Inactive Well Program Concepts
The API inactive well program is a risk-based approach for determining if an inactive well poses a threat to fresh water aquifers, surface soils, or surface waters. The methodology described in the following sections identifies wellbore conditions that prevent fluid migration from pressured formations. Fluid migration potentials for inactive wells are defined based upon the presence of pressured formations and upon the well construction and its mechanical integrity.
Source: API BULLETIN E3, Environmental Guidance Document: Well Abandonment and Inactive Well Practices for U.S. Exploration and Production Operations, First Edition, January 1993 (Reaffirmed June 2000). Global Standards