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Lubrication

Pumping units should be given periodic lubrication and maintenance checks. When they are subjected to heavy variable loads, extreme...

Over the years there have been several methods of calculating the structural rating and the gear reducer rating of a pumping unit;...

One of the most important aspects of torque loading on a gear reducer is the level of counterbalance. Technical Data used in the field...

There are many variables that affect the loading on the sucker rod string and pumping unit. Some of these variables are listed. Technical...

Some crank balanced units are manufactured with the gear reducer shifted from a position directly underneath the equalizer to a position...

The conventional crank balanced pumping unit is the type most commonly used today, especially in the short and medium stroke lengths....

In selecting pumping equipment for oil wells remember that in a majority of cases some of the constituents of the fluid being pumped are...

There are many other special types of subsurface pumps for use in special problem situations. Technical Data used in the field explained...

This type of pump is illustrated in Fig. 8.8 and gets its name from the three tubes used in its construction. Technical Data used in the...

Common arrangements of two valves in series used both as traveling valves and as standing valves. Technical Data used in the field...