Sucker rod pumps with side openings in the cylinder mute HYDRAULIC drain valve, single plunger and increase the stroke length

摘要

The proposed utility model relates to the oil industry and can be used in the arrangement of downhole sucker rod pumping units (SSHNU), namely when used in the composition of well sucker rod pumping units sucker rod pump piping structure. As a prototype (patent №2144623 publ. 20.01.2000 city). An object of this utility model is to increase reliability and efficiency of operation of downhole pumping equipment, and also increase the operational capabilities of sucker rod pump by extending the range of the maximum possible stroke length of sucker rod pump with maximum use of standardized parts and assemblies. This object is achieved by changing the design known sucker rod pump piping structure by using a hydraulic drain valve installed on the sucker rod pump in the location of the lateral drain hole such that the rupture element hydraulic drain device located coaxially with the lateral drain hole, and by using an additional extension nozzle, which connecting element between the suction valve and a lower LAC initelnym pipe sucker rod pump. The proposed design change sucker rod pump with a lateral drain hole in the cylinder will prevent jamming pair "cylinder-plunger" sucker rod pump due to ingress of mechanical particles in the gap pair "cylinder-plunger" from the annulus through the lateral opening in the cylinder, also prevents fluid leakage through a lateral discharge outlet during operation of sucker rod pump in the well, which will thus increase the delivery rate of sucker rod of the pump. Also, it will provide; the possibility of a preliminary pressure test sucker rod pump assembly in a condition of repair bases SAP before shipping sucker rod pumps at the well, which will reject or parts cylinder SRP does not provide the necessary tightness SRP, thus preventing ingress of defective downhole pumping equipment in the well and eliminating the need for repeated underground repairs to replace the defective downhole pumping equipment. However, the sucker rod pump of the proposed design provides a significantly greater maximum possible stroke length of the plunger sucker rod pump in operation in the well compared to the prior art. This will optimize the operation modes of the downhole pump and surface equipment by increasing the stroke length of the polished rod pumping unit and to reduce the amounts of double strokes polished rod per unit of time, which reduces the speed of the column wear of sucker rods, a pair of "cylinder-plunger" sucker rod pump and surface equipment at a constant production rate of the well. It will also enable to increase oil production by increasing the stroke length of the polished rod at a constant number of double strokes polished rod pumping unit per unit time, thus increasing the operational capabilities SSHNU, as well as using the hydraulic drain valve, to prevent environmental pollution during workover well.