Characteristics of the proved new addition economic recoverable oil and gas reserves in China

doi:10.3969/j.issn.1672-7703.2022.05.002

Abstract

Abstract: Since 2005, the economic recoverable oil and gas reserve, a new category of reserve indicator, has been established in China. The process of the newly increased economic recoverable reserve in China and major oil companies is summarized, and the basic characteristics of the proved new addition oil and gas reserves as well as 38 newly proved large to extra-large scale oil/gas fields or blocks from the 11^th Five-Year Plan to the 13^th Five-Year Plan period in China are discussed. After analyzing the history of the proved new addition economic recoverable oil and gas reserves in China and PetroChina, the distribution and classification characteristics of reserve size, reserve abundance,porosity and permeability of reservoir and burial depth are focused. Then the proved new addition oil and gas reserves in China in the past 15 years are comprehensively evaluated by applying indicators such as finding reserve replacement ratio (FRRR) and technical/economic recovery factor. The study results show that the proved new addition oil and gas reserves have the trend of “three decreases and three increases”, that is, the decrease of FRRR, recovery factor and scale of the integrated oil/gas field, and the increase of tight reservoir, low to ultra-low abundant reserve and burial depth, indicating an overall deteriorating of the new addition oil and gas reserves in China. FRRR is an indicator that has strategic significance for the evaluation of exploration effectiveness. It is suggested to speed up the establishment of economic recoverable reserve classification system and management system adapted to the characteristics of Chinese oil companies to better apply to the petroleum exploration field and further meet the needs of reserve development and production increase.

CLC Number:

TE121

Wang Yongxiang, Yang Tao, Xu Xiaolin, Ju Xiujuan, Hu Xiaochun. Characteristics of the proved new addition economic recoverable oil and gas reserves in China[J]. China Petroleum Exploration, 2022, 27(5): 13-26.

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