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Hydraulically actuated reciprocating pump

A technology of hydraulic chamber and hydraulic fluid, applied in the field of reciprocating pump, can solve the problem of fatigue damage of drill string and other downhole components

Inactive Publication Date: 2016-01-20
NAT OILWELL VARCO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pressure pulsations can also cause fatigue damage to drill string tubing and other downhole components over time

Method used

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  • Hydraulically actuated reciprocating pump
  • Hydraulically actuated reciprocating pump
  • Hydraulically actuated reciprocating pump

Examples

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Embodiment Construction

[0032] The following description relates to an exemplary embodiment of a hydraulically driven reciprocating pump system. The disclosed embodiments should not be interpreted, or otherwise used, as limiting the scope of the disclosure, including the claims. Those skilled in the art will appreciate that the following description has broad application and that the discussion is meant to be an example of the described embodiments only, and is not intended to suggest that the scope of the present disclosure, including the claims, be limited to only those implementations discussed. example. For example, the pumps described herein may be employed in any fluid delivery system in which it is desirable to reduce turbulence in fluid contained within or moving through the system.

[0033] Certain terms are used throughout the following description and claims to refer to particular features or components. As those skilled in the art will understand, different people may refer to the same ...

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Abstract

A hydraulically driven reciprocating pump. In some embodiments, the pump includes: a housing including a hydraulic chamber; a cylinder coupled to the housing; a piston assembly adapted to reciprocate within the housing and cylinder, the piston assembly transferring the hydraulic pressure a chamber separated into three subchambers; and a hydraulic system fluidly coupled to each of the subchambers. the hydraulic system is actuatable to deliver hydraulic fluid to a first of the subchambers whereby the piston assembly is flushed back and working fluid is drawn into the cylinder, actuatable to deliver hydraulic fluid to a second of the subchambers, Thereby the piston assembly is flushed out and the working fluid is expelled from the cylinder, and is actuatable to adjust the volume of hydraulic fluid in a third of the sub-chambers so that the piston assembly translates to bring the pressure of the working fluid in the cylinder into a preselected In the range.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Nonprovisional Application Serial No. 12 / 787,476, filed May 26, 2010, and entitled "Hydraulically Actuated Reciprocating Pump." technical field [0003] The present disclosure generally relates to a reciprocating pump. More specifically, the present disclosure relates to a hydraulically actuated reciprocating pump having a piston driven to reciprocate within a cylinder by fluid pressure. The present disclosure also relates to systems and methods for reducing pressure pulsations within a pump created by reciprocation of a piston within a cylinder. Background technique [0004] To form an oil or gas well, a bottom hole assembly (BHA) including a drill bit is coupled to a length of drill pipe to form a drill string. The drill string is then inserted downhole where drilling takes place. During drilling, fluid or "drilling mud" is circulated down the drill string to lubricate and co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B9/08F04B13/00F04B39/12F04B39/00
CPCF04B9/1035F04B15/02F04B47/08
Inventor 阿德里安·马里卡
Owner NAT OILWELL VARCO LP