UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

x

Rule 13d-1(b)

o

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 678049107

1

Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (Entities Only)

Harvest Fund Advisors LLC

2

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

o

3

SEC Use Only

4

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:

5

Sole Voting Power
1,046,983

6

Shared Voting Power
0

7

Sole Dispositive Power
1,046,983

8

Shared Dispositive Power
0

9

Aggregate Amount Beneficially Owned by Each Reporting Person
1,046,983

10

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11

Percent of Class Represented by Amount in Row (9)
5.4%

12

Type of Reporting Person (See Instructions)
IA

Item 1(a).

Name of Issuer:

Oiltanking Partners, L.P.

Item 1(b).

Address of Issuer’s Principal Executive Offices:

15631 Jacintoport Blvd., Houston, TX 77015

Item 2(a).

Name of Person Filing:

Harvest Fund Advisors LLC

Item 2(b).

Address of Principal Business Office or, if none, Residence:

100 W. Lancaster Avenue, Suite 200, Wayne, PA 19087

Item 2(c).

Citizenship:

Harvest Fund Advisors LLC is a Delaware limited liability company

Item 2(d).

Title of Class of Securities:

Common Units Representing Limited Partner Interests

Item 2(e).

CUSIP Number:

678049107

Item 3.

If this statement is filed pursuant to 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

o

Broker or dealer registered under section 15 of the Act;

(b)

o

Bank as defined in section 3(a)(6) of the Act;

(c)

o

Insurance company as defined in section 3(a)(19) of the Act;

(d)

o

Investment company registered under section 8 of the Investment Company Act of 1940;

(e)

x

An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);

(g)

o

A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);

(h)

o

A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

o

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940;

(j)

o

A non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J);

(k)

o

Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with

Rule 240.13d-1(b)(1)(ii)(J), please specify the type of institution:____________________________

Item 4.

Ownership.

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:   

1,046,983  

(b)

Percent of class:   

5.4%

(c)

Number of shares as to which such person has:

(i)

Sole power to vote or to direct the vote:   

1,046,983  

(ii)

Shared power to vote or to direct the vote:    

0

(iii)

Sole power to dispose or to direct the disposition of:  

1,046,983   

(iv)

Shared power to dispose or to direct the disposition of:   

0

Harvest Fund Advisors LLC (Harvest) is a registered investment adviser which furnishes investment advice to private pooled funds and managed accounts (collectively Clients) and exercises trading authority over securities held in accounts on behalf of such Clients. In its role as an investment adviser to its Client portfolios, Harvest has sole dispositive power over the portfolios and, as a result, may be deemed to be the beneficial owner of the securities. However, none of the securities listed herein are owned of record by Harvest, and Harvest disclaims any beneficial interest in such securities.

Item 5.

Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following   o.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

The Clients noted in Item 4 above each have the right to receive all dividends from, and the proceeds from the sale of, such securities held in their respective accounts.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

Not applicable.

Item 8.

Identification and Classification of Members of the Group.

Not applicable.

Item 9.

Notice of Dissolution of Group.

Not applicable.

Item 10.

Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of and do not have the effect of changing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such purpose or effect for the time being.

February 14, 2013

Date

/s/ Anthony Merhige

Signature

Anthony Merhige, COO & General Counsel

Name/Title