r-% 



_ WORKING BARREL SWAGED SECTION 

 6-5/8" O.D. FOR ELEVATORS 



V- 



TOOL JOINT BOX CONNECTION 

 AS SPECIFIED 



VENT SUB AND SPIDER 



PACKING RING 

 STUFF ING BOX 



STRAINER BODY 

 BALL SEAT 

 STRA(NER CAP 



;— WORK ING BARREL 



WORKING BARREL 



INNER BARREL LOWER SECTION 



HARD FORVIATION CUTTER HEAD 



UPPER CORE CATCHER 

 LOWER CORE CATCHER 



Figure 314. Conventional rotary core barrel. 



