10 Reasons Why You Should Log

 

10 Reasons Why You Should Log

 

1)     Geophysical logging provides ‘hard’ data on subsurface conditions

The equipment makes direct and indirect measurements of the properties of formations, fluids, and well materials in and around the borehole and/or well.  These measurements are objective and unaffected by human bias or error that influences visual descriptions of samples retrieved from the borehole. 

 

2)     Geophysical logging provides repeatable and comparable data

Because the physical properties measured by the geophysical equipment are repeatable (and comparable even when measured with different equipment), the logs provide foundation for consistent interpretation of subsurface conditions across a site.  They also promote interpretive continuity at sites that have had multiple investigations.

 

3)     Geophysical logging equipment ‘sees’ subsurface conditions not visible to the scientist/investigator

The equipment measures various physical properties (e.g., electrical conductivity, radioactivity, acoustic…) of earth and well materials surrounding the hole that are not physically observable, thus enhancing the diagnostic objective of the drilling effort.

 

4)     Geophysical logging ‘samples’ a larger volume of formation than can be sampled in a standard drilling program

Physical samples extracted from the borehole are limited in size to the diameter of the borehole.  Geophysical methods have the ability to look beyond the borehole wall, testing formation properties extending outward into the undisturbed formation.  This larger radius or volume of investigation increases the likelihood that the sample is an accurate representation of conditions at the drill site. 

 

5)     Geophysical logging equipment ‘samples’ formation properties in-situ

Geophysical methods test the properties of formations and their fluids surrounding the borehole in-situ, thus providing information that cannot be collected by drilling and sample extraction.

 

6)     Geophysical logging provides real-time data for fast decision-making

A Drilling Plan becomes a successful drilling effort when the bit reveals the true nature of subsurface conditions and the scientist/investigator is able to make the right decisions (usually adjustments) quickly in the field.  Geophysical logging data is graphically displayed as it is acquired, making it available for immediate interpretation and on-the-spot decision-making.

 

7)     Geophysical logging provides a continuous or complete profile of the subsurface section

Geophysical logs provide a continuous record of measurements with excellent depth accuracy, resulting in a complete and reliable profile of the section of interest.

 

8)     Geophysical logs are illustrative

The graphical nature of geophysical logs is conducive to rapid assessment and comprehension of subsurface conditions.  The logs make an excellent visual representation of the subsurface section (particularly in cross-section) that promotes effective communication between client, investigator, and regulator.

 

9)     Geophysical logging is a cost-effective data collection technique

When the commitment has been made to drill, geophysical logging can be added for a fraction of the drilling cost.  Geophysical logs are the most dependable source of high quality information for formation and well evaluation, and they provide that information at the lowest cost per unit.

 

10)  Geophysical logging will make you better…

           Geophysical logging generates a wealth of information, far more than can be obtained from drilling alone.  It provides            the edge that will make you a better scientist, engineer, regulator, consultant… a better problem solver.

 


 

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