石油学报 ›› 2015, Vol. 36 ›› Issue (5): 521-532.DOI: 10.7623/syxb201505001

• 地质勘探 •    下一篇

非常规油气内涵辨析、源-储组合类型及中国非常规油气发展潜力

李建忠, 郑民, 陈晓明, 李登华, 汪少勇, 宋涛   

  1. 中国石油勘探开发研究院 北京 100083
  • 收稿日期:2014-10-17 修回日期:2015-03-08 出版日期:2015-05-25 发布日期:2015-06-10
  • 通讯作者: 李建忠,男,1968年11月生,1990年获北京大学学士学位,1999年获石油勘探开发科学研究院博士学位,现为中国石油勘探开发研究院资源规划所所长、教授级高级工程师,主要从事油气地质、资源评价与规划部署研究。Email:lijizh@petrochina.com.cn
  • 作者简介:李建忠,男,1968年11月生,1990年获北京大学学士学位,1999年获石油勘探开发科学研究院博士学位,现为中国石油勘探开发研究院资源规划所所长、教授级高级工程师,主要从事油气地质、资源评价与规划部署研究。Email:lijizh@petrochina.com.cn
  • 基金资助:

    国家重大科技专项(2011ZX05043)和中国石油天然气集团公司重大科技专项(2013E-0502)资助。

Connotation analyses, source-reservoir assemblage types and development potential of unconventional hydrocarbon in China

Li Jianzhong, Zheng Min, Chen Xiaoming, Li Denghua, Wang Shaoyong, Song Tao   

  1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
  • Received:2014-10-17 Revised:2015-03-08 Online:2015-05-25 Published:2015-06-10

摘要:

通过辨析非常规油气术语内涵,将非常规油气的源-储组合关系划分为源-储紧邻型、源-储一体型和源-储分离型3种类型。源-储紧邻型资源主要包括致密油、致密气,其形成条件及特征为:1紧邻优质烃源岩,以源-储压差为动力的近源高效聚集;2具有一定孔隙度的大面积致密储层,以微—纳米级无机成因孔隙为主;3分布于凹陷及斜坡区,含油气面积及资源规模大,丰度低,局部发育甜点;4构造作用较弱。源-储一体型资源主要包括煤层气、页岩气、页岩油、油页岩,其形成条件及特征为:1有机质丰度高,有机质类型及热演化程度形成不同类型的资源;2储集空间以纳米级有机质孔、粒间孔和微裂隙为主,富有机质集中段连续分布;3烃类主要以游离、吸附方式赋存,不同资源类型差异大;4具有自封闭性,保存条件受构造、温度、压力等控制,凹陷及斜坡富集;5通过体积压裂"人造渗透率"来提高单井产量。源-储分离型资源较特殊,主要包括:1经过改造的常规资源,如油砂、重油等;2特殊的温、压条件下形成的非稳态资源,以天然气水合物为代表。中国3类源-储组合资源的发展前景与现实性有差异:1源-储紧邻型资源最现实,未来5年将快速发展;2源-储一体型资源需要持续探索和技术攻关,未来10年有望较快发展;3源-储分离型资源以天然气水合物最具发展潜力,正在开展技术试验。

Abstract:

Through analyses on the connotation of unconventional hydrocarbon resources, the source-reservoir assemblage of unconventional hydrocarbons are divided into three types, i.e., adjacent source-reservoir type, united source-reservoir type and separated source-reservoir type. The adjacent-source-reservoir-type resources mainly include tight oil and tight gas with the following formation conditions and characteristics: 1) adjacent to high-quality source rocks, and belong to near-source efficient aggregation driven by source-reservoir pressure difference; 2) large-area tight reservoirs with certain porosity, dominated by inorganic micro-nano pores; 3) distributed in depression and slope areas with large hydrocarbon-bearing area and resource extent, low abundance and local development of "sweet spots"; 4) weak tectonism. United source-reservoir type mainly includes coal-bed methane, shale gas, shale oil and oil shale. Their formation conditions and characteristics are shown as following: 1) high organic matter abundance, different types of resources caused by organic matter type and thermal evolution degree; 2) organic-matter rich sections distributed continuously in the reservoir space dominated by nanometer organic pore, intergranular pore and micro fracture; 3) hydrocarbon occurrence dominated by free and adsorption mode with quite different resource types; 4) self-conserved with conservation conditions controlled by tectonics, temperature and pressure, enriched in depression and slope areas; 5) Improvement of well production through creating "artificial permeability" based on volume fracturing method. Separated source-reservoir type is special, mainly including: 1) oil sand, heavy oil and other conventional resources after transformation; 2) unsteady resources formed under special temperature and pressure conditions, represented by natural gas hydrates. The development prospects of these three types are different from the reality as below: 1) Adjacent source-reservoir type is most available, which will develop rapidly in the next five years; 2) United source-reservoir type needs continuous exploration and technical research, expected to rapidly develop in the coming decade; 3) Separated source-reservoir type is represented by natural gas hydrates with the most promising development potential, and relevant technical test is being carried out.

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