勘探程度定量研究新方法——以中国近海盆地为例

doi:10.3969/j.issn.1002-302X.2025.04.005

摘要/Abstract

摘要： 勘探程度是油气发展规划和勘探工作部署的重要依据。文章梳理了油气勘探程度研究方法的长期发展变化及存在问题，指出勘探程度分析应着重考虑勘探工作量，强调对不同盆地或区块勘探程度的相对比较，再结合地质认识程度、资源探明程度、储量发现情况等因素，指导未来勘探规划和勘探部署。提出了通过对地震和探井工作量标准化处理的勘探程度定量研究新方法，该方法采用二维地震测线长度、三维地震多次覆盖面积、三维地震最大覆盖面积、探井数、进尺数5 项参数，综合构建勘探程度指数（0～1），定量判定不同盆地或构造单元的勘探程度，使用方便且更符合勘探实际。以中国近海盆地为例研究表明，勘探程度最高的是渤海海域，其次是北部湾盆地、琼东南盆地和珠江口盆地，东海盆地、莺歌海盆地和南黄海盆地的勘探程度最低；二级构造单元中勘探程度最高的是渤海海域石臼坨凸起。

关键词: 勘探程度；勘探工作量；地质认识程度；储量发现；探明程度；中国近海；渤海海域

Abstract: Exploration degree is an important basis for the oil and gas development plan and exploration work. This article analyzes the changes and problems in the long-term development of the oil and gas exploration degree research method. It points out that analysis of exploration degree should take into account the exploration workload, stressing the relative comparison of exploration degrees among the different basins and blocks. In addition, the future exploration plan and exploration deployment should be guided in combination with geological understanding degree, proven degree of resources and discovery conditions of reserves. The article comes up with a new quantitative research method for exploration degree which is based on standardized treatment of the seismic and exploration well workload. This method adopts five parameters, such as the length of 2D seismic survey lines, the multi-coverage areas of 3D seismic survey, the maximum coverage area of 3D seismic survey, the amount of exploration wells, and drilling footage, to construct the exploration degree indexes in aggregation (0-1) and quantitatively determine the exploration degrees of different basins and structural units. It is convenient for use and in line with the actual exploration conditions. Taking China offshore basins for instance, the study shows that the offshore area of the Bohai Sea is the highest for its exploration degree, followed by the Baibuwan Basin, the Qiongdongnan Basin and the Pearl River Mouth Basin. The East China Sea Basin, Yinge Sea Basin and the Southern Yellow Sea Basin are the lowest for their exploration degrees. Among the secondary structural units, the Shijiutuo Uplift is the highest for its exploration degree.

Key words: exploration degree; exploration workload; geological understanding degree; discovery of reserves; proven degree; China’s offshore area; the Bohai Sea area

中图分类号:

仝志刚,郝建荣,徐建永,郭继刚,王柯,蓝倩,尹梦莎. 勘探程度定量研究新方法——以中国近海盆地为例[J]. 石油科技论坛, 2025, 44(4): 42-49.

Tong Zhigang, Hao Jianrong, Xu Jianyong, Guo Jigang, Wang Ke, Lan Qian, Yin Mengsha. New Method for Quantitative Research on Exploration Degree--Take China’s Offshore Basins for Instance[J]. Petroleum Science and Technology Forum, 2025, 44(4): 42-49.

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