Zion Oil & Gas Inc (ZNOG)

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I can be the 9th or 10th person to congratulate you on your listing of relevant terms in PR's

I remember at the time that the zone between 16,415 ft and 16,500 ft where they encountered oil was a highly nonpermeable layer. Acidification to loosen oil in such layers is common in the middle east, as per my research at the time.

And ZNOG used acidification in the nonpermeable zone to try to shake the oil loose. The research indicated a byproduct of the acidification is water-when the acid hits the rocks water is produced, according to what i read at the time. Sounded like they used a significant amount of acid and thus a lot of formation fluids (they mentioned).
But either the rock was too nonpermeable or their wasnt enough oil in that nonpermeable layer. And perhaps they didnt want to go further with acidification or Isarel may have had limitations on acidification just as Israel doesnt allow fracking-at least at that time. I remember the continual trouble with the packers which only lasted 5 days - 15000 plus ft down and 15000 plus ft up, which slowed them and they had to go outside Israel to acquire the packers.