地质与资源2025，Vol.34Issue(2)：200-209,10.DOI:10.13686/j.cnki.dzyzy.2025.02.007
渤海海域辽东走滑断层转换带东营组高丰度油藏形成条件
Forming conditions of the high abundance reservoir of Dongying Formation in Liaodong strike-slip fault transfer zone,Bohai Sea:A case study of Lyuda-A oilfield
摘要
Abstract
The oilfield of Dongying Formation in Liaodong strike-slip fault transfer zone is characterized by large reserves and high abundance.However,the forming conditions of such reservoirs remain unclear.This study investigates the reservoir characteristics and comprehensive hydrocarbon accumulation conditions of Lyuda-A oilfield in Liaodong strike-slip zone of Liaodong Bay Depression by using drilling,3D seismic,well logging and analytical test data.The results indicate that the oil-bearing series is the Paleogene Dongying Formation,belonging to an integrated high-quality Paleogene oilfield with the characteristics of concentrated oil-bearing intervals and high reserves abundance.The source rocks with large thickness,high abundance of organic matter,moderate maturity and favorable types provide sufficient material basis for the high-abundance oilfield.The faulted anticlinal trap controlled by the LZ1 strike-slip fault transfer zone,the thick reservoir formed by braided river delta developed in Dongying Formation and the efficient hydrocarbon migration pathway formed by induced fracture zones within the LZ1 strike-slip fault collectively constitute favorable accumulation conditions,ensuring the formation of high-abundance oilfield.The first-stage oil-gas charging in Dongying Formation is characterized by the late-stage rapid charging,which serves as a prerequisite for the formation of high-abundance oilfield.关键词
东营组/高丰度油藏/成藏条件/走滑带断层/辽东湾Key words
Dongying Formation/high abundance reservoir/hydrocarbon accumulation condition/strike-slip fault/Liaodong Bay分类
天文与地球科学引用本文复制引用
张明升,杨海风,王冰洁,戴建芳,徐坤明..渤海海域辽东走滑断层转换带东营组高丰度油藏形成条件[J].地质与资源,2025,34(2):200-209,10.基金项目
中国海洋石油有限公司"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-KJ-135-ZDXM-36-TJ-08-TJ). （CNOOC-KJ-135-ZDXM-36-TJ-08-TJ）
