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Load reduction device for deep well pumping systems and pumping system comprising said device

A technology of load reduction, pump system, applied in transmissions, friction transmissions, pumps with flexible working elements, etc., can solve the problems of difficult plunger descending, insufficient transmission, and impossible to achieve operation, and achieves the elimination of major limitations Effect

Inactive Publication Date: 2017-04-19
保罗马丁游里欧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Many of the mechanisms described in the above documents have only one gear stage, which is not sufficient to transmit the power required to produce oil for the subsurface pump, and thus may be difficult or impossible to achieve proper operation
Another common problem is that there is no settling rod between the pump and the unit, forcing their parts to work under compressive loads when said parts cannot take this load, and it can also make the plunger during the downstroke The drop is difficult or hinders the drop of the plunger, resulting in production problems

Method used

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  • Load reduction device for deep well pumping systems and pumping system comprising said device
  • Load reduction device for deep well pumping systems and pumping system comprising said device
  • Load reduction device for deep well pumping systems and pumping system comprising said device

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Embodiment Construction

[0049] exist Figure 1A A schematic diagram of a deep well 1 is shown in , in this case a well operated by a conventional sucker rod pump system. A deep well 1 extends from a surface 2 to a desired depth. Install well casing 3. Production tubing or tubing 5 , which may comprise conventional tubing and / or coiled tubing, extends within casing 3 from surface 2 to a desired depth. The underground pump 4 is attached to the pipeline 5 at the desired depth. The subsurface pump 4 is typically coupled to a set of settling rods 7 which in turn are coupled to a sucker rod string 6 which extends to the surface 2 to pass through a stuffing box 8 . The settling rod 7 is generally similar to but heavier than a sucker rod. A sucker rod string 6 is coupled to a pump unit 9 on which reciprocating motion is generated. The sucker rod string 6 is the driving source, and transmits mechanical power to the plunger 4 of the underground pump in the form of reciprocating motion, so as to pump fluid....

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Abstract

A load reduction device (10) for a deep well (1) pumping system, which is driven by a sucker rod string (6) with reciprocating motion and drives a subsurface pump (4); and a deep well (1) pumping system comprising said load reduction device (10). Where said load reduction device (10) has a reduction ratio which defines how much the loads acting on said sucker rod string (6) are reduced; and comprises a speed reducer (13) of which several preferred embodiments are described.

Description

technical field [0001] The present invention relates to a load reducing device for a deep well pump system and a deep well pump system comprising said load reducing device. The pump system is used for pumping fluids from a well, such as water and / or hydrocarbons from a subterranean formation or reservoir, and is preferably applied to an oil well. Background technique [0002] Sucker rod pumps are the most widely used artificial lift systems worldwide for pumping water and / or hydrocarbons from subterranean formations or reservoirs. The system mainly includes a pump unit that converts the rotational motion of the motor into a reciprocating motion, and a sucker rod string that transmits the reciprocating motion generated by the pump unit to a subterranean pump located at the bottom of the well. The high loads that the sucker rod string has to bear make it really heavy, in some cases exceeding the weight of 10 tons in deep wells, and often becomes heavier than the fluid column ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B17/10F04B47/02
CPCE21B17/1071E21B43/127F04B47/02F04B47/026F16H19/003F16H19/04
Inventor 保罗·马丁·游里欧
Owner 保罗马丁游里欧