"Introduction", Production Logging: Theoretical and Interpretive Elements, A. Daniel Hill
Download citation file:
Production logging traditionally encompasses a number of well logging techniques run on completed injection or production wells, with the goal being to evaluate the well itself or the reservoir performance. In recent years, however, the role of production logging has expanded to include applications that start at the early stages of drilling and last throughout the life of the well. The purpose of production logs is to evaluate fluid flow inside and outside pipe or, in some cases, to evaluate the well completion directly. The most common application of production logging is the measurement of the well’s flow profile, that is, the distribution of flow into or out of the wellbore. Wade et al. (1965), referring to production wells, state that production logging is used to answer the question, “How much of what fluid is coming from where?” Casedhole formation-evaluation logs, such as pulsed-neutron logs, are sometimes regarded as production logs; for the purposes of this work, however, formation-evaluation logs will not be considered, except as they apply to measuring flow profiles. The primary logging methods that will be considered are temperature, radioactive-tracer, and spinner-flowmeter logs for single-phase flow; temperature, fluid-density, fluid-capacitance, optical gas holdup, and flowmeter logs in multiphase flow; and noise, cement evaluation, and downhole video logs as applied for well completion evaluation. The array type tools that have multiple sensors are also covered.
Sign in
Personal Account
Advertisement
Advertisement
Related Articles
Advertisement
