摘要
松辽盆地和渤海湾盆地普遍发育低幅度、线性分布的正向构造,依附于断裂、斜坡和大背斜翼部发育。这种正向构造整体不能自成圈闭但对油气分布有着强烈的控制作用,是重要的勘探目标。通过构造特征分析将其归为构造脊,并细分为断背脊、鼻状脊和断块脊3种类型,确定了构造脊的脊线、长度、幅度、宽度、面积5个几何要素,丰富了构造脊的内涵。通过研究构造脊对油气成藏的控制作用,探讨了构造脊控藏理论,指出构造脊是油气输导的优势通道,建立了构造脊与薄储层、窄河道配置的油气成藏模式。通过在松辽盆地杏西—哈尔温地区和江桥地区中—浅层油气勘探中应用构造脊地震识别技术,发现并落实了一批构造脊勘探目标,多口井获得高产油流,拓展了油气勘探领域,支撑了大庆油田在中—浅层油气勘探中取得显著成效。
Positive structures with low amplitude and linear distribution are generally developed in Songliao Basin and Bohai Bay Basin,which are attached to faults,slopes and large anticlinal flanks.This kind of positive structures cannot form a trap by itself as a whole,but it has a great control over the oil and gas distribution,so it is an important target for oil and gas exploration.Based on the analysis of structural characteristics,the positive structures are classified as structural ridge and subdivided into three types,i.e.,faulted anticline ridge,nose-like ridge and fault block ridge.Five geometric elements,i.e.,the ridge line,length,amplitude,width and area of the structural ridge are determined,thus enriching the connotation of structural ridge.Through studying the control effect of structural ridge on hydrocarbon accumulation,the paper explores the accumulation control theory of structural ridge,points out that structural ridge is the predominant pathway for hydrocarbon transportation,and establishes a hydrocarbon accumulation mode based on the configuration of structural ridges and thin reservoirs or narrow river courses.By applying seismic identification technology of the structural ridge to hydrocarbon exploration in the middle-shallow strata in Xingxi-Harwen area and Jiangqiao area of Songliao Basin,a number of exploration targets related to structural ridge have been discovered and determined,and a number of wells have been achieved high yield industrial oil flow.That has expanded the oil and gas exploration fields,and supported Daqing oilfield to achieve remarkable results in middle-shallow oil and gas exploration.
作者
冯许魁
何文渊
胡少华
常德双
党虎强
庞彦明
周赏
李凯
柯钦
沈亚
郭波
安鹏
刘剑伦
刘冬民
潘良云
Feng Xukui;He Wenyuan;Hu Shaohua;Chang Deshuang;Dang Huqiang;Pang Yanming;Zhou Shang;Li Kai;Ke Qin;Shen Ya;Guo Bo;An Peng;Liu Jianlun;Liu Dongmin;Pan Liangyun(CNPC Geophysical Company Limited,Hebei Zhuozhou 072750,China;Daqing Oilfield Limited Company,Heilongjiang Daqing 163002,China)
出处
《石油学报》
EI
CAS
CSCD
北大核心
2022年第8期1065-1077,共13页
Acta Petrolei Sinica
基金
中国石油天然气股份有限公司“十四五”前瞻性基础性战略性技术攻关课题项目“页岩油气地震地质工程一体化储层评价关键技术研究”(2021DJ3705)资助。
关键词
构造脊
松辽盆地
成藏模式
复合圈闭
勘探目标
structural ridge
Songliao Basin
accumulation mode
combination trap
exploration target
