Quantitative interpretation of well logs for cases of low quality logs and limited measurement methods

Barbara CZOPEK, Józef NOWAK

Abstract


This paper presents a causal analysis of the most common errors occurring during recording and preliminary processing of well logs on both archival as well as current data obtained with Halliburton tools. The authors discuss the ways to identify and to correct these errors, under specific conditions. They present graphic examples of recording errors and the effects of their elimination. Examples of applying corrected standardized logs in petrophysical quantitative analysis involving determination of mineral composition, porosity and water saturation are provided by the authors. It is their opinion that the results of such analysis make it possible to generate reliable synthetic (theoretical) logs of density and interval transit time, which are useful input data in solving various geological problems related to hydrocarbon exploration, production and storage, to geothermal energy sources and many other issues.

Keywords


well logging, incomplete data, calibration of radiometric logs, well log correction, petrophysical quantitative analysis, synthetic logs

Full Text:

PDF

References


Bała M., Czopek B., Jarzyna J., Nowak J. & Wawrzyniak K., 2010. Interpretacja litologiczno-złożowa utworów czerwonego spągowca w reperowych otworach wiertniczych. W: Górecki W. et al., Dokumentacja projektu pt. „Poprawa efektywności badań sejsmicznych w poszukiwaniach i rozpoznawaniu złóż gazu ziemnego w utworach czerwonego spągowca”, WGGiOŚ AGH, KSE.

Halliburton Log Interpretation Charts, 1994, Halliburton Energy Services, Houston, Texas, USA.

Log Interpretation. Volume 1: Principles, 1974, Schlumberger Limited, Madison.

Serra O., 1984. Fundamentals of Well-Log Interpretation. Elsevier, Amsterdam – Oxford – New York – Tokio.




DOI: https://doi.org/10.7494/geol.2011.37.4.517

Refbacks

  • There are currently no refbacks.