Exxon has held eight exploration and production contracts in Colombia, including the fracking pilot.
All either have been or are being ended, suspended or liquidated, Colombia's National Hydrocarbon Agency (ANH) told Reuters.
The proposed bill would ban development of non-conventional energy projects including fracking.
"We will continue to have constructive dialogue with the Colombian government on a comprehensive assessment of our unconventional investments," Exxon spokesperson Michelle Gray told Reuters.
Exxon said it continuously evaluates and prioritize investments, including those in Colombia.