Introduction - Cased-Hole Log Analysis and Reservoir Performance Monitoring - page 1

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Introduction

Objectives of Production Logging

The objectives of production logging can be categorized as follows:

1. Monitoring of reservoir performance
2. Diagnosis of completion problems
3. Delineating production and injection profi les
4. Gauging treatment effectiveness

Reservoir Performance

Monitoring reservoir performance is an important aspect of production logging.
It allows an operator to establish the overall behavior of a reservoir and hence make
intelligent decisions regarding fi eldwide production or injection strategies. In par-
ticular, the information sought includes details concerning:

Water breakthrough
Water coning
Gas breakthrough
Abnormal formation pressures
Thief zones
Pressure maintenance

In this topic, methods of making measurements in a completed well to gather the
needed data will be discussed.