spread sheet junior explorers

Could you please help me with input into the range of info I should be looking at compiling to create a worthwhile spread-sheet for oil and gas exploration companies.
I will be including such things as shares on issue, sp, market capital, liquidity, enterprise value, tenements held and % of holding, drilling dates, survey info.
Are there any other factors I should consider, I'm sure that some of you have done this before.
Any help would be appreciated, I would be willing to share results with helpful interested parties.

--------------------------------------------------------------------------------
I dispense honest,sensible, uninformed dribble to be taken in small doses, if you find yourself agreeing with my posts please seek urgent medical help.