VELOCITY IN 

 THOUSANDS FT/SEC 



CONTINUOUS 

 VELOCITY LOGS 



HOGSHOOTER 



CHECKERBOARD 



LOGAN AND POTTAWATOMIE 

 COUNTIES, OKLAHOMA 



OSWEGO 



WOODFORD ..i 



HUNTON d o J 



ssofl -SYLVAN 



VIOLA 



Figure 21-11. Velocity log correlations, central Oklahoma. 



These logs are referred to a sea-level datum and show the relative structural 

 position of the wells. The correlations of the Niobrara, Fort Hays, Carlile, and 

 "D" and "J" sands are clearly demonstrated. The distance between Wells 1 and 

 3 is 25 miles. 



Figure 21-10 shows velocity logs of three field wells in Andrews County, 

 West Texas, and indicates the good correlative characteristics of the horizons 

 from the Pennsylvanian Strawn to the Devonian. Figures 21-11 and 21-12 show 



2 I CONTINUOUS VELOCITY LOGS 



velocity thousands^ GARV)N ^jy, OKLAHOMA 



3200 



<<J 



^ 



CHECKERBOARD 

 ABERNATHY 

 FIRST DEESE 



BASE PENN/TOP VIOLA 



Figure 21-12. Velocity log correlations, southern Oklahoma. 



418 



