China Petroleum Exploration ›› 2021, Vol. 26 ›› Issue (3): 88-94.DOI: 10.3969/j.issn.1672-7703.2021.03.008

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Evaluation method and application of oil and gas discovery cost of different exploration categories

Chen Xiaoming, Yang Tao, Liang Kun, Huang Jinliang, Wu Na, Li Zhixin   

  1. PetroChina Research Institute of Petroleum Exploration & Development
  • Online:2021-05-14 Published:2021-05-15

Abstract: A new evaluation method of oil and gas discovery cost based on different categories of exploration is proposed in order to properly reflect the effectiveness of oil and gas exploration, i.e., oil exploratory and natural gas exploration, which can’t be done by traditional methods.This new method covers an evaluation index system of exploration effectiveness, including twelve parameters of six categories based on different exploration categories. Firstly, relationship models of controlled, predicted and proven oil and gas reserves are established, and the weighted reserves sequence is constructed by regression analysis of reserve upgrade rate. Then the weighted discovery cost sequence is established based on the weighted reserves sequence and historical investment data. This method provides a solution for reasonable evaluation of oil and gas discovery cost of different exploration categories and eliminates the influence of fluctuating exploration rhythm and time span and lag of discovery, which can be applied to the fine preparation of exploration plan, and rapidly deploy from the reserves task to investment for different exploration categories, so as to optimally allocate the investment, and provide technical support for decision-making of oil companies at low oil price.

Key words: exploration effectiveness, discovery cost, evaluation method, deployment decision, exploration plan

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