据油气新闻2月22日新闻消息称，哥伦比亚国家石油公司今天宣布了截止2020年12月31日的综合原油、凝析油和天然气探明储量（根据国际标准货币单位为1P储量）。储量根据美国证券交易委员会(SEC)的标准和方法估算的。
截至2020年底，哥伦比亚国家石油公司的净探明储量总计为17.7亿桶油当量(MBOE)，较2019年的18.93亿桶油当量减少6.5%。储量替代率为48％，平均储量寿命为7.5年。天然气储量占总量的29%，平均储量寿命为10.1年，而液体储量占剩下的71%，平均储量寿命为6.8年。
已探明储量的减少主要是由于用于估价的碳氢化合物价格下降了32%。根据SEC的方法，2020年的储量估值中使用的布伦特价格为43美元/桶，而2019年为63美元/桶。哥伦比亚国家石油公司估计，价格效应导致储量减少2.15亿桶油当量，部分被不同油田(如Rubiales和Ca?o Sur)新钻井项目增加的1.14亿桶油当量所抵消。
在提高采收率方面，有1.13亿桶的正变化，这主要是由于新增了与Chichimene和Castilla等油田注水相关的新项目的储量。
对储量余额贡献最大的是由哥伦比亚国家石油公司直接运营的Castilla、Chichimene和Rubiales油田。
哥伦比亚国家石油公司拥有85%的已探明储量，而其他集团公司拥有15%。
朱佳妮 摘译自 油气新闻
原文如下：
Ecopetrol’s proven reserves balance reaches 1,770 million barrels of oil equivalent at the end of 2020
Ecopetrol S.A. (BVC: ECOPETROL;NYSE: EC) announced today the Company’s consolidated crude oil, condensates and natural gas proven reserves (1P reserves, according to the standard international denomination) as of December 31, 2020. Reserves were estimated based on US Securities and Exchange Commission (SEC) standards and methods.
By the end of 2020, the Ecopetrol Group’s net proven reserves totalled 1,770 million barrels of oil equivalent (MBOE), which represents a 6.5% decrease versus 2019 (1,893 MBOE). The reserves replacement ratio was 48%, with an average reserve life of 7.5 years. Gas reserves represented 29% of this volume, with an average reserve life of 10.1 years, while liquids reserves represented the remaining 71%, with an average reserve life of 6.8 years.
The reduction in proven reserves was mainly due to the 32% decrease in hydrocarbon prices used for the valuation. According to the SEC methodology, the Brent price used for the 2020 valuation of reserves was US$43 per Brent barrel, versus US$63 used for 2019. Ecopetrol estimates that the price effect led to a decrease in reserves of 215 MBOE, which was partially offset by the addition of 114 MBOE attributable to new drilling projects in different fields, such as Rubiales and Ca?o Sur.
In terms of enhanced recovery, there was a positive variation of 113 MBOE, primarily due to the incorporation of reserves from new projects mainly associated with water injection in fields such as Chichimene and Castilla.
The largest contributions to the reserves balance came from the Castilla, Chichimene, and Rubiales fields, which are operated directly by Ecopetrol.
Ecopetrol S.A. owns 85% of the proven reserves, while the other group companies own 15%.
