Chevron joins at least four other international energy producers who abandoned Poland because of disappointing results.
Reserve estimates were calculated by the company's independent reservoir engineering firm.
The U.S. Energy Information Administration cut Poland's technologically recoverable wet shale gas reserves by 21% from a 2011 forecast.
The company also reported that site preparation is nearly complete and the rig will begin moving on to the Angowice-1 well location next week.
After the final frack, the Lewino vertical well yielded sustained production of 45,000 to 60,000 cubic feet of gas per day after partial frac fluid recovery.