Special Pumps

There are many other special types of subsurface pumps for use in special problem situations. Technical Data used in the field explained in petroleum courses in Rawalpindi. Most of these are considered “non-API” pumps, although they may use some parts that meet API specifications in their construction. One special pump is the casing pump, which is designed to be inserted directly into the casing without a string of tubing. Such pumps are set in the casing on a packer or casing anchor that grips the casing and holds the pump in position.

Such pumps are limited in size only by the casing size and can be made to have a very large capacity in relatively shallow wells. However, with this arrangement, all the gas produced with the well fluid must pass through the pump, and this may seriously limit the effective capacity in wells producing large quantities of gas. Some more details of petroleum courses in rawalpindi are as under.

Another special type of pump that is used to some extent  is an arrangement where two displacing  plungers are designed to act in series. This increases the displacement of a pump that will run in a given size of tubing and at a given stroke length. Another variation of this concept uses two valves and seats in the lower plunger and none in the upper plunger. This allows a fluid load on the lower plunger at all times and assists the sucker rods in falling on the down stroke. which is desirable for the more viscous fluids.

Fluids with large amounts of gas can cause gas locking or at least reduced flow because of expansion of gas in the chamber between the plunger and the standing valve  on the upstroke. This situation can sometimes be relieved by a special pump having two so-called compression chambers that serve to increase the compression ratio in those chambers above that normally obtainable in a standard pump. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join petroleum courses in islamabad.