Concentric Tubing

Small diameter tubing installed inside conventional tubing or tubingless completions, normally with the christmas tree in place, using a small rig or hoisting unit.

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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