摘要
中国探明而未开发的石油储量随时间推移而增加,但未开发率变化却不明显。截至2013年底,全国地质储量中的未开发量为85.11×108t,未开发率21.9%;可采储量中的未开发量为10.71×108t,未开发率12.5%。在分别做了未开发储量的盆地分布和公司分布、不同类型油田的未开发储量分析后,提出了以新思维、新技术来动用未开发石油储量的有关问题:1未开发石油储量是现实的增产领域;2重新认识探明储量的动态和现状;3适宜技术的应用是关键。在适宜技术的应用中包括:必须强调每块未开发储量的特殊性,进行新一轮的精细地震工作,适度引入致密储层油气的钻井和储层改造技术,大力推进稠油开发,以先进方式开发海上中小油田群,重视凝析油气田的开发等问题。最后提出中国三大国有石油公司要想在全方位发展过程中集中力量为石油增产做出更大贡献,可适当缩小已占有勘探区块面积,集中力量在已开发的油田上提高采收率,大力动用未开发储量,以取得更高的投资回报率和整体经济效益。
China's proven and undeveloped oil reserves increase with time but the undeveloped rate does not change significantly. As of the end of 2013, the undeveloped reserves in the country's oil in place are 85.11 × 10^8t and the undeveloped rate is 21.9 percent. The undeveloped reserves in the country's recoverable reserves are 10.71×10^8t and the undeveloped rate is 12.5 percent. Based on the analysis of the undeveloped reserves distributed in different basins, owned by different companies and belonging to different types of oil and gas fields, this paper proposes to use new mindset and new technology to solve the issues related to undeveloped oil reserves: (1) Undeveloped oil reserve is a realistic area to increase oil production; (2) Re-evaluate the dynamic and current conditions of proven reserves; (3) Application of suitable technology holds the key to development. So far as the suitable technology is concerned, it is necessary to stress the uniqueness of each block of undeveloped reserve, launch a new round of accurate seismic survey, appropriately introduce tight oil and gas drilling technology and reservoir transformation technology, and push ahead with heavy oil development. The advanced methods should be used for development of oil fields of medium and small sizes while importance is attached to development of condensate oil and gas fields. Finally, the paper proposes that if China's three major oil companies want to concentrate their efforts to increase oil production in their business development, they should appropriately reduce the areas of their exploration blocks and concentrate their efforts to improve recovery factor of the developed oil fields and energetically put undeveloped reserves into production for higher investment returns and economic performance.
出处
《中国石油勘探》
CAS
2014年第5期23-31,共9页
China Petroleum Exploration
关键词
未开发储量
储量开发率
未开发储量分布
致密油
稠油
凝析油
undeveloped reserves, reserve development rate, distribution of undeveloped reserves, tight oil, heavy oil, condensate oil