Subsurface Laboratory Methods 



295 



CORE ANALYSIS— PREDICTING WELL BEHAVIOR 

 JOHN G. CARAN 



Core analysis has proved a valuable aid in the successful exploration, 

 exploitation, and evaluation of gas and oil reserves. The basic core data 

 make possible the location of fluid contacts and the prediction of the type 

 of production to be expected. 



It is readily admitted that core analysis is but one of the useful tools 



Figure 122. Core-log of well A. 



available to the modern completion engineer. The use of core data, to- 

 gether with a knowledge of the structural position of the well, the study 

 of electric logs, and comprehensive drill-stem testing, minimizes the possi- 

 bility of completing a dry hole or missing a productive formation. 



