doi:10.16186/j.cnki.1673-9787.2020.3.5

Received:2019/08/15

Revised:2019/10/17

Published:2020/05/15

Fine exploration method in blank reserve area of main oil-bearing strata in highexploration degree area ： A case study of Es₃ in Bonan sag， Bohai bay basin

AN Tianxia1,2, SONG Guoqi3, WANG Yongshi3, HAO Xuefeng1, XIANG Lihong1, WU Songbai1, LIU Ruijuan1, YIN Lijuan1, LIN Lu1

1.Petroleum Exploration and Production Research Institute of Shengli Oilfield， SINOPEC， Dongying  257015 ， Shandong， China;2.School of Geosciences and Resources ， China University of Geosciences（ Beijing） ， Beijing  100083 ， China;3.Shengli Oilfield Company， SINOPEC， Dongying  257001 ， Shandong， China

Abstract:Based on the analysis of the key problems and countermeasures of restricting the exploration of main oil-bearing strata in the blank reserve area in Bonan sag， a set of fine exploration ideas and methods with the main line of “ surplus resources→reservoir types→main controlling factors of accumulation→origin of the blank reserve area→key technologies of exploration“ have been formed and put into practice in the research area. There sults showed that Es3 in the southern slope belt of Bonan sag still had great exploration potential， lithologic- structural reservoir might be the possible reservoir type in potential area ； the distribution of oil and gas reservoirs was controlled by the reservoirs distribution characteristics， trap effectiveness was mainly controlled by structure ， reservoir， fault sealing and oil-bearing column ； poor reservoir condition ， poor sealing fault and low oilbearing column were the genesis of the blank area of reserves. The key technologies of favorable reservoir prediction ，trap effectiveness and quantitative evaluation of oil-bearing column have been formed through tackling key problems， and good exploration deployment effect has been achieved. The results had reference significance for fine exploration of main oil-bearing series in other continental fault basin in east China.

Key words:main oil-bearing strata;blank reserve area;fine exploration;high exploration degree area;Bonan sag

高勘探程度区主力含油层系储量空白_省略__以渤海湾盆地渤南洼陷沙三段为例_安天下.pdf