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1.
松辽盆地布海-合隆地区天然气烃源岩特征及资源量计算 总被引：1，自引：0，他引：1
布海—合隆地区是松辽盆地东南隆起区重要的天然气资源产地之一,天然气资源尚处于勘探中期。从烃源岩的有机质类型、丰度、演化特征、烃源岩分布和生烃潜力评价等五个方面说明该区的烃源岩特征,认为沙河子组—营城组的烃源岩具有较好的生烃能力,而登娄库组的生烃能力一般。热解规律显示,当埋深超过2600m左右,开始大量生气,并且高成熟阶段以湿气为主,而过成熟阶段以干气为主。在分析烃源岩特征的基础上,结合氯仿沥青“A”、有机炭、降解率、排烃系数、聚集系数、暗色泥岩有效面积和厚度等参数,应用残烃和热模拟两种方法分别计算了布海—合隆地区登娄库组和沙河子组一营城组的天然气资源量。 相似文献
2.
鄂尔多斯盆地上古生界灰岩烃源岩生烃潜力评价 总被引：1，自引：0，他引：1
对于鄂尔多斯盆地上古生界海陆过渡相灰岩能否生烃及生烃潜力有多大,目前研究较少.通过岩石热解、总有机碳测定、干酪根碳同位素及有机显微组分的测定实验,同时结合镜质体反射率的测定,综合评价了灰岩烃源岩,并分析了其生排烃特征.结果显示:从有机质丰度角度,本溪组为差的烃源岩,山西组为差-一般的烃源岩、太原组为一般-好的烃源岩;从有机质类型角度,本溪组为Ⅲ型,山西组以Ⅲ型为主同时混有少量Ⅱ2型,太原组为Ⅱ2-Ⅲ型;从有机质成熟度角度,本溪组处于成熟-高成熟阶段,太原组及山西组均处于高成熟阶段.根据排烃门限理论,认为Ro为1.6%时,天然气大量生成.考虑到灰岩烃源岩的特殊性、成熟度及其排烃特征,综合认为太原组灰岩可以成为天然气的有效烃源岩. 相似文献
3.
哈尔滨东宾县凹陷白垩纪地层层序及其与松辽盆地的对比 总被引：1，自引：0，他引：1
根据实测剖面并结合前人研究成果厘定了宾县凹陷白垩纪地层层序:下白垩统板子房组、宁远村组、淘淇河组、泉头组和上白垩统青山口组、姚家组。综合运用岩性地层、生物地层、地质事件和同位素年龄的方法将宾县凹陷白垩系与松辽盆地进行了对比。根据同位素年龄对比,板子房组相当于沙河子组上部和营城组下部,宁远村组相当于营城组中上部。根据植物化石组合分析,淘淇河组可与营城组顶部、登娄库组和泉头组底部对比。“鸟河组”下部红层作为区域性气候事件的产物可与泉头组下部对比;该组以Triangulicypristorsuosus和Triangulicypristorsuosusvar.nota繁盛为特征的介形类化石组合与青山口组相似,轮藻类化石Atopocharatrivolvis、Aclistocharasongliaoensis和Obtusocharaniaoheensis在泉头组至嫩江组均有发现;因此将“鸟河组”分解为泉头组、青山口组、姚家组和嫩江组。 相似文献
4.
营城盆地位于松辽盆地东缘,其地层可与松辽盆地地层对比。营城盆地层序（三级）地层应与松辽盆地Ⅰ-VI和IX、X层序（火石岭组、沙河子组、营城组、登娄库组和泉头组）地层相对应,营城盆地地层应该划分为侏罗系上统火石岭组（J3h）;白垩系下统沙河子组（k1sh）、营城组（k1y）、泉头组（k1q）;第四系（Q）。主要可采工业煤层产在沙河子组。 相似文献
5.
根据实测剖面并结合前人研究成果厘定了宾县凹陷白垩纪地层层序:下白垩统板子房组、宁远村组、淘淇河组、泉头组和上白垩统青山口组、姚家组.综合运用岩性地层、生物地层、地质事件和同位素年龄的方法将宾县凹陷白垩系与松辽盆地进行了对比.根据同位素年龄对比,板子房组相当于沙河子组上部和营城组下部,宁远村组相当于营城组中上部.根据植物化石组合分析,淘淇河组可与营城组顶部、登娄库组和泉头组底部对比.“鸟河组“下部红层作为区域性气候事件的产物可与泉头组下部对比;该组以Triangulicypris torsuosus和Triangulicypris torsuosus var.nota繁盛为特征的介形类化石组合与青山口组相似,轮藻类化石Atopochara trivolvis、Aclistochara songliaoensis和Obtusochara niaoheensis在泉头组至嫩江组均有发现;因此将“鸟河组“分解为泉头组、青山口组、姚家组和嫩江组. 相似文献
6.
对松辽盆地西南部金宝屯-吉尔嘎朗地区金D1井九佛堂组烃源岩的有机地球化学、生物标志化合物特征进行了系统评价,结果表明：金D1井九佛堂组暗色泥岩为差-中等烃源岩,有机质类型为Ⅱ型干酪根,处于低熟-成熟阶段;正构烷烃以"前锋型"的单峰型分布为主,主峰碳数为C18和C19,奇偶碳优势不明显;Pr/Ph值介于0.24~0.46,伽玛蜡烷指数介于0.11~0.32,指示烃源岩形成于还原条件下淡-微咸水湖相沉积环境;C27-C28-C29规则甾烷分布特征略有差异,反映有机质为混合来源.总体有机地球化学特征表明金D1井九佛堂组烃源岩具有一定的生烃潜力. 相似文献
7.
松辽盆地长岭断陷烃类气藏的分布主要受烃源岩分布和断裂发育特征两种因素控制。早期气藏的形成主要受控于烃源岩的分布,形成的是原生气藏;晚期气藏的形成主要是因为有沟通气源(沙河子组和营城组烃源岩)和圈闭的断裂作为油气运移的通道,形成的是次生气藏。目前已发现的主要含气构造(哈尔金、大老爷府及双坨子构造)在营城组末期已见雏形,大多数构造定型于嫩江末期,含气构造形成时间早于主生烃时间。伏龙泉构造形成于嫩江时期,定型于古近纪末期。烃类气藏主要形成于青山口—嫩江时期。营城组火山岩和登娄库—泉头组一、二段的碎屑岩储集层是未来烃类气勘探的主要目标。 相似文献
8.
哈尔滨东宾县凹陷白垩纪地层层序及其与松辽盆地的对比 总被引：4，自引：0，他引：4
根据实测剖面并结合前人研究成果厘定了宾县凹陷白垩纪地层层序:下白垩统板子房组、宁远村组、淘淇河组、泉头组和上白垩统青山口组、姚家组.综合运用岩性地层、生物地层、地质事件和同位素年龄的方法将宾县凹陷白垩系与松辽盆地进行了对比.根据同位素年龄对比,板子房组相当于沙河子组上部和营城组下部,宁远村组相当于营城组中上部.根据植物化石组合分析,淘淇河组可与营城组顶部、登娄库组和泉头组底部对比."鸟河组"下部红层作为区域性气候事件的产物可与泉头组下部对比;该组以Triangulicypris torsuosus和Triangulicypris torsuosus var.nota繁盛为特征的介形类化石组合与青山口组相似,轮藻类化石Atopochara trivolvis、Aclistochara songliaoensis和Obtusochara niaoheensis在泉头组至嫩江组均有发现;因此将"鸟河组"分解为泉头组、青山口组、姚家组和嫩江组. 相似文献
9.
10.
烃源岩是油气生成的物质基础,白垩系烃源岩以29%的比例居全球各层系之首。通过古地磁与地理信息数据耦合,以及对所有白垩系烃源岩层位数据的统计和对比,恢复了白垩系烃源岩的分布特征,分析了其发育环境。结果表明：(1)白垩系烃源岩主要发育于阿普特阶—土伦阶(占白垩系烃源岩的52 63%)。(2)白垩系烃源岩主要发育于2种构造、沉积环境：陆表海环境(非典型被动陆缘)和裂谷环境。(3)白垩纪早期,烃源岩干酪根以Ⅰ型为主;白垩纪中期,烃源岩干酪根过渡为以Ⅱ型为主,Ⅰ型较少;白垩纪晚期,Ⅲ型干酪根烃源岩迅速增多。(4)白垩纪大陆裂解边缘出现富有机质沉积,上升流促进生物繁盛,高温、干旱的气候使陆表浅海区盐度较高,其还原环境有利于烃源岩的保存。 相似文献
11.
Ling Zan Zhihuan Zhang Jiajia Fei Yuyuan Wu Zhenying Zhang Liming Qin Ling Mei Wenhao Li 《中国地球化学学报》2011,30(2):255-263
Through natural gas exploration in the Changling Fault Depression,abundant natural gas flows were obtained and high-quality source rocks were also reveiled.Based on bulk analyses,organic matter abundance,organic matter type and thermal maturity of the source rocks were studied systematically.At the same time,gas gener-ating intensity and gas generating quantity were quantitatively analyzed by using basin modeling technologies.The results indicated that gas source rocks of the Shahezi Formation are characterized by abundant organic matter and dark mudstone distributions and high-over thermal maturity.They possess high gas generating intensity with the biggest value surpassing 500×108 m3/km2,and large gas generating quantity,accounting from 74.40% of the total amount.The Yingcheng Formation has good gas-source rocks with moderate dark mudstone and relatively high organic matter.It has type-Ⅲ organic matter and low-over thermal maturity.The gas generating intensity is moderate,between 20×108 and 60×108 m3/km2.The gas generating quantity is 13.63% of the total amount.The Huoshiling Formation has relatively good source rocks with limited dark mudstone and low organic matter.It has type-Ⅲ kerogen and over-thermal maturity.The gas generating quantity is 7.10% of the total amount.The Denglouku Formation has poor-gas source rocks,and is characterized by undeveloped dark mudstone and low organic matter abundance.It has type-Ⅲ organic matter and low-high thermal maturity.Hydrocarbon gases in the Changling Fault Depression mainly originated from the Shahezi Formation,and secondarily from the Yingcheng Formation.The contribution of the Huoshiling Formation gas source rocks is relatively small. 相似文献
12.
This work aims to reconstruct the burial history of various kinds of sandstones penetrated by the well YS201 in the Yaoyingtai region of the Changling Fault Depression, southern Songliao Basin, China. Analyses of fluid inclusions in the reservoir rocks, combined with a review of the regional tectonic evolution, revealed the hydrocarbon accumulation stage and accumulation age of the Early Cretaceous Denglouku group and the first member of the Quantou group reservoir, which are the future exploration focus for deep gas reservoirs in this region. Acoustic time data and sedimentary rates calculated for sediments in the YS201 well yielded thicknesses for the Yingcheng, Nenjiang, and Mingshui groups of 506, 539.18, and 144.85 m, respectively, thereby revealing the burial history of the sediments in the well. Fluid inclusions of the Denglouku group reservoir and the first member of the Quantou group reservoir contain oil inclusions and hydro-carbonaceous salt water inclusions. The main peaks of the homogenization temperature and salinity of these saltwater inclusions in the first member of the Quantou group reservoir are generally 110–120℃ and 6 wt % –8 wt %, respectively, and for the Denglouku group are 130–140℃ and 4 wt%–6 wt%. The data for both reservoirs show only one main peak, indicating that they both have experienced single-stage accumulation. Combining the homogenization temperature of the reservoir fluid inclusions with the burial and thermal history of the sediments in the YS201 well, we infer that the hydrocarbon gas in these two intervals accumulated at 79 Ma(middle Late Cretaceous). 相似文献
13.
松北宾县—绥化地区下白垩统沉积相研究 总被引：4，自引：0，他引：4
松北宾县—绥化地区下白垩统发育沙河子组、营城组、登娄库组三套沉积地层,四个断陷区块。通过对其地震反射层的振幅、连续性、内部结构、外部形态的特征研究分析发现,该区下白垩统发育六种类型的地震相。重点根据地震相的平面分布规律,综合钻井、测井、录井资料及野外露头分析研究,该区下白垩统主要发育冲积扇、河流相、扇三角洲、辫状河三角洲、湖泊相及火山岩相六种类型的沉积相。通过分析不同沉积地层沉积相的平面展布特征及发育情况,认为松北宾县—绥化地区下白垩统沉积主要以断陷期的粗粒充填为主,沉积物源受深大断裂控制,主要来自于各断陷靠近断裂的陡坡带。断陷深部的细粒沉积物有利于烃源岩的发育,上覆的粗粒沉积物又可作为油气的有利储层,预测宾县断陷和北安断陷为该区今后油气勘探的重点区块。 相似文献
14.
Wei Yan Tailiang Fan Hongyu Wang Chen Zhu Zhiqian Gao Xiangjie Meng Yangzi Sun Fan Yang 《地学前缘(英文版)》2017,8(1):93-106
Diverse and abundant microfossils, such as palynomorphs, algae and Ostracoda, were collected from lower Cretaceous strata of Lishu depression, located in southeastern Songliao basin, and were identified and classified in order to provide relevant, detailed records for paleoclimate research. The early Cretaceous vegetation and climate of southeastern Songliao basin have been inferred from the analysis of palynomorph genera, algae and Ostracoda of the LS1 and SW110 wells. The lower Cretaceous strata include, in ascending stratigraphic order, the Shahezi, Yingcheng and Denglouku formations. Palynological assemblages for each formation, based on biostratigraphic and statistical analyses, provide an assessment of their longitudinal variations. During deposition of the Shahezi Formation, the climate was mid-subtropical. Vegetation consisted of coniferous forest and herbage. During deposition of the Yingcheng Formation, the climate was south Asian tropical. Vegetation consisted mainly of coniferous forest and herbal shrub. In addition, fresh and saline non-marine water dominated the lacustrine setting during deposition of these formations. Deposition of the Denglouku Formation, however, occurred under a hot and dry tropical climate. The vegetation was mostly coniferous forest and lake waters became saline. Palaeoclimate variation is correlated by the lake level change and the development of sedimentary facies. Palaeoclimate contribute to the formation of hydrocarbon source rocks and reservoir. 相似文献
15.
东尼日尔盆地是中西非裂谷系中典型的中—新生代裂谷盆地。Tenere坳陷位于盆地西北部,包括西部凹陷、东Ⅰ凹陷和东Ⅱ凹陷。对Saha-1井上白垩统岩屑样品的分析揭示,干酪根显微组分以不发荧光或弱荧光的无定形体为主,岩石抽提物中C29甾烷优势明显,说明该井上白垩统泥岩有机质输入以陆源植物为主。岩石热解分析表明上白垩统Yogou组泥岩大多数为中等—好烃源岩,有机质以Ⅱ2-Ⅲ型为主,Donga组泥岩大部分为差—中等烃源岩,以Ⅲ型为主;岩石热解峰温指示烃源岩成熟门限深度为2300 m左右。生烃史模拟显示,Saha-1井Yogou组泥岩尚未开始生烃,Donga组在白垩纪末期开始生烃,下部已进入生气阶段。综合研究认为Tenere坳陷的西部凹陷勘探潜力较大,而东Ⅰ凹陷和东Ⅱ凹陷潜力有限。 相似文献
16.
Early Cretaceous Palynological Assemblages of the Shuangliao Fault Depression, Songliao Basin and their Geological Implications 总被引：2，自引：1，他引：1
The pollen and spores found in the Early Cretaceous strata of two cores from the Shuangliao Fault Depression were studied systematically, and two palynological assemblages have been recognized. Assemblage Ⅰ from the Yingcheng Formation is named Paleoconiferus-Pinuspollenites; the assemblage is characterized by an extremely high content of Paleoconifer pollen. Assemblage Ⅱ from Member 1 of the Denglouku Formation is named Cicatricosisporites-Cyathidites-Pinuspollenites; the assemblage is characterized by the abundant presence of Laevigati spores, but less Paleoconifer pollen. According to the palynological data and zircon U-Pb dating, the geological age of the Yingcheng Formation is thought to be Aptian-Albian, and that of the Denglouku Formation is thought to be Early Albian. On the basis of the composition of each assemblage, we can infer that during the depositional period of the Yingcheng Formation, the paleovegetation was mainly conifer forest, the paleoclimate was consistent with the temperate climate of today, and the paleoenvironment was humid feature. During the depositional period of Member 1 of the Denglouku Formation, the paleovegetation was mainly conifer forest and shrubs, the paleoclimate was consistent with the subtropical climate of today, and the paleoenvironment was humid. The results significantly improve our understanding of the stratigraphy in the Shuangliao Fault Depression, provide biostratigraphic evidence for the division and correlation of Early Cretaceous strata in the Shuangliao Fault Depression, and provide new data for analyzing paleovegetation and paleoclimate in the Songliao Basin. 相似文献
17.
松辽盆地南部长岭地区青山口组原油的地球化学特征及油源分析 总被引：4，自引：5，他引：4
松辽盆地南部长岭地区中、新生界地层中有登娄库组、营城—火石岭组、青山口组、嫩江组 4套主要烃源层 ,目前已在长岭地区北部及东部地区的青山口组中发现了工业性的油气层或含油气显示。分析了主要烃源层的分布特征和地球化学条件 ,并系统地剖析了青山口组原油的地球化学特征。结果表明 ,青山口组存在两类地球化学特征不同的原油 (Ⅰ类、Ⅱ类 ) ,其中Ⅰ类原油主要分布在大情字井的青二段—青三段的中部 ,Ⅱ类原油主要分布在大情字井的青二段—青三段的上部及大老爷府—双坨子构造中。通过油源对比分析表明 ,Ⅰ类原油主要来源于青山口组的中部 (青二段、青三段 ) ,并与储层互层的烃源岩。Ⅱ类原油与青山口组下部的青一段烃源岩有很好的对应关系 ,推测其油源主要为这套烃源岩 ,其次可能是下白垩统烃源岩 ,嫩江组烃源岩的贡献不大。 相似文献
18.
准噶尔盆地西南缘四棵树凹陷主要分布侏罗系、白垩系和古近系3套潜在烃源岩,其中侏罗系八道湾组烃源岩有机质丰度较高,有机质类型以Ⅲ型为主,部分为Ⅱ2型,生烃潜力较高;三工河组烃源岩有机质丰度、类型明显偏差,生烃潜力较低;西山窑组泥岩有机质丰度较高,但由于受西山窑组沉积末期构造抬升导致地层剥蚀的影响,烃源岩厚度较小,总体上生烃条件较差;白垩系烃源岩在四棵树凹陷最大厚度可达300 m,处于低熟阶段,生烃潜力较小;古近系烃源岩有机质丰度较高、类型好,但成熟度偏低,生烃条件较差。侏罗系八道湾组烃源岩处于主要生油阶段;白垩系烃源岩已达到生烃门限,处于低熟—中等成熟阶段;古近系烃源岩成熟度偏低,目前仍处于未熟到低熟阶段。油源对比表明,四棵树凹陷北部斜坡及车排子凸起带原油主要来源于四棵树凹陷及沙湾凹陷侏罗系烃源灶,后期受到白垩系低熟油源灶的侵染,古近系烃源岩的油源贡献有限。 相似文献