In-situ formation strength testing with formation sampling

a technology of in-situ formation strength and sampling, applied in the direction of seismology for waterlogging, borehole/well accessories, instruments, etc., can solve the problems of inability to accurately reflect actual conditions, and the inability of downhole fluid tests to provide information relating to formation direction and other rock properties

Inactive Publication Date: 2009-06-25
BAKER HUGHES INC
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  • Abstract
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  • Application Information

AI Technical Summary

Benefits of technology

[0008]The following presents a general summary of several aspects of the disclosure in order to provide a basic understanding of at least some aspects of the disclosure. This summary is not an extensive overview of the disclosure. It is not intended to identify key or critical elements of the disclosure or to delineate the scope of the claims. The following summary merely presents some concepts of the disclosure in a general form as a prelude to the more detailed description that follows.
[0009]Disclosed is an apparatus for estimating a property. The apparatus may include a formation evaluation tool conveyable to a formation evaluation location, and a formation strength test device having a member that engages a borehole wall substantially adjacent the formation evaluation location for estimating the property.
[0010]In one aspect, an apparatus for estimating a property

Problems solved by technology

These recreated conditions may not accurately reflect actual in-situ conditions and the core and fluid samples may have undergone irreversible changes in transit from

Method used

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  • In-situ formation strength testing with formation sampling
  • In-situ formation strength testing with formation sampling
  • In-situ formation strength testing with formation sampling

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Embodiment Construction

[0022]With reference to FIG. 1, a non-limiting example of a well logging apparatus 100 according to several embodiments of the disclosure will be described. The well logging apparatus 100 is shown disposed in a well borehole 102 penetrating earth formations 104 for making measurements of properties of the earth formations 104. The borehole 102 is typically filled with a fluid having a density sufficient to prevent formation fluid influx.

[0023]A string of logging tools, or simply, tool string 106 is shown lowered into the well borehole 102 by an armored electrical cable 108. The cable 108 can be spooled and unspooled from a winch or drum 110. The tool string 106 may be configured to convey information signals to surface equipment 112 by an electrical conductor and / or an optical fiber (not shown) forming part of the cable 108. The surface equipment 112 can include one part of a telemetry system 114 for communicating control signals and data signals to the tool string 106 and may furth...

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Abstract

A method and apparatus for estimating a property include evaluating a formation at a formation evaluation location using a formation evaluation tool, and estimating the property at least in part by engaging a borehole wall substantially adjacent the formation evaluation location with a formation strength test device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a non-provisional application of U.S. provisional application 60 / 990,521 filed on Nov. 27, 2007, the entire specification being hereby incorporated herein by reference.BACKGROUND[0002]1. Technical Field[0003]The present disclosure generally relates to wellbore tools and in particular to methods and apparatus for estimating formation properties.[0004]2. Background Information[0005]Oil and gas wells have been drilled at depths ranging from a few thousand feet to as deep as five miles. A large portion of the current drilling activity involves directional drilling that includes drilling boreholes deviated from vertical by a few degrees to horizontal boreholes, to increase the hydrocarbon production from earth formations.[0006]Information about the subterranean formations traversed by the borehole may be obtained by any number of techniques. Techniques used to obtain formation information include obtaining one or mor...

Claims

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Application Information

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IPC IPC(8): E21B49/00
CPCE21B49/10E21B49/006
Inventor TCHAKAROV, BORISLAV J.HUNZIKER, JAMES C.PHAN, QUAN V.AZEEMUDDIN, MOHAMMEDONG, SEE H.
Owner BAKER HUGHES INC
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