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Seequent are offering a 12 month free subscription of Res2Dinv 5.0 if you return your old Res2Dinv dongle.

In order to receive this offer you must first register your interest by filling out the online form, mail your dongle , create a sequent ID and download Res2DInv 5.0.

The new 5.0 features include:

. Faster workflows via the tab interface (one window data processing) . Real- time editing from pseudosections and data profiles, easy data evaluation and model creation . Easy access to the visualisation menu where you can choose and tune color scales. . Consolidate grid model and inversion set up

By having the Rse2Dinv update you can improve the efficiency of your data processing whilst keeping your data on one server.

Geomatrix will be sending over a newsletter with some further information and a link to the Res2DInv 2.0 webinar soon.

The webinar will be held online on the 6th July @ 17:00pm London time and led by Dr. Kenni Dinesen Petersen (Seequent).

RadExPro have released a new tutorial, which carefully goes through how to process near surface land Seismic reflection (CDP) data effectively in RadExPro. They provide example input data (Onshore seismic profile data in SEG-Y format) which you can process alongside the step by step tutorial guide. The guide will go through the following steps:

• Basic CDP data processing
• Geometry input until stacking and time-to depth conversion (minimum processing graph) - focus on the SH-wave profile
• The guide will also help you process the P-wave data (do not follow the Subtraction of left & right shot part of the tutorial as this is used for the excitation of the SH-waves perpendicular to the profile line) You must be familiar with the CDP theory method and basic seismic processing (reflection) RadExpro also provide the full project dataset (fully processed data) to refer back to. The Tutorial Steps will be as follows:
• Loading input data into the project
• Geometry assignment and CDP binning
• Subtraction of “left” and “right” shots (miss out this step for P-wave analysis)
• Control of assigned geometry with the use of linked crossplots
• Data analysis and pre-processing
• Velocity Analysis
• Processing, getting a seismic section
• Time-to-depth Conversion

Please follow the link below for access to the tutorial materials: https://radexpro.com/tutorials/#reflection-data

Recently, Geomatrix Earth Science Ltd acquired a new borehole probe which we have now added to our rental pool. The probe is an acoustic borehole imager (also known as the acoustic televiewer), which is a new second generation quick link QL40ABI-2G probe, developed by Mount Sopris Instruments and BHTV technology. The QL40ABI-2G uses new re-designed sensor & electronics with a 96dB, 10msps A/D converter coupled to a 150mA DSP digital signal processor. This signal processor processes the data in real time for each individual ultrasonic wave, increasing the signal detection dynamic range and enhances its usability in the field.

As with most of the Mount Sopris borehole probes, the QL40ABI-2G is a Quick link tool which can be linked up with other Mount Sopris QL probes for multiple logging applications. The QL40ABI-2G is supplied as a QL bottom sub, however, the operator can use it as a stand alone tool (non-stackable) if required.

As you deploy this televiewer down your borehole, the instrument transmits ultrasonic pulses via its fixed transducer (a piezoelectric ceramic crystal) and rotating mirror at roughly 1.2MHz frequency. The generated wave propagates through the acoustic head and borehole fluid until it reaches the fluid/wall boundary and is reflected back. The acoustic televiewer measures/records the amplitude travel time and a digital image/ scan is captured of the borehole wall. There is also an option for multiple echo recording by recording the reflected acoustic wave and the use of further sophisticated algorithms to detect and classify specific echo’s.

Features:

. The acoustic televiewer has the latest firmware updates/ developments which allows the user to infer the thickness of the wall, in more adverse borehole conditions. . Improved signal detection/dynamic range . Increased travel time resolution . Multiple operating modes, such as in PVC cased boreholes the instrument can record the echo of the PVC and the borehole wall, this can be extended to steel cased boreholes (i.e can derive casing thickness and evaluate rate of corrosion)

At the end of January 2022, Joanna Holmgren and Max Werner from Bristol University and BGS’ Jon Chambers visited the UK Geoenergy Observatory (UKGEOS) in Glasgow to conduct a small seismic borehole survey at the abandoned coal mines that have been repurposed by UKGEOS for geothermal research.

The aim of the fieldwork was to see how well an emerging seismic monitoring technique called distributed acoustic sensing (DAS) performs in a shallow, urban geothermal setting. Over three days, the team from Bristol University recorded DAS down a 90 m-deep borehole, deploying hydrophones alongside the fibre-optic cable as a benchmark.

For further information about the project and a seek peak at the initial results refer to the UKGEOS blog post

WellCAD V.5.5 - New Release!

This new version of the WellCAD software has been updated to include a number of new features and upgrades. This involves changes to the image & structure interpretation package with Linear structure picking, Partial picks, Terzaghi correction and revised Borehole imaging (BHI) import.

These will allow the user to better image core linear structures and lineation’s and interactively pick the orientation, present plus classify structures. Partial picks allows individual or multiple selection of visible segments in the sinusoid to derive the depth of the planar feature/eroded bedding plane. The software’s statistical analysis functions have expanded, allowing the user to analyse the structural picks along the borehole axis, providing a weighting factor on the acute angle between the structure and axis (Terzaghi correction). BHI tools replace the FMS/FMI import wizard enabling tool configuration adaption to the imported data channels allowing you to view the data prior to final conversion with fast and easier processing.

The Basic module and flowmeter workspace has  upgraded functions which improve the data analysis.  The main highlights include CoreCAD (new lithology dictionaries), WellCAD workspace expansion, Spinner flowmeter calibration, Flow velocity plus bulk flow process and flowmeter workspace improvements. Essentially, these will allow the user to assess the speed and spinner frequency curve and supply a linear regression in order to obtain a calibration model which is automatically saved. The flow velocity and bulk flow process allow the user to compute flow velocity from measured spinner frequency data and compensate for logging speed. The workspace can handle in-flow and out-flow situations - with a new simple SHIFT + left click function.

There are many more features including the fullwaveform sonic module for cement bond index and compressive strength process (signal attenuation comparison in partially cemented zones)  along with the automation module for the integrated script editor (visualisation of Visual Basic Scripts). There are further developments to enable python script support later in 2022 known as pyWellCAD although a beta option will be available in WellCAD 5.5.

Please note that ALT will be hosting a number of free webinars in the upcoming week to highlight these new features - These are free webinars which are around 30-45minutese each, please register your interest!

3/15/2022 10:00AM Time zone: (UTC +08:00) Singapore, Perth; Language: English

3/15/2022 10:00AM Time zone: (UTC +01:00) Amsterdam, Berlin; Language: English

3/16/2022 09:00AM Time zone: (UTC -5:00) Bogota, Lima; Language: Spanish

3/17/2022 03:00PM Time zone: (UTC +01:00) Amsterdam, Berlin; Language: French

3/17/2022 03:00PM Time zone: (UTC -05:00) Eastern Time (US & Canada); Language: English

If you would like a link to these webinars, please drop an email to sales@geomatrix.co.uk.