渤海油田油气勘探阶段及储量增长潜力  

Oil and gas exploration stage and potential of reserve growth of the Bohai Oilfield

作　　者：江尚昆 王德英 孙哲 彭靖淞 赵弟江 JIANG Shangkun;WANG Deying;SUN Zhe;PENG Jingsong;ZHAO Dijiang(Tianjin Branch of CNOOC(China)Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《海洋地质前沿》2022年第2期48-54,共7页Marine Geology Frontiers

基　　金：中海石油(中国)有限公司“七年行动计划”重大科技专项课题“渤海油田上产4000万吨新领域勘探关键技术”(CNOOC-KJ135ZDXM36TJ08TJ)。

摘　　要：近20余年来,渤海油田发现了一大批大中型油气田,储量持续高速增长,但近年来渤海油田油气勘探面临的挑战越来越大。勘探阶段对油气勘探具有重要的意义,不同的勘探阶段,其储量增长的特征、规律不同,勘探的思路和方法也不相同。在总结前人研究成果的基础上,综合分析大中型油气田的发现数量、油气探明程度、探明速率、探井控制面积、储量增长曲线及其变化特征等多因素,指出渤海油田目前处于勘探高峰早期阶段。渤海油田储量仍将保持高速增长的趋势,但浅层、中层和深层储量将逐渐呈差异化增长的特征:浅层油气勘探程度相对较高,但仍处于勘探高峰早期阶段,在未来不长的时间可能进入勘探高峰晚期阶段,发现大中型油气田的数量将逐渐减少,中小型油气田数量的比重将逐渐增大,在寻找大中型油气田的同时,浅层应该加强中小型油气田的勘探,加强一体化勘探和油田内部挖潜,加强隐蔽油气藏勘探;中-深层油气勘探程度较低,处于勘探高峰早期阶段前期,储量将高速增长,将是推动渤海油田储量持续稳定增长的主要领域,中-深层应该以寻找大中型油气田为主要目标,以新理论新技术提高勘探成功率。In the past 20 years, a great number of large and medium-sized oil and gas fields have been discovered in the Bohai Oilfield and the reserve growth rate is quite high. However, in recent years, oil and gas exploration there is faced with difficulties and challenges. The determination of exploration stage is of critical significance to oil and gas exploration. The characteristics and status of reserves growth are different in different exploration stages, and so are the exploration strategies and methods. Upon the basis of previous researches, this paper comprehensively analyzed the number of large and medium-sized oil and gas fields, the degree of oil and gas exploration, the proven rate, the controlled area of exploration wells, and the reserve growth curve and its variation in the Bohai Sea. It is found that the Bohai oilfield is remained in the early stage of an exploration peak. The reserves of Bohai oilfield will still maintain a rapid growth trend in a period. However, the reserves growth in the shallow,middle and deep layers might be quite different in characteristics. In addition to continuously looking for large and medium-sized oilfields, the rolling exploration of surrounding oilfields and subtle reservoirs should be strengthened for the shallow oil and gas fields, which have a relatively high exploration degree and remain in the exploration peak stage, or will enter the late stage of the exploration peak in the near future. However, the exploration degree for middle and deep oil and gas remains relatively low, and is still in the early stage of the exploration peak, the reserves will rapidly increase in the future. They are the main fields to retain the sustainable high-speed growth of reserves in the Bohai oilfields. We should still take large and medium-sized oil and gas fields as the main exploration targets by improving the exploration success rate with new theory and new technology.

关 键 词：勘探阶段 探明程度 储量增长 渤海海域 渤海油田 

分 类 号：P744.4[天文地球—海洋科学]