Services: Borehole Geophysical Logging

Tools and Techniques for Systematic Characterization and Remediation of Complex Sites
 

 

Princeton Geoscience, Inc. is now providing borehole geophysical logging services.  Our goal in providing these services is to help geologists and engineers, drillers and other practitioners better understand subsurface conditions important to decision-making and design at project sites.  The services are used in environmental site remediation, geotechnical engineering and water supply.  

To read more about applications of these services, click here.

To read about a recent project using borehole geophysics as part of a multiple lines of evidence approach for bedding attitude evaluation, click here

This log selection chart shows specific applications for logging services which we can provide, indicating which tools are useful for particular applications and the borehole conditions required.  Effective interpretation almost always involves looking at results from more than one log type.  Fortunately, many probes are capable of logging multiple parameters during a single logging run.

Princeton Geoscience owns equipment manufactured by Mount Sopris Instrument Company (MSI), a pioneer and world leader in the design and manufacture of “slimline” borehole logging equipment used in the water resources, mining, environmental and geotechnical engineering fields.  You may view their website at this link:  http://mountsopris.com/.  Data acquisition is accomplished using MSI’s MATRIX Logger and software in conjunction with a field computer running Microsoft Windows 7. 

Our MX Series winch holds 700 meters of single conductor cable, and most applications in the environmental, geotechnical and water supply fields are within reach.  In addition, the winch and other logging equipment are semi-portable and can be run with power from a small generator, allowing access over difficult terrain or to remote locations.

Princeton Geoscience utilizes MSI’s time-tested Poly-Series logging probes.  We own and have received MSI training in the use of probes for logging the following parameters of common interest in environmental and water supply investigations:  Caliper (3-arm), Natural Gamma, Spontaneous Potential, Normal Resistivity (8”-16”-32”-64”), Single Point Resistance, Fluid Resistivity, Fluid Temperature, Heat-Pulse Flowmeter.   Also, we have access to equipment needed to acquire acoustic- and optical televiewer, induction and other specialized logs, via rental from MSI and several equipment rental vendors.  We collaborate with another geophysical logging contractor, when necessary to complement our in-house experience.

Logs are prepared in a variety of formats, according to client and project needs.  In addition to MSI’s Logger Suite, Princeton Geoscience utilizes WellCAD software.  WellCAD is developed and distributed by MSI’s affiliate, Advanced Logic Technology (ALT), who also are designers and manufacturers of the Optical- and Acoustic Televiewer probes sold and rented by MSI.  You may view the ALT website here:  http://www.alt.lu/about_us.htm.  WellCAD is a widely used and powerful software package that enables robust presentation of logging data, and output in many formats convenient for use in other programs.  Princeton Geoscience’s WellCAD license includes the Reader, Crossplot, Browser, Image and Deviation modules, enabling full, accurate and efficient use of a full range of logging tools.

Please contact us for opportunity to review our capabilities with you, to see if we might be of assistance. 

 

RECENT GEOPHYSICAL LOGGING APPLICATIONS

Princeton Geoscience recently completed logging of the production well at one of our clients' sites.  The site, located in the Passiac Formation within the Newark Basin, relies on pumping a high volume of water from the fractured bedrock aquifer for non-contact cooling water and plume containment.

Data collected from this well will be used to correlate the position of water bearing fractures and other features to those in surrounding bedrock monitoring wells, in order to support optimal capture of the historical contaminant plume