大庆石油地质与开发2018，Vol.37Issue(2)：1-8,8.DOI:10.19597/J.ISSN.1000-3754.201711035
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
摘要
Abstract
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 and Gulong 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 H32、H31、H23、H22、H21 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 H31 → H23→ H22 in Gulong area gradually increases,the oil and gas range of H21 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 accumulation characteristics have provided the theoretical evidences for the optimization of the next step of the exploratory target block.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Key words
sedimentary characteristic/hydrocarbon accumulation/South Placanticline-Gulong area/Heidimiao oil layer/sequence layer/stratum/stratigraphy/sandbody distribution分类
能源科技引用本文复制引用
靳雪燕,梁江平,黄清华,王始波,霍岩..长垣南部—古龙地区黑帝庙油层沉积特征及成藏响应[J].大庆石油地质与开发,2018,37(2):1-8,8.基金项目
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). （2016E-0211）
