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Apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole

A conductive fluid, fluid-filled technology, used in electrical/magnetic detection, measurement devices, and earth-moving drilling for logging records

Active Publication Date: 2010-09-22
SONDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a typical transmission link may have limited bandwidth on the order of 25kb / s to 100kb / s and is often shared with other instruments

Method used

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  • Apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole
  • Apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole
  • Apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole

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Embodiment Construction

[0021] In drilling applications, the data bandwidth between the downhole device and the surface may be limited, and the determination of water holdup based on downhole measurements may be data intensive. A technique for calculating water holdup is proposed, which requires less data to be transmitted between the downhole device and the surface.

[0022] Reference figure 2 According to a preferred embodiment of the present invention, a device for determining the concentration of conductive fluid in a fluid-filled borehole will now be described. Throughout the specification and claims, the terms "conductive fluid" and "substantially non-conductive fluid" will be used to denote water or water-like fluids on the one hand, and hydrocarbons or hydrocarbon-like fluids on the other hand. fluid.

[0023] figure 2 It is a side view of the water holding ratio meter 2. The instrument includes a central rod or mandrel 4 for connection with a downhole tool belt (not shown). A plurality of re...

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Abstract

An apparatus for determining the concentration of a conductive fluid present in a fluid filled bore hole is described. Such apparatus are known as water hold-up meters and are frequently used in oil, gas and water filled bore holes. In bore hole applications, data bandwidth between a down hole device and the surface can be limited, while determining water hold-up based on down hole measurements can be data intensive. A technique is proposed for calculating the water hold up that requires less data to be transmitted between the down hole device and the surface.

Description

Technical field [0001] The present invention relates to a device for determining the concentration of a conductive fluid present in a fluid-filled borehole, especially a device called a water holdup meter, which is used in oil, natural gas and water-filled boreholes . Background technique [0002] When drilling and extracting hydrocarbons such as oil and natural gas, water may also enter the well and flow into the borehole or drill pipe. It is desirable to understand the relative proportions of water and hydrocarbons in the well, so as to understand the output of the well, and make decisions about the operation and maintenance of the well. If the cross-section of the borehole perpendicular to the well axis is considered, the ratio of the cross-sectional area occupied by water to the total cross-sectional area is called the water holdup. The gas holdup or oil holdup can be calculated in a similar way. [0003] Water and hydrocarbons do not easily form a solution. In contrast, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/07G01N27/10G01N33/28E21B47/10
CPCG01N33/2823E21B47/102G01N27/07E21B47/113E21B47/12G01N27/048G01N27/06G01V3/34G01V3/38
Inventor G·H·马森J·A·古利弗D·G·海斯P·F·斯蒂尔K·汤金斯A·J·斯蒂芬斯
Owner SONDEX
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