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Mezintel Gamma features three LWD log header styles with variation in format, bit run holding capacity, and content (e.g. emphasis on either casings info or mud properties).
A brief summary of these three headers is as follows:
Basic header for logs with 6 bit runs maximum.
The standard header is a brief, suitable for short jobs with a maximum of six bit runs. This header includes all baseline info for an MWD/LWD drilling job as shown here.
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There are two ways to annotate charts in Mezintel Gamma.
1. You can enter comments in EDIT PLOT window
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With Mezintel Gamma version 22.33.128, users have access to a utility for auto printing reports that enables the input of default minor and major increments. Please note that minor and major increments must be inputted and saved with each new job. The below figure demonstrates utilization of this utility to input default minor and major increments for a job.
Alternatively, this can also be achieved utilizing manual printing.
Mezintel Gamma can automatically generate and email predefined MWD reports — a collection that includes
While drilling, you may not want to log bad values for a particular sample (e.g. points that are too high or too low). In Mezintel Gamma (version 22.17.127 [1]), you can filter out such unwanted values from being logged while drilling.
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In drilling, there are two are two main ways to interpret the rate of penetration (ROP): Instantaneous and Average. Here are good definitions of the two:
Instantaneous ROP is measured over a finite time or distance, while drilling is still in progress. It gives a snapshot perspective of how a particular formation is being drilled or how the drilling system is functioning under specific operational conditions.
Average ROP is measured over the total interval drilled by a respective BHA from trip-in-hole (TIH) to pull-out-of-hole (POOH).
— G. Mensa-Wilmot and Y. Harjadi
Average ROP is important because it’s a key factor to consider when discussing drilling efficiency, plus it produces a cleaner plot than instantaneous ROP.
Averaging points produces a cleaner plot.
You can specify a gamma scale factor for each bit run in Mezintel Gamma (version 22.00.061 [1]) using a new built-in tool that helps you derive scale factors.
You can enter a scaling factor if you know it, otherwise, if you are unsure then you can calculate or find it from the Bit Runs window:
You may also click the … button to open up Get Scale Factor window.
Have you ever edited a log plot header to meet a requirement only to find yourself (or your colleagues) re-editing it several times to meet different requirements?
To make your work easier, you can now save multiple plot headers for the same job in Mezintel Gamma!
In Mezintel Gamma, samples points logged when the drill bit is ‘off-bottom’ are not shown on the plot. This is useful because it allows you to safely remove points from the plot by manually setting them to be off-bottom. This hides the points rather than delete them. The hidden points can be revealed again by reverting them back to be ‘on-bottom’.
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As you know, sometimes MWD sample data may go missing for an extended interval of time while drilling continues. In such cases, there is a gap in the sample plot for the depth interval where data went missing.
Up until now Mezintel Gamma used to fill-in (or close) the gap with a straight line. However, some users wanted to control whether or not to show such gaps, so we have provided you with a new option to do just that.
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Some geologists require well logs to be produced as one seamless image file, usually as TIFF.
Up until now, Mezintel Gamma exported logs only as PDFs with pages that print seamlessly from log printers. We referred users who need TIFF well logs to 3rd-party software; but this feature is now available from Mezintel Gamma software!
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Mezintel Gamma has been improved to generate completely vector-based PDF well logs, with these benefits*:
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