Types and resource potential of continental shale oil in China and its boundary with tight oil

• 作者: GUO Bincheng HOU Lianhua HU Suyun LI Xin YANG Tao YANG Zhi ZHAO Wenzhi
• 来源期刊: 石油勘探与开发:英文版
• 学科: 工学
• 关键词: SHALE OIL medium-high MATURITY low-medium MATURITY resource potential TIGHT OIL BOUNDARY SHALE OIL revolution
• 年，卷（期）: 2020,（1）
• 页码范围: 1-11
• 页数: 11页
• 分类号: TE34

摘要

Continental shale oil has two types, low-medium maturity and medium-high maturity, and they are different in terms of resource environment, potential, production methods and technologies, and industrial evaluation criteria. In addition, continental shale oil is different from the shale oil and tight oil in the United States. Scientific definition of connotations of these resource types is of great significance for promoting the exploration of continental shale oil from "outside source" into "inside source" and making it a strategic replacement resource in the future. The connotations of low-medium maturity and medium-high maturity continental shale oils are made clear in this study. The former refers to the liquid hydrocarbons and multiple organic matter buried in the continental organic-rich shale strata with a burial depth deeper than 300 m and a Ro value less than 1.0%. The latter refers to the liquid hydrocarbons present in organic-rich shale intervals with a burial depth that in the "liquid window" range of the Tissot model and a Ro value greater than 1.0%. The geological characteristics, resource potential and economic evaluation criteria of different types of continental shale oil are systematically summarized. According to evaluation, the recoverable resources of in-situ conversion technology for shale oil with low-medium maturity in China is about(700-900)×10^8 t, and the economic recoverable resources under medium oil price condition($ 60-65/bbl) is(150-200)×10^8 t. Shale oil with low-medium maturity guarantees the occurrence of the continental shale oil revolution. Pilot target areas should be optimized and core technical equipment should be developed according to the key parameters such as the cumulative production scale of well groups, the production scale, the preservation conditions, and the economics of exploitation. The geological resources of medium-high maturity shale oil are about 100×10^8 t, and the recoverable resources can to be determined after the daily production and cumulative produc