽¹³⁾	06/01/2012	Common Stock	5,760⁽¹¹⁾	$33.545	5,760⁽¹¹⁾	D
Employee Stock Option (Right to Buy)	$50.28	12/31/2006⁽¹⁾		J	6,000⁽¹²⁾		06/01/2007⁽¹³⁾	06/01/2013	Common Stock	6,000⁽¹²⁾	$50.28	6,000⁽¹²⁾	D

Explanation of Responses:

1. Transaction date is issuer's fiscal year end of 12/31/06. All transactions accomplished during 2006 have been previously reported.

2. Amount of securities beneficially owned is as of issuer's fiscal year end of 12/31/06.

3. Price of securities is the trading price at close of business 12/29/06.

4. Amount is representative of securities beneficially owned following all transactions accomplished during the issuer's fiscal year 2006. All previous dispositions of securities have been previously reported.

5. Amount is representative of common stock acquired, and held indirectly, through normal payroll contributions to the ENSCO Savings Plan during the months of August through December 2006.

6. Price of securities dependent upon trading price applicable on date of future transactions. The average cost/price is representative of all beneficially, indirectly owned securities acquired via normal payroll contributions to the ENSCO Savings Plan.

7. Amount is representative of common stock acquired, and held indirectly, through normal payroll contributions to the ENSCO Savings Plan as of 12/31/06.

8. Amount is representative of the balance of vested options out of an original total grant of 10,000 options. The options were vested and exercisable on issuer's fiscal year end of 12/31/06.

9. Amount is representative of the balance of options out of an original total grant of 10,000 options. Of the 5,000 options, 2,500 options were vested and exercisable on issuer's fiscal year end of 12/31/06. The remaining unvested balance of 2,500 options will vest on June 2, 2007.

10. Amount is representative of an original total grant, of which 6,000 options were vested and exercisable on issuer's fiscal year end of 12/31/06. The remaining unvested balance of 6,000 options will vest in increments of 3,000 each on August 17th 2007 and 2008.

11. Amount is representative of an original total grant, of which 1,440 options were vested and exercisable on issuer's fiscal year end of 12/31/06. The remaining unvested balance of 4,320 options will vest in increments of 1,440 on each June 1st 2007, 2008 and 2009.

12. Amount is representative of a total options grant, which will vest in increments of 1,500 each on June 1st 2007, 2008, 2009 and 2010. No options under this grant were vested and exercisable on issuer's fiscal year end of 12/31/06.

13. Employee Stock Options vest at a rate of 25% per annum on the anniversary date of the grant.

Remarks:

	/s/ Robert O. Isaac	01/31/2007
	** 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).
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