Career history of Estuardo Alvarez-Calderon
Former positions of Estuardo Alvarez-Calderon
| Companies | Position | Start | End |
|---|---|---|---|
| PETROTAL CORP. | Chief Operating Officer | 17/12/2017 | - |
| Corporate Officer/Principal | - | 30/05/2021 | |
| BPZ Energy, Inc. /Old/ | Corporate Officer/Principal | - | - |
Sterling Resources Ltd.
 Sterling Resources Ltd. Oil & Gas ProductionEnergy Minerals Sterling Resources Ltd. engages in the exploration, appraisal, and development of crude oil and natural gas. It focuses on Peru, South America, in the Bretaña oil field. The company was founded by Robert G. Welty on August 31, 1979 and is headquartered in Houston, TX. | Chief Operating Officer | - | - |
Statistics
International
| United States | 3 |
| Canada | 2 |
Operational
| Chief Operating Officer | 2 |
| Corporate Officer/Principal | 2 |
Sectoral
| Energy Minerals | 4 |
Positions held
Active
Inactive
Listed companies
Private companies
Linked companies
| Listed companies | 1 |
|---|---|
| PETROTAL CORP. | Energy Minerals |
| Private companies | 2 |
|---|---|
Sterling Resources Ltd.
Sterling Resources Ltd. Oil & Gas ProductionEnergy Minerals Sterling Resources Ltd. engages in the exploration, appraisal, and development of crude oil and natural gas. It focuses on Peru, South America, in the Bretaña oil field. The company was founded by Robert G. Welty on August 31, 1979 and is headquartered in Houston, TX. | Energy Minerals |
| BPZ Energy, Inc. /Old/ | Energy Minerals |
