98-07_drilling-mojarro-fig2.html (Jul-1998)

Fig. 2. Configuration and principal performance features of Hydril's Type 533 Wedge Thread connection. Descriptions of the noted features are shown below. Dimensions and performance data are listed in World Oil's 1998 Tubing reference tables, January 1998, pg. 108.

A 100% pipe body ratings for tension and bending by machining pin / box on hot-forged internal-external upset.

B 1) High-torque strength through simultaneous engagement of opposing dovetail thread flanks; 2) Positive torque stop virtually eliminates pin-end ID restrictions; 3) Coarse pitch thread, steep taper for deep stabbing increases durability; 4) 100% compression rating from reverse-angle stab flank.

C Stress distribution, low stress levels make connection suitable for sour service.

D Pipe body collapse strength created with lubricant seal of dovetail threads.

E 100% rated metal-metal seal maintains gas seal during high axial, bending loads.

F Flow stream continuity with recess-free ID. Minimizes erosion-corrosion from turbulence.

G Streamlined OD facilitates running pulling, circulating. Prevents coupling face hang-up.

H Corrosion protection provided by optional recessed inert CB ring.