For traps that have not been drilled, Class I traps in the evaluation of trap geological confidence refer to the traps that are reliable and have favorable geological conditions for accumulation, which can provide preparatory prospecting.
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In the evaluation of trap geological confidence, the trap can be qualitatively graded and evaluated according to the reliability of the trap implementation and the results of the geological validity evaluation.
The basis of trap geological confidence evaluation is the results of trap reliability evaluation and geological validity evaluation. Only the traps evaluated as reliable or more reliable can be comprehensively evaluated and become drilling targets.
The input-output ratio of trap exploration refers to the Discovered PIIP per unit of exploration cost.
The cost of trap exploration refers to all the expenses incurred from the beginning of the play evaluation to the complete exploration of oil and gas.