CN2217121Y - Relay type rod deep well pump - Google Patents

Abstract

The utility model discloses a relay type rod deep well pump relating to a deep well pump with a rod conducting mechanical petroleum production with the mutual cooperation of a petroleum pumping machine. The utility model is composed of a pump cylinder, a petroleum inlet connector, a petroleum outlet connector and a sealing ball. The pump cylinder is in a cylinder shape whose two ends are provided with openings. The petroleum inlet connector and the petroleum outlet connector are respectively arranged on the two ends of the pump cylinder and are respectively provided with a petroleum inlet and a petroleum outlet. The sealing ball is arranged in the inner ball seat of the pump cylinder. When the petroleum pumping machine drives the deep well pump to downward move, the sealing ball leaves the ball seat. The petroleum enters into an annular space between a pump rod and a petroleum pipe by the passage of the deep well pump. When the deep well pump upward moves, the sealing ball blocks the passage of the well pump to complete the process of petroleum pumping and petroleum discharging at one time. The utility model has simple structure and can realize the installation of multistage relay.

Description

Relay-type has the bar deep-well pump

The utility model relate to a kind of in petroleum production, be installed in the TUBE IN DEEP WELL and with pumping unit work in coordination carry out mechanical oil recovery the bar deep-well pump arranged.

It is two kinds of the most frequently used in petroleum production oil production technology that mechanical oil recovery and gusher recover the oil, and wherein the application of mechanical oil production technology is more general, and China all adopts mechanical oil recovery in the oil field more than 85%.In the prior art, mechanical oil recovery is to utilize the pumping unit and the deep-well pump of working in coordination to carry out, and deep-well pump is installed in the centre of TUBE IN DEEP WELL, and pumping unit then places ground and drives the deep-well pump running.Deep-well pump can be divided into bar deep-well pump and no bar deep-well pump two big classes, there is the bar deep-well pump mainly to constitute by cylinder sleeve and the piston that is installed in the cylinder sleeve, when utilization has bar deep-well pump and pumping unit to carry out mechanical oil recovery, pumping unit drives the deep-well pump piston by the more piece pump rod that links together and pumps in cylinder sleeve, with annular space between oil suction pump rod and oil pipe and discharge ground.This pattern bar deep-well pump structure more complicated arranged, the leakage of piston and bottom valve is very big to the pumping efficiency influence of deep-well pump, therefore relatively strict to the manufacturing required precision of deep-well pump, cost is also than higher.Because the restriction of structure, the deep-well pump of above-mentioned pattern can only the single-stage installation and operation, thereby poor to the adaptability of oil reservoir.In addition, for the deep-well pump of this structural type, the phenomenon of silt holddown is also quite outstanding, shortened the operation period of deep-well pump greatly, and pump, inspection pump and replacing accessory bother very down, must play oil outlet tube, not only time-consuming but also require great effort, have a strong impact on oil recovery efficiency.

The purpose of this utility model promptly is the suitable in addition improvement of bar deep-well pump structure is arranged, to simplify its structure and process for machining and manufacturing, reduce cost, simultaneously, make the deep-well pump can multistage relay installation and operation, with the adaptability of enhancing, and installation, maintenance and the replacing accessory of deep-well pump are more just made, thereby improve oil recovery efficiency oil reservoir.

To achieve these goals, the utility model connects fuel inlet fitting and the delivery connection that has oil inlet hole and oil outlet and be connected the spiral shell button respectively at the two ends of cylindrical shape pump barrel, and utilize the ball sealer that is positioned in the pump barrel to seal automatically or open oil pumping passage, thereby constitute a kind of relay-type bar deep-well pump, is meanwhile arranged, cancel the cylinder sleeve of original deep-well pump and have the bar deep-well pump directly to place in the oil pipe and relay-type and work in coordination with tubing wall.When pumping unit drives deep-well pump when descending by pump rod, the ball sealer in the pump barrel makes the oil pumping channel opener, and oil enters annular space between pump rod and the oil pipe through the oil pumping passage, when deep-well pump is up, ball sealer makes the sealing of oil pumping passage, and oil is discharged ground, finishes the oil extraction process of once pumping.There is the technical characteristics of bar deep-well pump to be described in further detail below in conjunction with specific embodiment to the utility model relay-type.

Accompanying drawing 1 has the structural representation of bar deep-well pump for the utility model relay-type.

With reference to the accompanying drawings 1, the utility model relay-type has the bar deep-well pump mainly by the pump letter, and fuel inlet fitting, delivery connection and ball sealer constitute.Pump letter 1 is the cylindrical shape of both ends open, is installed in the TUBE IN DEEP WELL, has the ball seat 2 that is used to place ball sealer in the tube.Fuel inlet fitting 3 is the cylindrical shape of upper end open, is installed in the lower end of pump barrel 1 and is communicated with pump barrel 1, has oil inlet hole 4 on its sidewall, and the bottom has the pin thread 5 that connects pump rod.Delivery connection 6 is the cylindrical shape of both ends open, the upper end of pump letter 1 is installed and is communicated with pump barrel 1, adopt 7 sealings of flexible glue circle between delivery connection and the pump barrel 1 and work in coordination with tube inner wall, its top has on the box 8 that connects pump rod, its sidewall and has oil outlet 9.Ball sealer 10 is a ball, is positioned over and also can makes pump barrel passage sealing or open in the ball seat 2 in the pump barrel 1.When pumping unit is descending by pump rod driving deep-well pump, ball sealer 10 in the pump barrel 1 leaves ball seat 2, the pump barrel channel opener, oil enters annular space between pump rod and the oil pipe when deep-well pump is up through pump letter passage, ball sealer 10 seals the pump barrel passage, oil is discharged from ground, finishes the oil extraction process of once pumping.According to the situation of oil reservoir, can utilize the connection spiral shell at deep-well pump two ends to be buckled in a plurality of deep-well pumps of serial connection on the pump rod, implement multistage relay

The utility model is simple in structure, and processing and manufacturing is easy. Lower pump, inspection pump and replacing are joined Part is convenient, need not flowline. The multi-stage relays of realizing move more, to the adaptability of oil reservoir By force. In addition, can effectively avoid silt holddown phenomenon, prolong the operation week of deep well pump Phase. Therefore, the utility model is particularly suitable for working in coordination with oil pumper and carries out mechanical oil recovery.

Claims (1)

1, a kind ofly be installed in petroleum production in the TUBE IN DEEP WELL and with the pumping unit relay-type that carries out mechanical oil recovery of working in coordination the bar deep-well pump arranged, it is characterized in that it is by pump barrel, fuel inlet fitting, delivery connection and ball sealer constitute; Pump barrel is the cylindrical shape of both ends open, be installed in the TUBE IN DEEP WELL, have the ball seat that is used to place ball sealer in the tube: fuel inlet fitting is the cylindrical shape of upper end open, be installed in the lower end of pump barrel and be communicated with pump barrel, have oil inlet hole on its sidewall, the bottom has and is used for the pin thread that is connected with pump rod: delivery connection is the cylindrical shape of both ends open, be installed in the upper end of pump barrel and be communicated with pump barrel, adopt the sealing of flexible glue circle between delivery connection and the pump barrel and work in coordination with tube inner wall, the top of delivery connection has the box that is used to connect pump rod, has oil outlet on its sidewall; Ball sealer is a ball, is positioned over and also can makes pump barrel passage sealing or open in the ball seat in the pump barrel.

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