饶阳凹陷肃宁洼槽对蠡县斜坡供烃潜力的地球化学证据  

Geochemical evidence of the hydrocarbon supply potential of Suning Sub-sag for Lixian Slope in Raoyang Sag

作　　者：张锐锋 曹兰柱 付健[3] 刘宗堡[3] 陈柯童 孙永河[3] 秦梦华 李依航 曹松 ZHANG Ruifeng;CAO Lanzhu;FU Jian*;LIU Zongbao;CHEN Ketong;SUN Yonghe;QIN Menghua;LI Yihang;CAO Song(PetroChina Huabei Oilfield Company,Renqiu 062552,Hebei,China;Research Institute of Exploration and Development,PetroChina Huabei Oilfield Company,Renqiu 062552,Hebei,China;College of Geoscience,Northeast Petroleum University,Daqing 163318,Heilongjiang,China;The Fifth Oil Production Plant of PetroChina Huabei Oilfield Company,Xinji 052360,Hebei,China)

机构地区：[1]中国石油华北油田公司,河北任丘062552 [2]中国石油华北油田公司勘探开发研究院,河北任丘062552 [3]东北石油大学地球科学学院,黑龙江大庆163318 [4]中国石油华北油田公司第五采油厂,河北辛集052360

出　　处：《地球化学》2023年第5期595-604,共10页Geochimica

基　　金：国家自然科学基金项目(42172161)资助。

摘　　要：蠡县斜坡是饶阳凹陷重要的油气探区,其油气来源问题一直是勘探关注的重点,特别是斜坡南部的油源问题一直存在争议。本研究通过开展任西–肃宁洼槽烃源岩评价及地球化学特征分析、蠡县斜坡原油油源分析和运移路径示踪,证实了肃宁洼槽对斜坡南部的供烃潜力,并明确了蠡县斜坡不同区域油源。蠡县斜坡原油可分为3类,其中:A类原油由淀北洼槽E_(s4)-Ek烃源岩供烃,主要分布在蠡县斜坡北部;B类原油由任西洼槽Es_(1)^(下)烃源岩供烃,主要分布在斜坡北中部;C类原油位于蠡县斜坡中南部,油源分析及芳烃运移示踪参数指示其由肃宁洼槽Es_(1)^(下)烃源岩供烃。蠡县斜坡中南部油藏油源的明确,从源的角度证实了肃宁洼槽对蠡县斜坡中南部的供烃能力,为蠡县斜坡南部的勘探提供了有力的证据,对斜坡南部勘探具有重要指导意义。The Lixian Slope,an important area for oil and gas exploration in the Raoyang Sag,has been a focal point of exploration research on its oil sources,particularly in the southern part of the slope,where its origin has been the subject of debate.This study confirmed the hydrocarbon supply potential of the Suning sub-sag to the south of the slope through the evaluation of source rocks and analysis of the geochemical characteristics of the source rocks of the Renxi-Suning sub-sag,oil source analysis,and migration path tracing of crude oil within the Lixian Slope.The study identifies distinct oil sources from different regions of the Lixian Slope,which can be divided into three types:Type A,primarily sourced from the E_(s4)-Ek source rock in the Dianbei sub-sag and mainly distributed in the northern part of the Lixian slope;Type B,primarily sourced from the E_(s1)^(x ) source rock in the Renxi sub-sag,predominantly found in the north-central part of the slope;and Type C,located in the middle-southern part of the Lixian slope,with oil source analysis and aromatic hydrocarbon migration tracer parameters indicating that it is the E_(s1)^(x ) source rock of the Suning sub-sag.The validation of the source origin of C-type crude oil confirms the hydrocarbon supply capacity of the Suning sub-sag to the southern Lixian slope,provides solid evidence for the exploration of the southern Lixian slope,and has important guiding significance for further exploration of the southern slope.

关 键 词：生物标志化合物 油源对比 运移示踪 蠡县斜坡 肃宁洼槽 

分 类 号：P618.13[天文地球—矿床学]