GS 702: Well-site Geology and Formation Evaluation

Syllabus​

Duties of a well-site geologist. Geotechnical order. Coring and core analysis. Examination of well cuttings. Preparation of lithologs. Drill time logging, mud logging. Detection of oil and well logging. Preparation of composite logs. Principles of formation testing. Well completion, well acidisation, velocity shooting and fracturing. Concept of formation evaluation and log interpretation. Response of logging tools and borehole effect on log measurements. Logging practices, log quality control and environmental correction on well log measurements. Lithology plots. Saturation, irreducible saturation and permeability studies from well logs. Shaly sand analysis. Cementing quality monitoring. Constant bottomhole pressure tests. Practical aspects of design and performance of field tests. Analysis of transient pressure data, effects of boundaries, reservoir heterogeneity, multiphase flow. Study of production, DST and formation interval tests. Pulse testing and multiwell tests. 

Texts/References

  • Darling, T. Well Logging and Formation Evaluation, Elsevier Science, Amsterdam, 2005
  • Gupta, P.K. and Nandi, P.K. Wellsite Geological Techniques and Formation Evaluation: A User’s Manual, Vol. I, Oil and Natural Gas Corporation, Dehra Dun, 1995
  • Ransom, R.C. Practical Formation Evaluation, John Wiley & Sons, New York, 1995
  • Sahay, B., Rai, A. and Ghosh, M. Wellsite Geological Techniques for Petroleum Exploration, Oxford & IBH, New Delhi, 1984
  • Whittaker, A. Mud Logging Handbook, Prentice-Hall, Englewood Cliffs, 1991