渤海海域浅层油气运移成藏理论技术创新与勘探突破  

Technological and theoretical innovations in the shallow hydrocarbon migration and accumulation of the Bohai sea and the exploration breakthroughs

作　　者：薛永安 杨海风 黄江波 杨传超 柳永军 王利良 XUE Yongan;YANG Haifeng;HUANG Jiangbo;YANG Chuanchao;LIU Yongjun;WANG Liliang(CNOOC China Limited,Tianjin Branch,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：《中国海上油气》2020年第2期14-23,共10页China Offshore Oil and Gas

基　　金：“十三五”国家科技重大专项“渤海海域勘探新领域及关键技术研究(编号:2016ZX05024-003)”部分研究成果。

摘　　要：浅层新近系是渤海油田的主力储量、产量层系,但随着勘探程度的不断提高,渤海海域浅层规模性储量发现的难度越来越大。近年来,通过地质认识和勘探技术的创新,重新认识了渤海海域浅层油气运移条件,建立了浅层油气富集与深层油气初次、二次运移的关系,明确了浅层油气富集贫化机理,深化了“汇聚脊”控制浅层油气富集模式;在新认识的指导下,开展了基于地球物理方法的高勘探程度区浅层规模型构造 岩性目标探索,成功获得渤中29-6油田、垦利6-1油田等多个浅层大中型油气田的持续发现,保障了渤海油田储量、产量的稳步增长。渤海海域浅层油气运移成藏理论技术创新与勘探突破,不仅对该地区后续勘探具有重要的促进作用,也对其他地区类似勘探具有一定的借鉴意义,同时具有很高的科学价值。The shallow Neogene is the main reserves and production stratum of the Bohai oilfield.However,as the exploration degree continues to increase,the discovery of shallow large-scale reserves in the Bohai sea is becoming increasingly difficult.In recent years,through the innovations in geological understandings and exploration technologies,the shallow hydrocarbon migration conditions in the Bohai sea have been re-understood,the relationship between the shallow oil and gas enrichment and the primary/secondary migration of deep oil and gas has been established,and the enrichment/depletion mechanism of shallow oil and gas has been clarified,which enhances the"catchment ridge"-controlled shallow oil and gas enrichment mode.Under the guidance of this new knowledge,exploration of large scale shallow structural-lithological targets has been carried out in high-exploration areas based on geophysical methods,and several large/medium-sized shallow oil and gas fields which included BZ29-6 and KL6-1 oilfields have been discovered successfully in sequence,which guarantees the steady growth of reserves and production in the Bohai oilfield.Those technological/theoretical innovations and exploration breakthroughs not only play an important role in promoting the subsequent exploration of this region,but also have a certain reference significance for similar explorations in other regions.Meanwhile,they are of have high scientific value.

关 键 词：渤海海域 浅层新近系 油气运移 汇聚脊 勘探突破 渤中29-6油田 垦利6-1油田 

分 类 号：TE121.1[石油与天然气工程—油气勘探]