88 Energy's sundry application for the main stimulation work at Icewine#2 has been approved by the Alaska Oil and Gas Conservation.
The company said: "Based on the interpretation of data collected in both Icewine#1 and Icewine#2, the final design submitted was based on two stimulation stages comprising of multiple perforations in each stage.
"One stage will be executed in the lower HRZ and the other in the upper HRZ.
"These two zones were chosen largely based on areas with similar stress profiles, coincident with where hydrocarbon concentration is highest.
"The upper zone will be flowed back for up to two weeks before the lower zone is opened up and comingled with the flow from the upper zone.
"An additional two weeks of clean up will occur for the comingled flow before the company may be in a position to report hydrocarbon flow rates."
88 Energy said production testing remained on schedule for late June/early July and further updates would be made as and when appropriate throughout the drilling/testing programme.
Managing director Dave Wall said: "The company would like to thank its shareholders for supporting the Project Icewine team in getting us to the cusp of flow testing a potentially significant resource play in the HRZ shale.
"The work done to date by a dedicated group of employees and consultants has been to a high standard utilising the latest best practice techniques in industry.
"This increases the chance of a successful execution of the program but does not increase the likelihood of success for the play itself.
"The remaining key uncertainties, namely effective creation of complex fractures and gas to oil ratio, cannot be resolved until the stimulation is executed."
At 8:29am: (LON:88E) 88 Energy Ltd share price was -0.1p at 3.95p