Sucker Rod Pumps
Sucker Rod method is one type of Artificial lift method which we used lift oil from bottom hole to surface with the help of mechanical energy. It is efficient, simple and easy for the technicians to operate on field. It can pump. A well down to very low pressure to maximize oil production rate. This method is applicable to slim holes, multiple completions, high temperature and viscous oils. This system is also easy to change to other wells at a minimum cost.
Sucker rod pumping system consists of a pumping unit at surface and a plunger pump submerged in the production liquid in well. The prime mover is either an electric motor or an internal combustion engine. The power from the prime mover is transmitted to the input shaft of a gear reducer by a V-Belt drive. The output shaft of the gear reducer drives the crank arm at lower speed. The rotary motion of the crank arm is converted to an oscillatory motion by means of the walking beam through a Pittman arm. The horse's head and the hanger cable arrangement is used to ensure that the upward pull on the sucker rod string is vertical at all times. Thus, no bending moment is applied to the stuffing box. The polished rod and stuffing box combine to maintain a good liquid seal at the surface. Thus, force fluid to flow into the “T” connection just below the stuffing box.
Conventional pumping units are available in a wide range of sizes, with stroke lengths varying from 12 to almost 200 in. The strokes for any pumping unit type are available in increments. Walking beam ratings are available in allowable polished rod loads and vary from approximately 3,000 to 35,000 lb. Counterbalance for conventional pumping unit is accomplished by placing weight directly on the beam or by attaching weight to rotating crank arm.
The major disadvantages of beam pumping include excessive friction in crooked/deviated holes, solid sensitive problems, low efficiency in gassy wells, limited depth due to rod capacity and bulky in offshore operation.Beam pumping trends include improved pump-off controllers, better gas separation, gas handling pumps and optimization using surface and bottom hole cards.
Sucker Road Pumps and Its different parts:-
Notes:- Data is collect from different university notes and experience basic. Main purpose is to help peoples.
Article Written By
Raktim Ranjan Borah
Vice President & Event Organizer
Petroleumbuddy websites and Initiatives
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