Full Service Direct Imaging

Stock Drilling Inc., is proud to provide: LIF, MIP, MIHPT, EC, and HPT Direct Imaging Services. 

UVOST® LIF by Dakota Technologie

UVOST® LIF efficiently delineates petroleum, oil, and lubricant (POL) contaminants in the subsurface.

All the usual forms of POLs, including; gasoline, diesel fuel, jet fuel, and hydraulic fluids, can be detected via the fluorescence response of their polycyclic aromatic hydrocarbon (PAH) constituents. The fluorescence signal scales proportionally with NAPL concentration.

UVOST struggles to detect high-PAH content NAPLs such as tars, bunkers, etc.

UVOST’s LIF technique, in conjunction with direct push deployment, yields a detailed three-dimensional map of the NAPL distribution, in real time – offering a true “seek and find” adaptive site characterization capability as promoted by U.S. EPA’s TRIAD approach.

UVOST-LIF

Major Benefits of UVOST®

  • Typical detection limit of 10-500 ppm (NAPL type and soil dependent)
  • Operates effectively above and below the saturated zone
  • Fast! – probe advances at ~0.8 inch/sec without pause
  • Typical daily productivity of 300-500 feet across 10-20 locations
  • One inch data density coupled with nearly instantaneous response provides continuous detailed log of product distribution and heterogeneity
  • Color-coded logs for the ultimate in qualitative information “at-a-glance”
  • Waveforms offer product identification/verification and rejection of non-contaminant fluorescence such as mineral, peat, and other minor interferents
  • Advanced UVOST® data analysis service from Dakota harvests waveform information to allow custom analyte isolation and/or interference rejection in the logs
  • CPT and percussion (Geoprobe/PowerProbe) deliverable – if direct push sampling gets there, UVOST® can get there
UVOST-LIF
UVOST-LIF

Electrical Conductivity (EC)

  • Electrical Conductivity (EC) instrument, a complimentary module for UVOST. Different soil types will conduct electricity differently depending on particle size and mineralogy. For example, clays generally will have high conductivity while gravels will have low conductivity.
  • By logging EC with Dakota’s optical screening tools, you can develop a site wide model of source pollution and unconsolidated stratigraphy, two key components to predicting mobility.
  • The EC system operates at the same time OST data is being gathered. To collect EC data at the same time as OST data you need an EC module, a downhole dipole threaded below an EC capable SPOC, and a special fiber cable with EC wires.

EC logs are used to define zones of lower conductivity, equivalent to coarser grained, more permeable sediments, which will allow the movement of contaminants (hydrocarbons, chlorinated VOCs, or metals) in the subsurface. The lithologic information gathered with the Conductivity System can be used to aid the investigator in understanding the movement and location of contaminants in the subsurface. This information will also assist in the proper placement of monitoring or extraction wells.

UVOST-LIF
ELECTRIC CONDUCTIVITY

MIP by Geoprobe®

  • The MIP (membrane interface probe) is a direct push tool used to log the relative concentration of volatile organic compounds (VOCs) with depth in soil.
MIP geobrobe

MIHPT

The new probe detects volatile contaminants with the MIP, measures soil electrical conductivity with a standard (MIP) dipole array, and measures HPT injection pressure using the same down-hole transducer as the Geoprobe® stand-alone HPT system.  In post-processing the log data with Geoprobe® DI Viewer software, the user is able to estimate hydraulic conductivity (K) and water table elevation, as well as prepare graphical outputs of the log data.

MIHPT
MIHPT

Low Level MIP

Low Level MIP (LL MIP) is a technology developed by Geoprobe Systems® that greatly increases the sensitivity (and therefore utility) of the MIP logging tool.  The primary feature of LL MIP technology is that the carrier gas stream that sweeps the internal surface of the MIP membrane is pulsed.  This results in an increase in the concentration of VOC contaminant delivered to the MIP detectors.

Low Level MIP can be performed with standard MIP probes, MiHpt probes or with MIP-CPT probes.  To perform this method an operator will need to add the MP9000 Pulse Flow Controller along with an updated version of the FI6000 acquisition software to the current MIP system.  The addition of the MP9000 to the system is simple and requires only the rearrangement of gas line connections.  This controller can then be easily removed from the system to return to standard MIP logging.  Switching between methods requires only a few minutes of time.

low level mip

Hydraulic Profiling Tool (HPT)

The Hydraulic Profiling Tool (HPT) allows the user to create fast, continuous real-time profiles of soil hydraulic properties in both fine- and coarse-grained material. The HPT uses a sensitive, downhole transducer to measure the pressure response of the soil to injection of water. One primary use of this tool is to locate and define preferential migration pathways for contaminants in the subsurface. It can also be used to target zones for injection of remediation material. In addition, the HPT can be used to select well screen intervals, evaluate locations to conduct slug tests, and measure static water conditions across a site.

  • Fast, continuous, real-time profiling of soil hydraulic properties
  • Use in both fine- and coarse-grained material
  • Use in both saturated and unsaturated conditions
  • Built to withstand percussion driving
  • Collects static water level data
  • Provides a simultaneous log of electrical conductivity with integrated Wenner array
  • Sensitive, downhole transducer measures pressure response of soil to injection of water
  • Parameters are displayed and stored on the field instrument for future analysis
HPT
MIP geobrobe

HPT-GW Sampler

The HPT-GW Sampler represents a unique combination of Geoprobe’s HPT logging and  groundwater sampling technologies.  This direct push logging/sampling tool is 2.25 inches (57mm) in diameter and is driven using 2.25 in. probe rod.
In the logging mode, this tool will collect HPT (Hydraulic Profiling Tool) and EC (Electrical Conductivity) logs as it is driven to depth in unconsolidated formations. 

The tool can then be stopped at intervals selected by the user and groundwater sampling can be performed using the bladder pump incorporated into the tool.

The HPT function of this tool is essentially the same as used in other Geoprobe® HPT tools; a down hole transducer is used to record the pressure required to inject a measured flow of water into the formation as the tool is advanced to depth.  In the case of the HPT-GW Sampler the typical injection flow rate is 500 ml/min.  The HPT log can be used to determine hydrostatic pressure (and thus predict position of the water table) and to estimate formation hydraulic conductivity.

HPT-GW Sampler
HPT-GW Sampler

OIP/OIHPT- Optical Imaging Profiler

  • Detects UV induced fluorescence of non aqueous phase fuel hydrocarbons in soil.
  • The OIP uses high intensity UV light directed at the soil which causes hydrocarbons present in the soil to fluoresce. An Image of the soil is captured by the camera and analyzed for fluorescence.
  • Visible light images of the soil may also be captured.
    Can now be combined with hydraulic profiling tool.
OIP OIHPT

Direct Image Viewer

DI Viewer is the display log software from Geoprobe Systems®, which can display and print EC, MIP, HPT, and CPT logs as well as MIP response and HPT dissipations & static water level data. This release adds support for the new log format used by the FI6000

Direct image viewer

Century System VI Gamma Logging

  • Includes Century’s SYSTEM VI electronics.  The Model VI 300M with SYSTEM VI is a peripheral device to the users’ Desktop or Laptop computer.  All logging specific hardware/electronics and the motor controller are mounted on the drawworks, which is connected to the users’ computer with a standard Ethernet cable connection. Comes equipped with all software and hardware necessary to log, edit, process, print or interpret with the complete list of Century tools.
  • The Display software provided prints log data via any Windows compatible color or monochrome printer. Includes 300 meters of high strength 3/16 inch, 4 conductor logging cable.  Regenerative feed back speed controller provides positive and smooth speed control. Automatic level wind provides for trouble free spooling of the cable. Four conductor mercury slip rings provides static free wire-line connection. Five volt DC digital optical encoder insures accurate high resolution depth control. Large mechanical band break capable of slowing and stopping drawworks with maximum tool weight and maximum speed.
Century System VI Gamma Logging

System VI Probe Attachments:

  • Natural Gamma
  • 64 in and 16 in Normal Resistivity
  • Neutron-Neutron
  • Lateral Resistivity 48 in
  • Spontaneous Potential
  • Single Point Resistance
  • Temperature and Delta Temperature
  • Slant Angle and Azimuth
  • Full Wave Sonic
  • Gyro Deviation
  • Three Arm Caliper
Century System VI Gamma Logging

GeoVision HD Bore Hole Camera

  • Six Color and Ultra Low Light camera options. They are 100% solid state cameras that are small diameter, light weight and highly reliable. They have excellent light sensitivity and low power consumption.
  • Every camera housing is pressure tested beyond its rated. There are stainless steel screws in the housing and a brass connector for the cable connection. The camera’s light source consists of eight white LED’S (Light Emitting Diodes). The camera and housing together weigh less than 4 ounces.
  • The Camera Pan and tilt attachment allows the operator, at any time, to tilt the camera head from looking straight down through looking sideways to looking 90º above horizontal (upward) by pulling up on the camera cable. This can be done in 4” or larger boreholes
  • The adjustable camera Centralizer and/or a pipe string (see above) can be attached to the camera support’s female pipe adapter. Use the centralizer to keep the camera in the center of 4” to 14” bores. The nylon straps are adjusted outward so their setting is somewhat smaller than the borehole. The straps are on an outer pipe while the pipe adapters are on the inner pipe. This allows free rotation of the camera without rotation of the nylon straps. Thus, material is less likely to be loosened from the borehole walls by the straps when the pipe string is turned to rotate the camera head
  • The camera has a steel, heavy-duty, hand operated winch with a length of 325’.
  • The cable is a three-conductor polyethylene coated cable with footage marked at one-foot intervals (optionally marked in meters). The copper clad steel ground and power wires each have an average tensile strength of about 75 pounds. The cable is used to support the camera through support clamp.
  • The various components are connected to and interact through the System Power Supply. The system can be powered from a 115 Volts AC 60 Hz source through use of the AC power adapter or directly from a 12-14 Volts DC power source. The other connectors on the box include, microphone in, Audio & Video out jacks.
  • The Camera includes: On-Screen-Depth display, 5.6” LCD Color Monitor, Side-Looking Mirror, Compass, Dual-Dive Light, 300 watt inverter.
GeoVision HD Bore Hole Camera
GeoVision HD Bore Hole Camera