Shandong Yukos Petroleum Equipment Co., Ltd.,mainly engaged in the management, research and development of petroleum drilling and well repair equipment, special oilfield equipment, oil extraction equipment, wellhead and down hole tools, and the provision of petroleum engineering design schemes and petroleum engineering technical services.
Here to introduce the pumping oil pump,as follows:
Tubular pump, also known as tubing pump,that is characterized by the outer cylinder, bushings and suction valve in the ground assembled and connected to the lower part of the tubing into the first well, and then equipped with a discharge valve with a sucker rod through the tub down into the pump .
The bushing is made of material into several sections and is inserted into the interior of the outer cylinder. The piston is a hollow cylinder made of seamless steel pipe, the outer surface is smooth with a ring groove, the role is to enter the piston and bushing gap between the sand gathered in the groove to prevent the sand wear the piston and bush, and the groove The oil stored in the tank acts as a lubricant piston.
Check the pump when the pump is to drain the oil in the tubing, can be salvaged suction valve (fixed valve), through the lower pole, so that the bottom of the piston buckle bite the suction valve salvage head, the suction valve. However, this pump as a result of the suction valve to occupy the pump inside the pump space, so that the pump anti-offset and clearance volume, susceptible to the impact of gas and reduce pump efficiency. At present, most of the downhole pump wells are installed in the lower part of the tuber, by opening the drain to remove the oil in the tubing. In the well into the large pump wells, because the piston diameter is greater than the diameter of the tubing, can not pass into the piston through the tubing, the method is to first with the tubing into the well, then into the sucker rod, the use of a device called the disconnector Piston with the piston in the pump.
Tubular pump structure is simple, low cost, in the same tubing diameter under the allowable into the pump diameter than the rod pump, and thus large displacement. But the pump must be under the tubing, workover workload, it is suitable for the pump under the depth of the small, high yield wells.
Rod-type pumping pump, also known as the insertion of the pump, which fixed the top of the fixed-type rod-type pump is characterized by two internal and external cylinder, the top of the external tube with a vertebral body and the reed (the position of the next card is the pump depth) , The pump under the pump when the outer tube with the first tube into the well, and then equipped with a bushing, the piston inside the working tube connected to the lower end of the sucker rod into the outer cylinder and fixed by the retainer. In addition there is a fixed point in the bottom of the cylinder at the bottom of the fixed-type fixed rod-type pump, and the piston fixed at the bottom, driven by the sucker rod reciprocating movement of the cylinder-type bottom fixed rod pump.
Check the pump does not need to start up the tubing, but through the sucker rod to pull out the work cylinder. Rod pump is convenient, but the structure is complex, the manufacturing cost is high, in the same tubing diameter to allow the lower diameter of the pump to be small, suitable for the pump under the depth of the larger, smaller oil wells.
At present, conventional pumping pumps have the disadvantages of high metal punch and bushing processing, inconvenience and easy to wear.