Pressured Formation

A pressured formation is any producing, injection, disposal, permeable hydrocarbon bearing, or permeable salt water bearing formation penetrated by the well which has sufficient pressure to initiate and sustain significant fluid migration into a fresh water aquifer or to the surface.

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


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