Soft-Packed Plungers

the cup- and ring-type plungers. The left side shows composition-formed cups used to seal the plunger against the barrel. Technical Data used in the field explained in petroleum courses in Rawalpindi. The right side shows composition rings (generally square or rectangular in shape) used for sealing. Some operators prefer a combination of both cups and rings on a single plunger.

The applications of such soft-packing arrangements generally are limited to shallow wells and to those where abrasive conditions  are not excessively severe. Where this type of plunger is satisfactory, it has the advantage of being easily and less expensively reconditioned with new cups or rings, and the flexible packing will compensate for considerable wear of the barrel as long as the barrel surface remains smooth. Some more details of petroleum courses in rawalpindi are as under.

Thus it is seen that a plunger pump may operate with acceptable efficiency in a well producing a highly viscous oil, whereas the same pump operated at the same speed and stroke may fail to deliver any oil to the surface when installed at the same depth in a well producing oil of low viscosity.

the type of ball-and-seat combination commonly used for check valves in subsurface pumps. Balls and seats are made in a variety of materials to resist extremely abrasive and corrosive conditions. API Standard 11 AX ’ lists the important dimensions of standard sizes along with the pump sizes with which they are commonly used. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join oil field after petroleum courses in islamabad.