石油实验地质2016，Vol.38Issue(5)：592-599,8.DOI:10.11781/sysydz201605592
利用油田开发资料重新认识油气成藏--以渤海湾盆地南堡35-2油田馆陶组为例
Re-recognition of hydrocarbon accumulation regularity based on oilfield development data:A case study of the Guantao Formation in NB35-2 oilfield, Bohai Bay Basin
摘要
Abstract
According to the contradiction between production and geological understanding of the NB35⁃2 Oilfield, Bohai Bay Basin, we re⁃analyzed paleostructure, depositional features and the reservoir forming model as well as resource potential based on drilling, logging, seismic and production performance data. Paleostructures controlled sedimentary facies and hydrocarbon accumulation in the Guantao Formation. (1) Petroleum migration and accumu⁃lation were controlled by palaeogeomorphology of the buried hill area in NB35⁃2 block, which is different from the previous research results that reservoirs were restricted by lithology rather than structure. (2) Braided river sedi⁃mentary facies are predominant in the Guantao Formation. Reservoirs mainly distribute over superimposed, linked areas of main stream channels, and the space distribution of sand bodies is controlled by the secondary accumula⁃tion and distribution of oil and gas to some extent. (3) In the NB35⁃2 oilfield, faults controlled hydrocarbon accu⁃mulation, and hydrocarbon mainly accumulated in deep strata and migrated to shallow strata. Boundary faults and unconformities worked as a“resource network” and allowed hydrocarbons to accumulate in the Guantao Formation. Secondary faults were active in the shallow formations during late stage, and made crude oil migrate to the Minghuazhen Formation and form secondary oil pools. The Guantao Formation in the NB35⁃2 oilfield has a great petroleum potential, and may be 3 times larger than the previous estimation.关键词
油气成藏模式/油气富集规律/辫状河沉积/石臼坨凸起/馆陶组/渤海湾盆地Key words
hydrocarbon accumulation pattern/regularity of hydrocarbon accumulation/braided river deposi-tion/Shijiutuo uplift/Guantao Formation/Bohai Bay Basin分类
能源科技引用本文复制引用
全洪慧,陈建波,别旭伟,张章,张振杰..利用油田开发资料重新认识油气成藏--以渤海湾盆地南堡35-2油田馆陶组为例[J].石油实验地质,2016,38(5):592-599,8.基金项目
国家科技重大专项“渤海海域大中型油气田地质特征”（2011ZX05023－006－002）和“近海隐蔽油气藏勘探技术”（2011ZX05023－002）资助。 （）
