Elster Oil & Gas is an oil and gas company based in Highland Ranch, Colorado. The company was formerly known as Tekton Energy and has sold the majority of it`s assets in May 2014.
The remaining assets consist of acreage in the Wattenberg Field area of Northeastern Colorado. The company took part in a large scale drilling program in 2017 and since Q1 2018 all of the planned wells are in production.