声明显示，厄瓜多尔石油公司（OCP）重质原油管道恢复输油。

Group 1 - The core point of the article is that the Ecuadorian Oil Company (OCP) has resumed oil transportation through its heavy crude oil pipeline [1] Group 2 - The resumption of oil transport is significant for the company's operations and may impact its production levels and revenue [1] - The heavy crude oil pipeline is a critical infrastructure for the Ecuadorian oil industry, facilitating the export of crude oil [1] - The restoration of the pipeline could lead to improved market conditions for Ecuador's oil exports, potentially benefiting the overall economy [1]