Why did the first few oil-producing wells in the late 1800s have only a small impact on the Texas economy?

Here's link to the

tinyurl.com/wpazsebu

the

explanation:

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893