25 source-backed dated events

Transaction timeline

Only dated events supported by registered documents appear here. Date type, confidence, and contradiction status remain attached to every event.

This archive is built for public-interest research, source verification, right of reply, and correction.

Date discipline: signing, effective date, assignment, approval, closing, operatorship, and reporting date are not interchangeable.

1980-09-10Reported contract-signature date

EVT-0007medium confidenceCON-001

Ecopetrol's 2009 filing states that Ecopetrol and Texas Petroleum signed the Cocorná association contract.

Entities: Ecopetrol S.A.; Texas Petroleum Company

Assets: Cocorná association contract; Teca field

Evidence: EV-0032

1994-12-30Stated operating-agreement effective date

EVT-0008high confidenceCON-001

The embedded Velasquez operating agreement states this effective date.

Entities: Omimex de Colombia, Ltd.; Sabacol, Inc.

Assets: Velasquez field

Evidence: EV-0019; EV-0020

1995-01Reported acquisition month

EVT-0009medium confidenceCON-001

Saba's 1997 filing states that it acquired a 25% Velasquez-field interest from Omimex during this month; it says Omimex had previously acquired 100% from a Texaco subsidiary but does not date that prior event.

Entities: Saba Petroleum Co; Omimex de Colombia, Ltd.; Texaco Inc. subsidiary

Assets: Velasquez field

Evidence: EV-0018

1995-01-01Stated operating-agreement effective date

EVT-0010high confidenceCON-004

The embedded pipeline and Cocorna operating agreements state this effective date.

Entities: Omimex de Colombia, Ltd.; Sabacol, Inc.

Assets: Velasquez-Galan pipeline; Cocorna concession

Evidence: EV-0021; EV-0023; EV-0024; EV-0026

1995-04-20Referenced purchase-and-sale agreement date

EVT-0011high confidence

Exhibits to the pipeline and Cocorna operating agreements identify a purchase-and-sale agreement among Texas Petroleum, Omimex, and Sabacol with this date.

Entities: Texas Petroleum Company; Omimex de Colombia, Ltd.; Sabacol, Inc.

Assets: Cocorna association/concession; Nare association; Velasquez-Galan pipeline

Evidence: EV-0022; EV-0025

1995-09-11Operating-agreement date

EVT-0012high confidenceCON-004

The embedded Velasquez, pipeline, and Cocorna operating agreements were entered into on this date.

Entities: Omimex de Colombia, Ltd.; Sabacol, Inc.

Assets: Velasquez field; Velasquez-Galan pipeline; Cocorna concession

Evidence: EV-0019; EV-0021; EV-0024

1995-09-12Reported acquisition date

EVT-0013medium confidenceCON-004

Saba's 10QSB states that it acquired 25% interests in Teca and Nare and a 50% pipeline interest from a Texaco subsidiary.

Entities: Saba Petroleum Co; Texaco Inc. subsidiary

Assets: Teca oil field; Nare oil field; Velasquez-Galan pipeline

Evidence: EV-0015

1995-09-13Reported operatorship end date

EVT-0014medium confidenceCON-004

Ecopetrol's 2009 filing states that Texas Petroleum operated the Cocorná/Teca field until this date.

Entities: Texas Petroleum Company; Ecopetrol S.A.

Assets: Cocorná association contract; Teca field

Evidence: EV-0033

1995-09-13Reported assignment date

EVT-0024medium confidenceCON-004

ANH and Ecopetrol's 2015 convention recites that Texas Petroleum assigned all its interests, rights, and obligations in the Cocorná Association Contract to Omimex de Colombia and Sabacol on this date.

Entities: Texas Petroleum Company; Omimex de Colombia Ltd.; Sabacol Inc.; ANH; Ecopetrol S.A.

Assets: Cocorná association contract

Evidence: EV-0041

1995-09-14Reported closing date

EVT-0015medium confidenceCON-004

Saba's acquisition-specific 8-K/A states that the transaction closed on this date.

Entities: Saba Petroleum Co; Sabacol, Inc.; Texaco Inc. subsidiary

Assets: Teca oil field; Nare oil field; Velasquez-Galan pipeline

Evidence: EV-0016

1995-10-04Reported operatorship-transition date

EVT-0016medium confidenceCON-004

Saba's SB-2/A states that Texas Petroleum continued as operator through this date and Omimex would succeed it.

Entities: Texas Petroleum Company; Omimex de Colombia, Ltd.; Sabacol, Inc.

Assets: Teca oil field; Nare oil field; Velasquez-Galan pipeline

Evidence: EV-0039

1995-12Reported acquisition month

EVT-0017medium confidence

Saba's 1997 acquisition note states that it acquired a 50% Cocorna interest during this month.

Entities: Saba Petroleum Co; Sabacol, Inc.

Assets: Cocorna oil field

Evidence: EV-0027

1998-03-18Preliminary-agreement date

EVT-0018high confidence

Saba and Omimex Resources entered a preliminary business-combination agreement; the filing does not establish consummation.

Entities: Saba Petroleum Co; Omimex Resources, Inc.

Assets: Proposed combined-company assets

Evidence: EV-0028

1998-12-11Bankruptcy filing date

EVT-0019high confidence

Sabacol filed a voluntary Chapter 11 petition.

Entities: Sabacol, Inc.; Saba Petroleum Co

Assets: Sabacol's Colombian assets

Evidence: EV-0029; EV-0030

1998-12-14Reported promissory-note due date

EVT-0020medium confidence

Saba reports that an approximately $4.2 million note to Omimex Resources secured by Sabacol's pipeline interest was due on this date.

Entities: Saba Petroleum Co; Sabacol, Inc.; Omimex Resources, Inc.

Assets: Unnamed 118-mile pipeline interest as collateral

Evidence: EV-0031

1999-08-05Reported assignment date; disputed month

EVT-0025medium confidenceCON-003

ANH and Ecopetrol's 2015 convention recites that Sabacol assigned all its Cocorná-contract interests, rights, and obligations to Omimex de Colombia on this date; `EV-0035` reports 5 September 1999 for the same described transfer.

Entities: Sabacol Inc.; Omimex de Colombia Ltd.; ANH; Ecopetrol S.A.

Assets: Cocorná association contract

Evidence: EV-0042

1999-09-05Reported assignment date; disputed month

EVT-0021medium confidenceCON-003

Ecopetrol's 2009 filing states that Sabacol assigned all its Cocorná-contract interests, rights, and obligations to Omimex de Colombia on this date; `EV-0042` reports 5 August 1999 for the same described transfer.

Entities: Sabacol Inc.; Omimex de Colombia Ltd.

Assets: Cocorná association contract; Teca field

Evidence: EV-0035

2006-04-01Reported transaction effective date

EVT-0001medium confidence

ONGC/OVL annual reports state that the Colombia transaction was effective from this date.

Entities: Mansarovar Energy Colombia Limited; Omimex de Colombia Ltd.

Assets: Corporate shares/entity and described Colombia interests

Evidence: EV-0003; EV-0009

2006-09-20Reported signing/share-transfer/acquisition date

EVT-0002medium confidenceCON-002

ONGC's 2006-07 report combines signing of agreements and transfer of shares on this date; OVL's 2007-08 report calls it the acquisition date.

Entities: Mansarovar Energy Colombia Limited; Omimex de Colombia Ltd.; Omimex Resources, Inc.

Assets: Corporate shares/entity; exact transaction perimeter unresolved

Evidence: EV-0002; EV-0008

2006-12-01Reported corporate-name-change date

EVT-0022medium confidenceCON-002

Ecopetrol states that, due to the sale of Omimex de Colombia's parent, Omimex de Colombia changed its name to Mansarovar Energy Colombia on this date.

Entities: Omimex de Colombia Ltd.; Mansarovar Energy Colombia Ltd.

Assets: Corporate identity; Cocorná/Teca context

Evidence: EV-0036

2007-03-31Reporting-date project status

EVT-0003medium confidence

OVL's joint-venture table lists MECL Colombia at a 50% company share, Sinopec at 50%, and under production and development.

Entities: ONGC Videsh Limited; Mansarovar Energy Colombia Limited; Sinopec

Assets: MECL, Colombia, Onshore

Evidence: EV-0010

2008-03-31Reporting-date project status

EVT-0004medium confidence

OVL's joint-venture table again lists MECL Colombia at a 50% company share, Sinopec at 50%, and under production and development.

Entities: ONGC Videsh Limited; Mansarovar Energy Colombia Limited; Sinopec

Assets: MECL, Colombia, Onshore

Evidence: EV-0011

2008-10-08Reported field-receipt date; disputed contract-termination date

EVT-0023medium confidenceCON-003; CON-005

Ecopetrol states that it received Teca from Mansarovar at the end of the Cocorná association contract; the same filing records Mansarovar's position that the contract should terminate in 2011.

Entities: Ecopetrol S.A.; Mansarovar Energy Colombia Ltd.

Assets: Cocorná association contract; Teca field

Evidence: EV-0037; EV-0040

2015-03-06Convention signature date

EVT-0005high confidenceCON-003

ANH's contract list reports this date for the TECA COCORNA convention, and the registered convention's signature page directly shows ANH and Ecopetrol signatures dated 6 March 2015.

Entities: Agencia Nacional de Hidrocarburos; Ecopetrol S.A.

Assets: TECA COCORNA

Evidence: EV-0013; EV-0043

2023-03-03Contract signature date reported in 2026 list

EVT-0006high confidenceCON-003

ANH's list records the NARE E&P convention with this signature date.

Entities: Agencia Nacional de Hidrocarburos; Ecopetrol S.A.

Assets: NARE

Evidence: EV-0012