China Petroleum Exploration ›› 2023, Vol. 28 ›› Issue (2): 35-43.DOI: 10.3969/j.issn.1672-7703.2023.02.004

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Study on prospect classification, evaluation and full-cycle management mode in petroleum exploration

Li Zhi, Kang Hailiang, Ji Zhifeng, Li Fuheng, Yang Zi   

  1. PetroChina Research Institute of Petroleum Exploration & Development
  • Online:2023-03-15 Published:2023-03-15

Abstract: Prospect evaluation and management are a key link to improve the efficiency of exploration decision-making and the success rate of exploration wells. The high-efficiency and standardized management serves as a bridge connecting prospect evaluation and exploration deployment. By investigating prospect classification, evaluation and management practices of major oil companies worldwide, and combining with the overseas exploration practice of Chinese oil companies, a set of prospect classification, evaluation and full-cycle management mode in line with the international practice is proposed. (1) Based on the data coverage, geological understanding, engineering conditions, and economic value of the prospect, four levels of prospects are classified, including Concept, Lead, Prospect, and Drill Ready Prospect, and the definition, conception, evaluation content and management requirements of each level are specified; (2) The classification system of undiscovered resources of the four levels of prospects is established, achieving the classified management of the undiscovered resources, which enriches and develops SPE-PRMS resource classification system; (3) The purpose, meaning, and connotation of full-cycle prospect management are clarified, and the key links in the full-cycle closed-loop management from Concept to post-drilling evaluation are determined, which have a significant guiding role in formulating annual exploration plans or medium and long-term plans. The application of this system clearly shows the requirements of prospect portfolio of various levels and the work objectives at different exploration stages to achieve the annual reserve increase target and maintain the sustainable development of the company, realizing the dynamic management of various levels of prospects and high-efficiency decision-making, which has good promotion and application value.

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