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1.1 Analysis of Pump Inspection Causes: Casing failure has produced the biggest number of Deep-Well Sucker Rod Pump issues which lead to more than 50% of all pump inspections. Among these, the major causes are the broken traveling valve cover, pump leakage, and the bleeder problems. The traveling valve cover is the one that connects the sucker rod and the Sucker Rod Pump and at the same time assures that liquid is pumped out from the piston. The upward pull of the sucker rod, the weight of the sucker rod itself, and the friction between the pump barrel and the piston are the factors that the cover faces during production.

Deep-well sucker rod pump is a mechanical oil production equipment used for deep well oil extraction, which is a core component of the rod pump oil production system. Anti gas sucker rod pump is a pumping equipment specifically designed for gas-bearing wells, mainly used to reduce or avoid the impact of gas on pumping efficiency. So do you know the difference between them?

Ⅰ.The use of rod pumps to pump oil is the core method of oilfield mechanical oil recovery： In oilfield development, when the oil well cannot be self-injected due to insufficient formation energy, thick crude oil, etc., or the output is too low, it is necessary to use mechanical energy to recover oil. At present, the main mechanical oil recovery methods we use include gas lift oil recovery and deep well oil sucker rod pump oil recovery, and rod pump pumping is one of the important types of deep well oil sucker rod pump oil recovery. With the advantages of simple structure and easy maintenance, it is most widely used in oil fields around the world, especially in shallow and medium-sized oil wells.

Ⅰ. The structure of deep well oil sucker rod pump： Pumping rod pump is also called deep well rod pump. Our deep well oil sucker rod pump is a special equipment for mechanical oil recovery with rod pump.Under the pump, it is at a certain depth below the moving liquid level in the well shaft, and relies on the sucker rod to transmit the power of the sucker to extract the crude oil from the ground. Deep well oil sucker rod pump is divided into combined pumps and whole cylinder pumps according to whether there is a bushing or not. The working cylinder of the combined deep well oil sucker rod pump has several bushings, and it is pressed by the upper and lower compression joints; the working cylinder of the whole pump is a seamless steel pipe without a bushing inside. Deep well oil sucker rod pump is divided into two types: tubular pump and rod pump according to its installation method and structure in the well.

1. Description of the problem： When the pumping well is abnormal during the production process, it is necessary to perform maintenance inspection of the deep well oil well pump. Due to scaling, the piston of some operating oil wells is stuck in the pump barrel of the deep well oil well pump, which makes it difficult to lift it during the well repair operation. At this time, it is necessary to reverse the rod pipe. The reverse rod is reversed by 2-3 operators using pipe pliers at the wellhead. The operation is very dangerous and there have been many injuries in the past. Through on-site observation and research, the sucker rod reverser is made.

There are many factors that affect pump efficiency, but from the three basic links of the deep-well sucker rod pump (the piston gives up volume, crude oil enters the pump and is discharged from the pump), it can be summarized into the following three aspects.