I wrote something back in medieval times to create an Access database from wlk files (maybe that's not close enough)? Two big caveats though:
It's literally many years since I last looked at this and in all probability was not a well-tested nor very robust utility. I had intended to develop it further and make it more robust, but the project ran out of time and just became abandoned. For all I know it may not work at all nowadays. But if you get totally stuck with other options...
Second, I uploaded the program to some free webspace from an Internet provider that I used to use around 10 years ago, but the use of that site stopped also many years ago. Yet when I look, the site is still there. How bizarre! I can't imagine that the program is much use now and you're probably wasting your time, but FWIW the program is called WLDS and can be found at:
http://www.prodata.nildram.co.uk/