The explosion happened at 15400 JoAnn near FM 1952, between Wallis and Orchard. Orchard is about 15 minutes north of Rosenberg.
On the way to the scene in SkyEye, helicopter reporter Tammy Rose said the flames could be seen from 30 miles away.
According to the county's office of emergency management, this happened in an isolated area in a field.
Energy Transfer owns the pipeline.
Fort Bend County Judge KP George said that residents surrounding the area were evacuated as a precaution.
No injuries were reported and there was minimal property damage as a result.