News Welcome to the Schlumberger Water Services new section, containing the latest
news on
groundwater
software, instrumentation, training, and consulting.
Conceptual modeling allows today’s professionals to streamline the model development process. This relatively new approach can increase efficiency specially when creating the numerical grid, defining model parameters, and assignation boundary conditions. The main benefits of conceptual model development include:
Better understanding of the groundwater flow system prior to transforming the conceptual model to a numerical model
Defining a model using GIS objects is much faster than the traditional cell-based approach
If the numerical model is modified, the model inputs can be easily regenerated from the conceptual objects
From the same conceptual model, you can generate multiple numerical models, of different grid types
Hydro GeoAnalyst* (HGA) helps ease the conceptual modeling process. However, you can expect an exciting new technology from SWS in the coming months. Stay tuned!
Diver-Pocket Manager 2008 and Diver-Office 2008 From the field to the office, these new product releases make programming your Diver dataloggers a breeze.
Program multiple Diver* dataloggers; download measurements onto your pocket PC or desktop; export data to a spreadsheet or modeling program. Diver-Pocket Manager* 2008 and Diver-Office* 2008 represent the latest innovation in Diver programmability and data management.
Support for new languages including Spanish, Portuguese, German and French
Improved integration with software and instrumentation
Added averaging sampling method
Anhanced QA/QC data filters
Wireless, Diver settings, and time series upgrades
Actual data enhancements
Whether you are monitoring landfills for groundwater contamination or managing potable water supplies, Diver-Pocket Manager 2008 and Diver-Office 2008 simplify readout and programmability of Diver dataloggers.
Schlumberger Water Services Sponsors 20th Salt Water Intrusion Meeting
SWS was a gold sponsor of the 20th Salt Water Intrusion Meeting (SWIM) held June 23 – 27 in Florida. The conference focused on saline groundwater in coastal and inland aquifers and was attended by global experts in an array of related fields.
Weixing Guo, of Schlumberger Water Services, presented a paper titled “Feasibility Study for Raw Water Supply to a Proposed Reverse Osmosis Plant on New Providence Island, Bahamas”.
Click here for the white paper.
Site Water Management - Strategies for Optimizing Water Usage
SWS provides expertise in the practical aspects of water supply, conveyance, efficient water use, and effluent disposal, as integrated services for site water management across the mining and oil industries. Many field stations, camps, and workshops typically have either too much or too little water. We help our clients implement innovative approaches and technologies to deal with their specific water management issues.
Efficient water use in water-scarce and water-positive sites
Effluent disposal strategies that last the entire lifetime of your operations
Expertise in a wide range of disciplines supports an integrated approach for complete end-to-end site water management solutions
Wide range of the most up-to-date technologies: instrumentation, software, test analysis, and data management
Click here to read more about site water management.
We are pleased to announce that two technical papers have been accepted for the Society of Exploration Geophysicists Conference in Las Vegas, Nevada, November 9-14 2008.
"The application of latest borehole geophysical technologies for the feasibility and pilot testing ASR" by Ibrahim Shawky, Schlumberger Water Services.
"Characterization of a fractured bedrock groundwater system for environmental remediation using borehole geophysics and 3D seismic data" by Bob Will, Schlumberger Water Services.
Lindsey Geary of Schlumberger Water Services will also be presenting a paper titled “Holocene Diatoms Recovered From SHALDRIL 1 Cores, Maxwell Bay, Antarctica” at the Geological Society of America Joint Annual Meeting in Houston, Texas, October 5-9, 2008.
Schlumberger Water Services Training Course Series
The Schlumberger Water Services Training Services Division has been offering a range of educational courses for the past 17 years. Our courses have been designed to decrease the confusion typically associated with technical topics, and include hands-on learning using the world’s most sophisticated software programs. Participants of our courses gain practical insight into a variety of environmental issues, and learn cost-effective techniques to achieve project objectives.
Using Hydro GeoAnalyst v4.0 with Visual MODFLOW v4.3
There are several ways that the data from a Hydro GeoAnalyst project can be used to create a Visual MODFLOW model including building the conceptual model layers and importing observation well data.
The conceptual model layers can be generated in HGA using the HGA project data. In HGA, you can query the database to determine layers with different lithology and export this data for use in a Visual MODFLOW model. In the example below, the HGA database is queried to determine the bedrock elevation. This can be determined by the stations in HGA that contain lithology data.
The conceptual model for this groundwater flow system can be summarized as below:
To query the bedrock surface, we will need to do the following calculation:
Ground Surface (station.elevation)
– Top of Bedrock (depth to shale or limestone = lithology.from_ [shale/limestone])
= bedrock surface elevation
Once the database has been queried to determine the bedrock elevation, a gridded surface can be created in the HGA Map Manager and then used in Visual MODFLOW. In HGA, load the query into the Map Manager and create a gridded surface of the data (.grd file).
It is also possible to export the model layers created in the cross section editor. Once you have created all of the cross sections for the project and defined the model layers, select File>Export Model Layers in the Cross Section Editor. You can choose which layers to export and from which cross sections:
The more cross sections you define, the more points you have for defining the layer interfaces in Visual MODFLOW. The model layers will be exported as a text file with x, y and z values.
In HGA, you may also define the calibration points (water levels or concentrations in observation wells) for Visual MODFLOW. You can create a calibration point file that can be imported into Visual MODFLOW by creating an HGA query.
In Visual MODFLOW, you will need the following columns (with an example) to import observation wells:
Name X Y Screen Measure Point Elev Stop Time Head
BH0902 2438 6556 1 580.1 1 602.55
Below is an example of a query to use to obtain the required information from the HGA database:
Once you have created the appropriate query, you may export the data from HGA to an excel spreadsheet or text file to import into Visual MODFLOW.
In Visual MODFLOW, you will need to set up the model with the appropriate model or world coordinates so that the files imported from HGA will correspond with these coordinates. Create the model and import the model layers as layer surfaces. Import the head observation wells into Visual MODFLOW using the query created in HGA. The calibration points from these wells will be used in Visual MODFLOW to determine how closely the observed values fit with the values calculated by Visual MODFLOW.
Schlumberger Water Services offers innovative groundwater monitoring solutions plus software for data management, data analysis, visualization, and modeling with a complete range of educational training and support services for environmental consultants, government agencies, industry, and educational/research institutions.
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