SY/T 6646-2017 in English

This document provides guidance on the proper handling and management of abandoned wells and long-term suspended wells. It outlines procedures for identifying, assessing, and mitigating potential environmental and safety risks associated with these wells. The content covers various aspects including site investigation, engineering design, construction, and post-operation monitoring. The document is intended to support industry professionals in ensuring compliance with relevant regulations and best practices. It includes detailed recommendations for the safe and effective closure of wells that are no longer in use or have been temporarily halted. The information presented is applicable to a wide range of well types and operational environments. The document serves as a reference for individuals and organizations involved in well management and environmental protection efforts.