U could add another column there for 'YEAR' or spud date & sort it by most recent.
U'll find that some of the wells have been revisited via a nearby pad later on by another operator, since the lease changes hands quite often.
U could also import that file into Google earth as a CSV file. Plus super-impose VIL's map & mark out the actual 'tenement' which extends halfway into the lake. (BTW, they used barge mounted rigs to drill in the lake)
Good job & thanks for sharing it with the others here.
VIL Price at posting:
5.3¢ Sentiment: Hold Disclosure: Held