海洋地质前沿2024，Vol.40Issue(3)：31-37,7.DOI:10.16028/j.1009-2722.2023.049
环渤中凹陷挥发性原油特征及其主控因素
Characteristics and main controlling factors of volatile oil in the surrounding areas of Bozhong Sag
摘要
Abstract
To investigate the characteristics,main controlling factors,and favorable zones of volatile crude oil in the Bozhong Sag and surrounding areas,we analyzed statistically the data of crude oil composition characteristics and physical properties of many oilfields and oil-bearing structures in Bozhong Sag and its surrounding areas by means of crude oil group composition analysis,crude oil physical property analysis,experimental analysis of PVT high-pressure physical property and other technical means.Then,the characteristics of"five high and three low"of volatile oil in Bozhong Sag and the numerical range of each characteristic are defined.Based on the mechan-ism of multicomponent phase change,we determined three main controlling conditions on the development of volatile crude oil in Bozhong Sag.The first,after high thermal evolution,high-quality source rocks could provide light-hydrocarbon components for volatile crude oil.The second,the buried depth of Bozhong Sag is large,and the high-temperature and-pressure conditions could satisfy the storage conditions of volatile crude oil.And the third,the regional mudstone caprock formed by rapid subsidence in Bozhong Sag was an important condition fa-vorable for the preservation of volatile crude oil.Based on the temperature pressure gradient of Bozhong Sag,we suggested that the strata in burial depth of 2.5～4.3 km with regional mudstone capping in Bozhong Sag and its surrounding areas shall be targeted for volatile oil reservoirs.关键词
挥发性原油/物性特征/温压条件/优质烃源岩/泥岩盖层/渤中凹陷Key words
volatile oil/physical characteristics/temperature and pressure conditions/high quality source rock/mudstone caprock/Bozhong Sag分类
海洋科学引用本文复制引用
岳军培,黄晓波,王飞龙,江涛,赵婧,程鑫..环渤中凹陷挥发性原油特征及其主控因素[J].海洋地质前沿,2024,40(3):31-37,7.基金项目
国家科技重大专项课题"大型油气田及煤层气开发"(2016ZX05024) （2016ZX05024）
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-KJ 135 ZDXM 36 TJ 08 TJ) （中国）
