petroleum production engineering

ASSIGNMENT 1 1. The Azuntan oilfields has about fifteen wells and the field has been producing hydrocarbon for 10 years. Five years down the line, 4 of the wells stopped producing. Recently five of the wells which have been producing at a rate of 3600 B/D each have declined making their total production not too good for business. As the production engineer managing the fields: a. How do you determine exactly which wells are not contributing to the total flow? b. What are the possible causes of the production decline? c. What could be the reason for the four wells which stopped producing just after five years? d. What measures can you put in place to arrest this production decline