长垣南部—古龙地区黑帝庙油层沉积特征及成藏响应  

SEDIMENTARY CHARACTERISTICS AND HYDROCARBON ACCUMULATION RESPONSE OF HEIDIMIAO OIL RESERVOIRS IN SOUTH PLACANTICLINE-GULONG AREA

作　　者：靳雪燕[1,2] 梁江平[2] 黄清华[2] 王始波[2] 霍岩[2] JIN Xueyan;LIANG Jiangping;HUANG Qinghua;WANG Shibo;HUO Yan(Faculty of Earth Sciences and Mineral Resources, China University of Geosciences, Beijing 100083, China;Exploration and Development Research Institute of Daqing Oilfield Co Ltd. , Daqing 163712, China)

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2018年第2期1-8,共8页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司重大科技专项"深层天然气高效开发技术研究与应用"(2016E-0211)

摘　　要：黑帝庙油层是目前松辽盆地北部勘探程度最低的油层,近来长垣及古龙地区多口探井在黑帝庙油层获得了工业油气流,展示了良好的勘探前景。为了进一步明确其成藏特征及有利勘探目标区,应用录井、测井、试油、地球物理等相关资料,对长垣南部—古龙地区黑帝庙油层开展了层序地层、沉积相、砂体及含油气性研究。研究结果表明,该区黑帝庙油层嫩江组二、三段为湖泊—三角洲沉积环境,嫩二段底界(T07反射界面)为最大湖泛面,随后基准面开始下降,湖盆范围逐渐缩小,在东北部物源的持续供给下形成嫩二段—嫩三段的进积型三角洲前缘相沉积体系。在嫩二段上部—嫩三段识别出5个准层序组:H23、H13、H32、H22、H12,分别对应了三角洲前缘相的五次进积,使得砂体在纵向上呈现出从下往上逐层叠覆分布的特征。各层砂体的规模不同,控制了油气的分布范围:纵向上,油气优先富集于下部砂层组,为纯油层,向上过渡为油水同层;平面上,纯油层从东向西迁移并赋存于单井最下部砂层组;同时,由于三角洲前缘相砂体的推进,古龙地区H13→H32→H22含油范围逐渐增大,H12由于离源岩较远,含油范围减小,至H1油层组油气分布寥寥。对黑帝庙油层沉积和成藏特征的研究,为下一步勘探目标区的优选提供理论依据。Heidimiao oil layers are the reservoirs with the lowest degree of the exploration in North Songliao Basin at present.In recent years,the industrial oil and gas flows have been achieved in the reservoirs of many exploratory wells in the Placanticline and Gulong area,which have revealed much better exploration prospects.In order to further ensure the accumulation characteristics and favorable exploration target block,by making use of the mud logging,well logging,well test,geophysical data and so on,the sequence layer/stratigraphy,sedimentary facies,sandbody and hydrocarbon-bearing properties were researched for Heidimiao oil layers in South Placanticline andGulong area.The studies show that Member 2 3 of Nenjiang Formation in Heidimiao oil layers are characterized by lake-delta sedimentary environment;the bottom boundary of Member 2（Response Interface T07）is the maximal lake-flooding surface,and then the datum level begins drop,the area of the lake basin gradually decreases,and five subsequence sets named H3^2、H3^1、H2^3、H2^2、H2^1 are identified on the top of Member 2 and Member 3 of Nenjiang Formation,which respectively refer to the five times of the progradation for the delta-front facies,thus make the sandbodies overlapped vertically layer-by-layer from top to bottom,the scale of the sandbody controls the distribution of the oil and gas：vertically,the petroleum prefers to accumulate in the lower sandstone layer group i.e.net oil layer,and then upward becomes costratotype oil-water reservoir;horizontally,the net oil layer migrates from east to west and enriches at the bottom of the sandstone layer group of the individual well;at the same time,due to the progradation of the sandbody of the delta front facies,the oil and gas range of H3^1→ H2^3→ H2^2 in Gulong area gradually increases,the oil and gas range of H12 relatively decreases because it is far from the source rock,and there is little hydrocarbon distribution in Oil Group H1.The researches on Heidimiao-oil-layer sedimentation and accumulatio

关 键 词：沉积特征 成藏响应 长垣南部—古龙地区 黑帝庙油层 层序地层 砂体分布 

分 类 号：TE121.3[石油与天然气工程—油气勘探]