well logging

Well log plot

Extracting data from DLIS files

In my current research project, I am working with two well log datasets from Equinor. The first is a large dataset that they released to CIUS, my research group. The second is a smaller freely available dataset called Volve Data Village. The files in those datasets contain measurements from many of Equinor’s subsea wells on the Norwegian continental shelf. These data files are primarily in the DLIS format, formally known as API RP66.

Even though DLIS is the most common format for well log data today, only a very limited number of programs can read it. In addition, most of these programs are geared towards displaying the data so that log interpreters can analyse it visually. What I need, on the other hand, is full access to the data so that I can run my own computational analyses.

When I started my post-doc around a year ago, I had to figure out how to get the data out of DLIS files so that I could work with it. Since then, I have learned quite a bit about how to read these files. In this post, I want to share some of what I have learned with you.

Well logging example

Well logging blog post: “The health of petroleum wells”

I currently work as a post-doc at the Centre of Innovative Ultrasound Solution (CIUS) at NTNU. Here, all the researchers must occasionally write popularised blog posts about their work. It was recently my turn, and I wrote a post titled “The health of petroleum wells”. In that post, I go into what well logging is and what it’s for, and explain some of the aims of my current research project.

You can read my new blog post on the CIUS blog! You can also read some of my earlier work on ultrasonic well logging on my Publications page.

I have taken the header image from Equinor’s free Volve Data Village data set with explicit permission.