I*. 



SPLINE 



SPEARHEAD 

 - KEY 



SPEARHEAD 



LATCH GROOVES 



LATCH DOG 

 ALIGNMENT PIN 



FLUID PORT DRILL COLLAR 

 (BODY) 



SEAL 



LOCKING 

 > SWIVEL 



CORE BARREL 

 ASSEMBLY 



ALIGNMENT CAM 

 ( MULESHOE ) 



WHIPSTOCK CORE CUTTER 

 8 BARREL 



POSITIONING 

 SPRING 



UNIVERSAL 

 JOINTS 



SWIVEL JOINT 



HINGED 



DEFLECTOR PLATE -r 



8 SHOCK ABSORBER 



DEFLECTOR PLATE 

 CORE BARREL 



CORE BIT 



WHIPSTOCK RIB 



DRILLING BLADES 



Figure 33-5. Rotary sidewall coring 

 tool (Courtesy A-l Bit and Tool 

 Company) . 



Figure 33-6. Wire line sidewall sampler 

 (punch core) (Courtesy Houston 

 Oilfields Material Company) . 



