Changes

* Locating sources downhole of undesired fluid phase production such as water entries

* Locating sources downhole of undesired fluid phase production such as water entries

* Isolating mechanical problems such as leaking pipes, leaking packers, and fluid movement in cement channels behind pipe

* Isolating mechanical problems such as leaking pipes, leaking packers, and fluid movement in cement channels behind pipe

* Evaluating the effectiveness of well treatment or workover operations by comparing the before and after job surveys

* Evaluating the effectiveness of well treatment or [[workover]] operations by comparing the before and after job surveys

* Accumulating baseline well performance information for comparison with later monitor surveys

* Accumulating baseline well performance information for comparison with later monitor surveys

* In EOR projects, maintaining injection efficiency by evaluating the injection profiles of individual wells in a field

* In EOR projects, maintaining injection efficiency by evaluating the injection profiles of individual wells in a field