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System and method for estimating velocity of a downhole component

a technology of downhole component and system, applied in the field of system and method for estimating the velocity of downhole components, can solve problems such as the ability to assess the actual rop, and achieve the effect of improving the accuracy of rop estimation

Inactive Publication Date: 2010-12-02
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such average ROP measurements may compromise the ability to assess the actual ROP at any given moment and location during drilling.

Method used

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  • System and method for estimating velocity of a downhole component
  • System and method for estimating velocity of a downhole component
  • System and method for estimating velocity of a downhole component

Examples

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Embodiment Construction

[0012]Referring to FIG. 1, an exemplary embodiment of a well drilling and / or geosteering system 10 includes a drillstring 11 that is shown disposed in a borehole 12 that penetrates at least one earth formation during a drilling operation and makes measurements of properties of the formation and / or the borehole 12 downhole. In one embodiment, such measurements are of a movement of components within the borehole, such as the velocity of a drill bit. The velocity, in one embodiment, is related to the drill bit's rate of penetration (ROP), which can be measured by various sensors in the system 10. The system includes a sensor assembly having at least one sensor configured to measure position and / or acceleration of the drill bit or other component, and at least one circuit in communication with the at least one sensor. The at least one circuit is configured to a receive a signal from the sensor and generate a signal representative of an instantaneous velocity of the component.

[0013]In on...

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PUM

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Abstract

A system for estimating a velocity of a downhole component is disclosed. The system includes: a sensor configured to produce a sensor signal that is proportional to at least one of a position and an acceleration of the downhole component; and a circuit in communication with the sensor and configured to receive the sensor signal and generate an output signal indicative of an instantaneous velocity of the downhole component. A method of estimating a velocity of a downhole component is also disclosed.

Description

BACKGROUND[0001]In hydrocarbon exploration operations, well boreholes are drilled by rotating a drill bit attached to a drillstring, and may be bored vertically or bored in selected directions via geosteering operations. Various downhole devices located in a bottomhole assembly or other locations along the drillstring measure operating parameters and formation characteristics, and include sensors for determining the presence of hydrocarbons.[0002]Various drilling parameters are monitored during drilling operations to assess the progress of a drilling operation and the performance of a drill bit. A drill bit's rate of penetration (ROP) is a significant parameter measured to monitor drilling progress as well as the presence of formation materials that affect the drilling performance and degradation of the drill bit. ROP is generally measured as an average over a selected period of time. Such average ROP measurements may compromise the ability to assess the actual ROP at any given mome...

Claims

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Application Information

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IPC IPC(8): E21B47/00
CPCE21B47/04E21B45/00
Inventor TRINH, TU TIENSULLIVAN, ERIC
Owner BAKER HUGHES INC