<SEC-DOCUMENT>0000000000-17-034910-index.html : 20171031
<SEC-HEADER>0000000000-17-034910.hdr.sgml : 20171031
<ACCEPTANCE-DATETIME>20171002123944
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0000000000-17-034910
CONFORMED SUBMISSION TYPE:	UPLOAD
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20171002

FILED FOR:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ECOPETROL S.A.
		CENTRAL INDEX KEY:			0001444406
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			F8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		UPLOAD

	BUSINESS ADDRESS:	
		STREET 1:		CARRERA 7 NO 37-69
		CITY:			BOGOTA
		STATE:			F8
		ZIP:			00000
		BUSINESS PHONE:		5712345000

	MAIL ADDRESS:	
		STREET 1:		CARRERA 7 NO 37-69
		CITY:			BOGOTA
		STATE:			F8
		ZIP:			00000
PUBLIC REFERENCE ACCESSION NUMBER:		0001144204-17-030262 [HTML]
</SEC-HEADER>
<DOCUMENT>
<TYPE>LETTER
<SEQUENCE>1
<FILENAME>filename1.pdf
<TEXT>
Document 1 - file: filename1.pdf

</DOCUMENT>
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