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Sensing cavitation-related events in artificial lift systems

a technology of artificial lifts and events, applied in the field of sensing cavitation-related events in artificial lifts, can solve problems such as cavitation damage to the throa

Inactive Publication Date: 2017-03-16
WEATHERFORD TECH HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a method and system for detecting and adjusting an artificial lift system in a wellbore to prevent damage caused by cavitation. A sensor can detect indications of an event associated with cavitation, such as acoustic or vibrational indications, and the system can adjust parameters of the artificial lift system accordingly to prevent damage. The sensor can be positioned at the wellhead or in the wellbore, and the adjustments can include adjusting the pump speed, the fluid flow, or the power output.

Problems solved by technology

Cavitation damage may occur to the throat.

Method used

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  • Sensing cavitation-related events in artificial lift systems
  • Sensing cavitation-related events in artificial lift systems
  • Sensing cavitation-related events in artificial lift systems

Examples

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Embodiment Construction

[0028]Certain aspects of the disclosure provide techniques and apparatus for monitoring a wellbore for an indication of an event associated with cavitation in an artificial lift system and adjusting at least one parameter of the artificial lift system if the event is detected.

[0029]FIG. 1 is a conceptual illustration of an example artificial lift system 100. The artificial lift system 100 includes a wellhead 102 coupled to production tubing 104 disposed downhole in a wellbore 114 and surface machinery 106, generally located at the surface of the wellbore. A downhole fluid pump 110 may be disposed in the production tubing 104 in a downhole portion 116 of the artificial lift system 100, while at the surface, a surface controller 107 and a power fluid pump 112 may be coupled to the wellhead 102. The power fluid pump 112 may force power fluid down the production tubing 104, and, in response, the downhole fluid pump 110 may force hydrocarbons back up the tubing 104 towards the surface.

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PUM

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Abstract

Methods and apparatus are provided for sensing a cavitation-related event in an artificial lift system for hydrocarbon production and operating the system based on the sensed event. One example method of operating an artificial lift system for a wellbore generally includes monitoring the wellbore for an indication (e.g., an acoustic or vibrational indication) of an event associated with cavitation in the artificial lift system and adjusting at least one parameter of the artificial lift system if the event is detected. One example system for hydrocarbon production generally includes an artificial lift system for a wellbore and at least one sensor configured to detect an indication of an event associated with cavitation in the artificial lift system.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present Application for Patent claims priority to U.S. Provisional Application No. 62 / 216,812, filed Sep. 10, 2015, which is assigned to the assignee of the present application and hereby expressly incorporated by reference herein in its entirety.BACKGROUND[0002]Field of the Disclosure[0003]Certain aspects of the present disclosure generally relate to hydrocarbon production using artificial lift and, more particularly, to sensing an event associated with cavitation in an artificial lift system.[0004]Description of the Related Art[0005]Several artificial lift techniques are currently available to initiate and / or increase hydrocarbon production from drilled wells. These artificial lift techniques include rod pumping, plunger lift, gas lift, hydraulic lift, progressing cavity pumping, and electric submersible pumping, for example.[0006]Sensors are often used to monitor various aspects when operating artificial lift systems. For example, ...

Claims

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Application Information

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IPC IPC(8): E21B47/12E21B43/12E21B47/00
CPCE21B47/12E21B43/126E21B47/0007E21B43/124E21B47/008
Inventor AGARWAL, MANISHMOFFETT, ROSS E.KNOELLER, MICHAEL C.PUGH, TOBYPAULET, BRYAN A.
Owner WEATHERFORD TECH HLDG LLC
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