Zion Oil & Gas Inc (ZNOG)

[tisdal]

Hydrocarbon Indicators (HCI)

Zion's President, Dustin Guinn, says, "As a result of the increased level of gas, positive logging results, and belief that we are approaching a key zone of interest, coupled with the fact that we had an extensive amount of open hole (~4,400 feet), we made the decision to case this section of the well. After encountering a material section of shale, followed by a return to fractured carbonates with continued increasing hydrocarbon indicators, we felt it was in the best interest of all involved to take a conservative approach to protect the wellbore and help ensure we can successfully reach our target depth (TD).

A hydrocarbon indicator (HCI) or direct hydrocarbon indicator (DHI), is an anomalous seismic attribute value or pattern that could be explained by the presence of hydrocarbons in a oil or gas reservoir.

DHIs are particularly useful in hydrocarbon exploration for reducing the geological risk of exploration wells.

Wikipedia HCIs