Petroleum exploration terminology: A drilled petroleum well is termed a “dry well” (or “dry hole”) when its produced hydrocarbons are in what practically non-commercial condition?

Introduction / Context:
In petroleum exploration and drilling, wells are evaluated by whether they can produce hydrocarbons economically. The industry term "dry well" (or "dry hole") focuses on commerciality rather than absolute absence of hydrocarbons.

Given Data / Assumptions:

• Assessment is based on sustainable, economic flow of oil and/or gas.
• Minor shows or traces do not qualify as commercial production.
• Water production alone is considered non-commercial for oil/gas purposes.

Concept / Approach:
A dry well is one that does not produce oil or gas in commercial quantities. It may encounter traces of oil/gas or shows in cuttings/mud logs but lacks marketable flow rates. Therefore, statements about "no natural gas" or "only natural gas" do not by themselves define dryness; economic viability does.

Step-by-Step Solution:

Verification / Alternative check:
Industry reporting and SEC/Petroleum reserves guidelines emphasize economic producibility; wells with only shows are categorized as dry/non-productive.

Why Other Options Are Wrong:

Common Pitfalls:
Equating dryness with literal zero hydrocarbon content; in practice, "dry" means non-commercial output.

Final Answer:
It yields only very little oil (not in commercial quantity)