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1.
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NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Wellington Management Company, LLP
04-2683227
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2.
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CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [ ]
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3.
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SEC USE ONLY
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4.
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CITIZENSHIP OR PLACE OF ORGANIZATION
Massachusetts
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NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
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5. SOLE VOTING POWER
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0
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6. SHARED VOTING POWER
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1,908,775
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7. SOLE DISPOSITIVE POWER
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0
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8. SHARED DISPOSITIVE POWER
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1,908,775
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9.
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AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,908,775
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10.
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CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
[ ]
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11.
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PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
8.90%
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12.
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TYPE OF REPORTING PERSON
IA
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Item 1.
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(a)
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Name of Issuer
China Natural Gas, Inc.
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(b)
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Address of Issuer's Principal Executive Offices
19th Floor, Building B, Van Metropolis
35 Tang Yan Road, Hi-Tech Zone
Xian, 710065, Shaanxi Province, China
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Item 2.
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(a)
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Name of Person Filing
Wellington Management Company, LLP (''Wellington Management'')
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(b)
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Address of Principal Business Office or, if None, Residence
280 Congress Street
Boston, MA
02210
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(c)
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Citizenship
Massachusetts
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(d)
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Title of Class of Securities
Common Stock
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(e)
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CUSIP Number
168910206
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Item 3.
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If This Statement is Filed Pursuant to
Rule 13d-1(b), or 13d-2(b) or (c),
Check Whether the Person Filing is a:
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(a)
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[ ]
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Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o).
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(b)
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[ ]
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Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).
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(c)
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[ ]
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Insurance Company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c).
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(d)
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[ ]
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Investment Company registered under
Section 8 of the Investment Company Act of 1940
(15 U.S.C. 80a-8).
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(e)
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[X]
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An investment adviser in accordance with
Rule 240.13d-1(b)(1)(ii)(E);
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(f)
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[ ]
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An employee benefit plan or endowment fund in accordance with
Rule 240.13d-1(b)(1)(ii)(F);
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(g)
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[ ]
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A parent holding company or control person in accordance with
Rule 240.13d-1(b)(1)(ii)(G);
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(h)
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[ ]
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A savings association as defined in
Section 3(b) of the Federal Deposit Insurance Act
(12 U.S.C. 1813);
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(i)
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[ ]
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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 (15 U.S.C. 80a-3);
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(j)
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[ ]
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Group, in accordance with Rule 240.13d-1(b)(1)(ii)(J).
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If this statement is filed pursuant to Rule 13d-1(c),
check this box [ ]
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Item 4.
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Ownership.
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Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.
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(a)
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Amount Beneficially Owned:
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Wellington Management, in its capacity as
investment adviser, may be deemed to beneficially own
1,908,775 shares of the Issuer which are held of
record by clients of Wellington Management.
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(b)
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Percent of Class:
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8.90%
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(c)
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Number of shares as to which such person has:
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(i)
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sole power to vote or to direct the vote
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0
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(ii)
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shared power to vote or to direct the vote
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1,908,775
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(iii)
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sole power to dispose or to direct the disposition of
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0
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(iv)
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shared power to dispose or to direct the disposition of
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1,908,775
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Item 5.
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Ownership of Five Percent or Less of Class.
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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:
[ ]
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Item 6.
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Ownership of More than Five Percent on Behalf of Another Person.
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The securities as to which this Schedule is filed by
Wellington Management,
in its capacity as investment adviser, are
owned of record by clients of Wellington Management.
Those clients
have the right to receive, or the power to direct the receipt
of, dividends from, or the proceeds from the sale of, such
securities. No such client is known to have such right or
power with respect to more than five percent of this class of
securities, except as follows:
Not Applicable.
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Item 7.
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Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on by the Parent Holding Company.
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Not Applicable.
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Item 8.
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Identification and Classification of Members of the Group.
Not Applicable.
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Item 9.
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Notice of Dissolution of Group.
Not Applicable.
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Item 10.
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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 or with the effect of changing or
influencing 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 that purpose or effect.
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