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| 1 | 京西坳陷周口店地区洪水庄组地球化学特征及其地质意义显示文摘洪水庄组是华北中元古界主力烃源岩之一,生烃潜力巨大,物源和沉积环境存在争议。根据微量元素及碳、氧同位素资料,分析京西坳陷周口店地区洪水庄组地球化学特征,明确物源特征及沉积环境。结果表明:京西坳陷洪水庄组物源具有多源性,陆源贡献主要分布于洪二段和洪三段。洪二段页岩明显富集高场强元素和轻稀土元素,轻、重稀土元素分异严重,反映碎屑物质可能来自华北中元古代岛弧背景下的大陆岛弧长英质物源区。洪一段沉积期,京西坳陷处于半潮湿气候下,盐度相对较高,在弱氧化—弱还原的浅水环境下形成白云岩;洪二段沉积期,气候潮湿,海侵导致京西坳陷海平面上升,碳酸盐岩台地消亡,长英质碎屑搬运至低盐、厌氧、中等分层的深水环境沉积而形成黑色页岩;洪三段沉积期,沉积环境与洪一段的类似,水体环境重新变咸但低于洪一段的,泥质白云岩沉积于弱还原、弱分层水体环境。总体上,周口店地区洪水庄组发育局限浅海相沉积,在潮湿气候的厌氧—缺氧环境下,经历海水由浅变深再变浅的沉积过程,洪二段具备烃源岩发育的最佳地质条件。该结果为京西坳陷洪水庄组古气候及古地理的重建和烃源岩的评价提供地质依据。 | 曾金华 兰晓东 司晨晨 | 2021 | 东北石油大学学报2021，45，6： | 2 |
| 2 | 华北地台中-新元古界烃源岩沉积特征及生烃潜力显示文摘随着近年来元古宇商业性原生油气藏在全球范围的不断发现,元古宙地层已逐渐成为了油气勘探重点。华北地台燕山地区是中国中—新元古界最为发育的地区之一,中—新元古界总厚可达9553 m,虽油苗等油气显示发现已久,但多年来一直未取得油气突破。为了下一步开展更具针对性的油气调查及勘探,从中、新元古代这套巨厚的沉积地层中优选出油气勘探的有利烃源岩层段就有着非常重要的意义。本文分析了华北中元古代地层中发育的暗色泥岩与微生物碳酸盐岩这两类烃源岩层的沉积特征,并初步评价了它们的生烃潜力。串岭沟组、洪水庄组与下马岭组均发育有厚层的暗色泥、页岩,总有机碳含量TOC平均值分别为0.89%、2.54%、2.82%,有机质的镜质体反射率Ro(采用为镜状体反射率Ro_(vl))值分别为2.03%、1.05%、0.63%。微生物碳酸盐岩在高于庄组、雾迷山组及铁岭组中普遍发育,其内富含微生物群落等丰富的有机质残留,发育TOC>0.2%的优质烃源岩层段。 | 张文浩 汤冬杰 杨烨 张交东 刘旭锋 王丹丹 曾秋楠 刘卫彬 | 2021 | 中国地质2021，48，5： | 1 |
| 3 | Genesis and mechanisms of organic matter enrichment of the Hongshuizhuang Formation in the Zhoukoudian area of Jingxi sag,North China显示文摘The Hongshuizhuang Formation is a Meso-Neoproterozoic high-quality source rock in the North China Craton(NCC),comprising abundant organic matter.The present study focuses on the analysis of the Hongshuizhuang Formation in the Zhoukoudian area of the Jingxi sag,discussing its genesis and mechanisms of organic matter enrichment through geological and geochemical methods.The Hongshuizhuang Formation is divided into three members from bottom to top respectively as the lower,middle and upper member.Trace elements analysis indicate that the Hongshuizhuang Formation developed restricted neritic facies in an extensional environment within a continental island arc under a post-orogenic background.The lower and upper members were deposited in a relatively shallow,strongly retained water mass within a suboxic and saline environment influenced by subhumid climate,while the middle member was deposited in an anoxic deep-water environment with relatively low salinity and weak restrictions.The PAAS-normalized rare earth element distributions of the middle and upper members show an enrichment of LREEs and a depletion of HREEs,and a low mean Y/Ho ratio with a positive Eu anomaly,indicating that the regional deposition has been affected by hydrothermal fluids.The negativeδ13 C andδ18 O values and the positive87 Sr/86 Sr values confirm that the deposition of the middle and upper members was accompanied by crustal hydrothermal activities.Accumulation of organic matter and enrichment of Baxsand P indicate that productivity is the basis of organic matter enrichment in the Hongshuizhuang Formation,where high-quality source rocks are concentrated in the middle member.In addition,reduced water mass controls the preservation of organic matter.Hydrothermal activity,humid climate,and salinity support a higher primary productivity and the formation of reduced water masses.However,due to limitations in depth,the high-quality source rocks in the Jingxi sag are thinner than the Jibei sag. | Jin-Hua Zeng Xiao-Dong Lan Hao Liu Yu-Shuai Wei | 2022 | Journal of Palaeogeography2022，11，4： | 0 |
| 4 | 燕辽裂陷槽辽西坳陷中元古界黑色页岩沉积环境和生烃潜力显示文摘[目的]前人对中元古代生命演化、氧气含量、古海洋条件等研究均表明中元古代存在适宜优质烃源岩生成和保存的环境。加之近年来元古宇油气资源的相继发现,使得我国中元古界黑色页岩沉积环境和生烃潜力的认识亟需加强。华北地台燕辽裂陷槽沉积了巨厚的中新元古代地层,发育串岭沟组、高于庄组、洪水庄组、铁岭组和下马岭组5套烃源岩层系,前人在冀北地区对这些烃源岩层系已开展了大量研究,但是目前对辽西坳陷研究还处于初级阶段。[方法]基于大量的野外露头、钻井、薄片和有机地球化学数据对辽西坳陷洪水庄组、铁岭组和下马岭组这三套烃源岩层系开展了沉积环境和生烃潜力分析。[结果]洪水庄组主要为一套富含有机质的黑色页岩,黄铁矿非常发育,指示海槽深水沉积。多个露头点在洪水庄组顶部见白云岩滑塌沉积,表明水深向上变浅,逐渐过渡为碳酸盐岩台地斜坡沉积环境。铁岭组底部广泛发育高能颗粒白云岩沉积,中部以灰色页岩为主,局部地区灰色页岩与含锰白云岩交互沉积,顶部为叠层石白云岩和泥岩互层,反映碳酸盐岩台地边缘—潟湖—潮坪沉积环境,并同洪水庄组组成了两个整体水深向上变浅的沉积旋回。待建系下马岭组底部发育石英砂岩、中上部则以灰色页岩沉积为主,为无障壁碎屑海岸—浅海陆棚沉积。有机地球化学数据表明多数黑色页岩TOC含量大于1.0%,为中到优质烃源岩,Tmax介于435℃~480℃,指示烃源岩处于成熟阶段,有利于油气的生成。[结论]中元古界黑色页岩沉积环境和生烃潜力综合分析表明,辽西坳陷具有良好的油气勘探潜力。 | 姜在兴 徐杰 刘桐 马代鑫 牟汉生 孙守亮 | 2023 | 沉积学报2023，41，6： | 0 |
| 5 | 河北省北部富有机质页岩的页岩气潜力研究显示文摘为满足当前国内页岩气勘探开发需求,亟需完善富有机质页岩勘探开发理论。以河北省北部富有机质页岩样品为依托进行岩石热解、XRD全岩矿物分析、扫描电镜、甲烷等温吸附等实验,以期探明研究区古老地层富有机质页岩的页岩气潜力。研究发现:研究区下马岭组和洪水庄组烃源岩发育较好,有较好的生排烃潜力;页岩孔隙特征整体复杂,储层物性为低孔低渗,富集储存条件较好。又创新性研究了页岩含气性与岩相类型的关系,结果表明层状页岩含气性优于块状页岩。该研究成果丰富了页岩气富集理论,并指明了研究区富有机质页岩的页岩气勘探开发潜力较大,可为下一步有效开发提供理论指导。 | 封宇博 刘友南 邓春涛 梁博 | 2024 | 石油化工应用2024，43，1： | 0 |
| 6 | Organic Geochemical Characteristics of Source Rocks of Hongshuizhuang Formation in the Mengjiawopu Section of Lingyuan-Ningcheng Basin in North China显示文摘Through the regional geological survey,outcrop section measurement and other field geological work,a block of black shale is found at the outcrop of Mengjiawopu Section of Hongshuizhuang Formation in Jixian County,and organic geochemical source rock analysis and evaluation methods are used to study the source rocks in Hongshuizhuang Formation.The set of source rocks is mainly gray-black silty mudstone and gray-black shale,with a cumulative thickness of 78 m;the total organic matter(TOC)is generally high,with an average content of 1.35%,of which good and rich source rock samples account for 86%.A combined analysis of the stable carbon isotope of kerogen,the correlation between Pr/nC17 and Ph/nC18,and the ratio of saturated hydrocarbon to aromatic hydrocarbon identifies that the organic matter is mainly TypeⅡkerogen;the equivalent vitrinite reflectance R o of organic matter is from 1.68%to 1.94%.R c,the correlation of the methylphenanthrene index(MPI)against the vitrinite reflectance is from 1.63%to 1.81%,with an average of 1.71%,and the Odd/Even Predominance(OEP)value is between 0.87 and 1.11,both indicating that the source rocks of the Hongshuizhuang Formation are at the stage of high to over maturation.In summary,the set of source rocks in Hongshuizhuang Formation is characterized by high organic matter content,good kerogen types,and high to over maturation stage. | Quan Xiong Youjun Tang Wenming Zong Shouliang Sun Daxiang He Feng Wang | 2019 | Open Journal of Yangtze Oil and Gas2019，4，3： | 0 |
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