Yes, I have more than one working businesses that are ongoing. They are my base income.Besides investing, have you built any businesses at this point?
In both of those examples it looks like you completely forfeited control.
Why not take that $15k and instead invest it in your own business and have more influence over the outcome?
As you will learn in time, there are only 24 hours in a day. You must run a successful business(es), build up your good fortune, and then you might become an investor in other people's businesses. The two examples I gave were "pie-in-the-sky" type of investment where the financial exposure is limited and they can have a huge upside. It's "angel" investing where you either lose your nut or make a lot of money. It's NOT a beginner's game -- it is for qualified investors only -- as per FDIC rules.
The reason to have an investment in a group of oil wells is that they produce a type of "passive income". The payments for that ownership percentage are put into your account for regular payouts over several years -- no effort, no sweat. But, oil wells are risky business. The operator can find that he has a dry hole. The hole can run dry or have other problems. The neighbors can sue for no reason or invalid reasons. The operator can go broke -- as he did here trying to get the project developed.