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Evaluation of Hydrocarbon Potential Using AVO Analysis in the FORMAT Field, Niger Delta Basin, Nigeria
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作者 Charles Chibueze Ugbor Onyebuchi Samuel Onyeabor Ifeanyi Celestine Ugwuoke 《Open Journal of Geology》 CAS 2024年第3期403-430,共28页
The study involved the evaluation of the hydrocarbon potential of FORMAT Field, coastal swamp depobelt Niger delta, Nigeria to obtain a more efficient reservoir characterization and fluid properties identification. De... The study involved the evaluation of the hydrocarbon potential of FORMAT Field, coastal swamp depobelt Niger delta, Nigeria to obtain a more efficient reservoir characterization and fluid properties identification. Despite advances in seismic data interpretation using traditional 3D seismic data interpretation, obtaining adequate reservoir characteristics at the finest level had proved very challenging with often disappointing results. A method that integrates the amplitude variation with offfset (AVO) analysis is hereby proposed to better illuminate the reservoir. The Hampson Russell 10.3 was used to integrate and study the available seismic and well data. The reservoir of interest was delineated using the available suite of petrophysical data. This was marked by low gamma ray, high resistivity, and low acoustic impedance between a true subsea vertical depth (TVDss) range of 10,350 - 10,450 ft. The AVO fluid substitution yielded a decrease in the density values of pure gas (2.3 - 1.6 g/cc), pure oil (2.3 - 1.8 g/cc) while the Poisson pure brine increased (2.3 to 2.8 g/cc). Result from FORMAT 26 plots yielded a negative intercept and negative gradient at the top and a positive intercept and positive gradient at the Base which conforms to Class III AVO anomaly. FORMAT 30 plots yielded a negative intercept and positive gradient at the top and a positive intercept and negative gradient at the Base which conforms to class IV AVO anomaly. AVO attribute volume slices decreased in the Poisson ratio (0.96 to - 1.0) indicating that the reservoir contains hydrocarbon. The s-wave reflectivity and the product of the intercept and gradient further clarified that there was a Class 3 gas sand in the reservoir and the possibility of a Class 4 gas sand anomaly in that same reservoir. 展开更多
关键词 AVO Analysis hydrocarbon potential Fluid Properties Reservoir Characterization Petrophysical Data Hampson Russel
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Turbidite Dynamics and Hydrocarbon Reservoir Formation in the Tano Basin: A Coastal West African Perspective
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作者 Michael K. Appiah Sylvester K. Danuor +1 位作者 Striggner Bedu-Addo Alfred K. Bienibuor 《International Journal of Geosciences》 CAS 2024年第2期137-161,共25页
This study examines the turbidite dynamics and hydrocarbon reservoir formation in Ghana’s Tano Basin, which is located in coastal West Africa. Through an exploration of geological processes spanning millions of years... This study examines the turbidite dynamics and hydrocarbon reservoir formation in Ghana’s Tano Basin, which is located in coastal West Africa. Through an exploration of geological processes spanning millions of years, we uncover key factors shaping hydrocarbon accumulation, including source rock richness, temperature, pressure, and geological structures. The research offers valuable insights applicable to exploration, management, and sustainable resource exploitation in coastal West Africa. It facilitates the identification of exploration targets with higher hydrocarbon potential, enables the anticipation of reservoir potential within the Tano Basin, and assists in tailoring exploration and management strategies to specific geological conditions of the Tano Basin. Analysis of fluvial channels sheds light on their impact on landscape formation and hydrocarbon exploration. The investigation into turbidite systems unveils intricate interactions involving tectonics, sea-level fluctuations, and sedimentation patterns, influencing the development of reservoirs. An understanding of sediment transport and depositional settings is essential for efficient reservoir management. Geomorphological features, such as channels, submarine canyons, and distinct channel types, are essential in this situation. A detailed examination of turbidite channel structures, encompassing canyons, channel complexes, convex channels, and U-shaped channels, provides valuable insights and aids in identifying exploration targets like basal lag, channel levees, and lobes. These findings underscore the enduring significance of turbidite systems as conduits for sediment transport, contributing to enhanced reservoir management and efficient hydrocarbon production. The study also highlights how important it is to examine the configuration of sedimentary layers, stacking patterns, and angular laminated facies to identify turbidites, understand reservoir distribution, and improve well design. The dynamic nature of turbidite systems, influenced by basin characteristics such as shape and slope, is highlighted. The research provides valuable insights essential for successful hydrocarbon exploration, reservoir management, and sustainable resource exploitation in coastal West Africa. 展开更多
关键词 Reservoir Characterization Tano Basin Seismic Data hydrocarbon potential Channels TURBIDITES
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Alteration and Reformation of Hydrocarbon Reservoirs and Prediction of Remaining Potential Resources in Superimposed Basins 被引量:4
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作者 PANG Hong PANG Xiongqi +3 位作者 YANG Haijun LIN Changsong MENG Qingyang WANG Huaijie 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2010年第5期1078-1096,共19页
Complex hydrocarbon reservoirs developed widely in the superimposed basins of China formed from multiple structural alterations, reformation and destruction of hydrocarbon reservoirs formed at early stages. They are c... Complex hydrocarbon reservoirs developed widely in the superimposed basins of China formed from multiple structural alterations, reformation and destruction of hydrocarbon reservoirs formed at early stages. They are characterized currently by trap adjustment, component variation, phase conversion, and scale reformation. This is significant for guiding current hydrocarbon exploration by revealing evolution mechanisms after hydrocarbon reservoir formation and for predicting remaining potential resources. Based on the analysis of a number of complex hydrocarbon reservoirs, there are four geologic features controlling the degree of destruction of hydrocarbon reservoirs formed at early stages: tectonic event intensity, frequency, time and caprock sealing for oil and gas during tectonic evolution. Research shows that the larger the tectonic event intensity, the more frequent the tectonic event, the later the last tectonic event, the weaker the caprock sealing for oil and gas, and the greater the volume of destroyed hydrocarbons in the early stages. Based on research on the main controlling factors of hydrocarbon reservoir destruction mechanisms, a geological model of tectonic superimposition and a mathematical model evaluating potential remaining complex hydrocarbon reservoirs have been established. The predication method and technical procedures were applied in the Tazhong area of Tarim Basin, where four stages of hydrocarbon accumulation and three stages of hydrocarbon alteration occurred. Geohistorical hydrocarbon accumulation reached 3.184 billion tons, of which 1.271 billion tons were destroyed. The total volume of remaining resources available for exploration is -1.9 billion tons. 展开更多
关键词 superimposed basin hydrocarbon reservoirs multiple structural alteration tectonic eventintensity potential resources Tarim Basin
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Strike-Slip Faults and Their Control on Differential Hydrocarbon Enrichment in Carbonate Karst Reservoirs: A Case Study of Yingshan Formation on Northern Slope of Tazhong Uplift, Tarim Basin 被引量:1
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作者 Lü Xiuxiang WANG Yafang ZHANG Yanping 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第2期761-762,共2页
Objective Oil and gas are abundant in the Ordovician Yingshan Formation carbonate karst reservoirs on the northern slope of Tazhong uplift in the Tarim Basin, and have extremely complicated oil-gas-water distribution... Objective Oil and gas are abundant in the Ordovician Yingshan Formation carbonate karst reservoirs on the northern slope of Tazhong uplift in the Tarim Basin, and have extremely complicated oil-gas-water distribution, however. The difference in burial depth of the reservoirs between east and west sides is up to 1000 m. Water-bearing formations exist between oil- and gas-bearing formations vertically and water-producing wells are drilled between oil- and gas-producing wells. Macroscopically, oil and gas occur at low positions, while water occurs at high positiona on the northern slope of Tazhong uplift. The mechanism of differential hydrocarbon enrichment in heterogeneous reservoirs is by far not clarified, which has affected the efficient exploration and development of oil and gas fields in this area. 展开更多
关键词 A Case study of Yingshan Formation on Northern Slope of Tazhong Uplift Strike-Slip Faults and Their Control on Differential hydrocarbon Enrichment in Carbonate Karst reservoirs Tarim Basin
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Regional unconformities and their controls on hydrocarbon accumulation in Sichuan Basin, sW China 被引量:1
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作者 YANG Weij WEI Guoqi +7 位作者 WU Saijun XIE Wuren JIN Hui ZENG Fuying HAO Cuiguo BAI Zhuangzhuang SU Yiqing LI Rong 《Petroleum Exploration and Development》 SCIE 2023年第3期573-587,共15页
Based on outcrop,seismic and drilling data,the main regional unconformities in the Sichuan Basin and their controls on hydrocarbon accumulation were systematically studied.Three findings are obtained.First,six regiona... Based on outcrop,seismic and drilling data,the main regional unconformities in the Sichuan Basin and their controls on hydrocarbon accumulation were systematically studied.Three findings are obtained.First,six regional stratigraphic unconformities are mainly developed in the Sichuan Basin,from the bottom up which are between pre-Sinian and Sinian,between Sinian and Cambrian,between pre-Permian and Permian,between middle and upper Permian,between middle and upper Triassic,and between Triassic and Jurassic.Especially,16 of 21l conventional(and tight)gas fields discovered are believed to have formed in relation to regional unconformities.Second,regional unconformity mainly controls hydrocarbon accumulation from five aspects:(1)The porosity and permeability of reservoirs under the unconformity are improved through weathering crust karstification to form large-scale karst reservoirs;(2)Good source-reservoir-caprock assemblage can form near the unconformity,which provides a basis for forming large gas field;(3)Regional unconformity may lead to stratigraphic pinch-out and rugged ancient landform,giving rise to a large area of stratigraphic and lithologic trap groups;(4)Regional unconformity provides a dominant channel for lateral migration of oil and gas;and(5)Regional unconformity is conducive to large-scale accumulation of oil and gas.Third,the areas related to regional unconformities are the exploration focus of large gas fields in the Sichuan Basin.The pre-Sinian is found with source rocks,reservoir rocks and other favorable conditions for the formation of large gas fields,and presents a large exploration potential.Thus,it is expected to be an important strategic replacement. 展开更多
关键词 UNConFORMITY large gas filed Sichuan Basin karst reservoir hydrocarbon accumulation control exploration potential
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CONTRAST STUDY OF OIL AND GAS EXPLORATION POTENTIAL FOR QIANGTANG, CHANGDOU AND WEST YUNNAN BASIN DURING JURASSIC
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作者 Wang Dingyi 《地学前缘》 EI CAS CSCD 2000年第S1期406-407,共2页
Qiangtang basin The north margin of the Qiangtang Basin, which located at the north Tibet region,is Lazhulong\|Xijinwulan (also named Jinshajiang River) suture zone (connect zone), and the south margin is Bangong Lake... Qiangtang basin The north margin of the Qiangtang Basin, which located at the north Tibet region,is Lazhulong\|Xijinwulan (also named Jinshajiang River) suture zone (connect zone), and the south margin is Bangong Lake—Dingqing (Nujiang River) suture zone (connect zone). The West End of the basin is gradually convergent at the West Side from Duoma about 80°meridian, and the East End may reach Muta area at about 95°meridian. According to the Jurassic strata development, the basin could be divided into three parts such the north Qiangtang depression, the Central uplift and the south Qiangtang depression as the first\|order tectonic unit. The direction of marine transgression is from the south of the basin to the north. The Jurassic strata of the basin are mainly marine sediments. The hydrocarbon source rocks occurred in Buqu Formation of the middle Jurassic and Suowa Formation of the upper Jurassic are of important potential for oil & gas exploration, and the hydrocarbon source rock in Quse Formation of the lower Jurassic for this is secondary due to localized distribution in the basin. 展开更多
关键词 QIANGTANG BASIN Changdou BASIN West Yunnan BASIN JURASSIC hydrocarbon exploration potential ConTRAST study
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A Genetic Susceptibility Study of Lung Cancer Risk Potentially Associated with Polycyclic Aromatic Hydrocarbon Inhalation Exposure
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作者 LIN Nan MU Xin Lin +7 位作者 WANG Gui Lian REN Yu Ang TANG De Liang WANG Bin LI Zhi Wen SU Shu KAN Hai Dong TAO Shu 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2017年第10期772-776,共5页
For lifetime non-smokers, lung cancer risk is mainly associated with inhalation exposure to air pollution. For the Chinese population, indoor air pollution due to solid fuel combustion has been the primary source of i... For lifetime non-smokers, lung cancer risk is mainly associated with inhalation exposure to air pollution. For the Chinese population, indoor air pollution due to solid fuel combustion has been the primary source of inhalation exposure for decades. Polycyclic aromatic hydrocarbons (PAHs) are the by-products of incomplete combustion. 展开更多
关键词 GSS A Genetic Susceptibility study of Lung Cancer Risk potentially Associated with Polycyclic Aromatic hydrocarbon Inhalation Exposure
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New concepts for deepening hydrocarbon exploration and their application effects in the Junggar Basin, NW China 被引量:1
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作者 ZHAO Wenzhi HU Suyun +2 位作者 GUO Xujie LI Jianzhong CAO Zhenglin 《Petroleum Exploration and Development》 2019年第5期856-865,共10页
The Junggar Basin is one of the major petroliferous basins with abundant oil and gas resources in onshore China.Around 2010 and thereafter,the hydrocarbon exploration for finding giant fields in the basin faced tough ... The Junggar Basin is one of the major petroliferous basins with abundant oil and gas resources in onshore China.Around 2010 and thereafter,the hydrocarbon exploration for finding giant fields in the basin faced tough difficulties:in the northwestern margin area,no significant breakthrough has been made for long since seeking to"escape from the step-fault zone and extend to the slope area";in the central part,the exploration for large lithologic-stratigraphic reservoirs stood still;since the discovery of the Kelameili gas field,no important achievement has been made in gas exploration.Under the guidance of"whole sag-oil-bearing"theory in the petroliferous basin,and based on the long-term study and thinking of the petroleum accumulation conditions and characteristics,the authors proposed several new concepts,i.e.,a"thrust-induced second-order fault step"hiding under the northwestern slope area;six"hydrocarbon migrationward surfaces"favorable for hydrocarbon accumulation;promising natural gas resource.These concepts have played an important role in the discoveries of Wells Mahu1 and Yanbei1 as well as the confirmation and expansion of Permian-Triassic billion-ton-scale petroliferous areas in Mahu.The fairway of new discoveries has also appeared for natural gas exploration in Wells Fu26,Gaotan1 and Qianshao2,suggesting that the surrounding regions of the highly matured source kitchen are of high possibility to form gas accumulations. 展开更多
关键词 second-order fault step hydrocarbon migrationward surface favorable FACIES belt lithologic-stratigraphic reservoir whole sag-oil-bearing natural gas potential and direction JUNGGAR Basin
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A PRELIMINARY EVALUATION MODEL FOR RESERVOIR HYDROCARBON-GENERATING POTENTIAL ESTABLISHED BASED ON DISSOLVED HYDROCARBONS IN OILFIELD WATER 被引量:1
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作者 赵红静 孙玮琳 +2 位作者 何保田 梅博文 张敏 《Chinese Journal Of Geochemistry》 EI CAS 2006年第1期85-89,共5页
A large number of oilfield water samples were analyzed in this work. Research on the relationship between the concentrations and distribution of dissolved hydrocarbons suggested that the contents and composition of di... A large number of oilfield water samples were analyzed in this work. Research on the relationship between the concentrations and distribution of dissolved hydrocarbons suggested that the contents and composition of dissolved hydrocarbons varied with the hydrocarbon-generating potential of reservoirs. The concentrations of dissolved hydrocarbons were low in dry layers, water layers and gas-water layers, but high in gas reservoirs and oil reservoirs, especially in gas reservoirs with condensed oil. Series of carbon-number alkanes were usually absent in oilfield water from dry layers, water layers and gas-water layers but abundant in oilfield water from oil-water reservoirs, gas reservoirs and oil reservoirs, whose carbon numbers varied most widely in oil reservoirs and least in gas reservoirs. A preliminary evaluation model for reservoir hydrocarbon-generating potential was established based on the characteristics of dissolved hydrocarbons in oilfield water to assist hydrocarbon exploration. 展开更多
关键词 油田 碳氢化合物 地质勘探 塔里木盆地 地质构造
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Geological characteristics and shale gas distribution of carboniferous mudstones in the Tarim Basin,China
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作者 Luofu Liu Jinqi Qiao +2 位作者 Baojian Shen Xinyi Lu Yueshu Yang 《Acta Geochimica》 EI CAS CSCD 2017年第2期260-275,共16页
Extant research on Paleozoic mudstone is well developed in the Tarim Basin, while the research on Carboniferous mudstone is relatively weak. Through systematic study of lithology, geochemical characteristics,reservoir... Extant research on Paleozoic mudstone is well developed in the Tarim Basin, while the research on Carboniferous mudstone is relatively weak. Through systematic study of lithology, geochemical characteristics,reservoir characteristics and gas–bearing properties of Carboniferous mudstone in the Tarim Basin, this study aims to provide a geological basis for the Paleozoic shale gas exploration and development, favorable zone optimization, and resource potential evaluation in the Tarim Basin. The results show that the sedimentary environments of organic-rich mudstone in the study area were mainly basin facies and slope facies. Lithology is dominated by black carbonaceous mudstone, followed by calcareous mudstone, siliceous mudstone, and siliceous rocks. Mudstone is mainly developed in the Kalashayi Formation,which is located in the Bachu and Markit slope belt, with the cumulative thickness of 30–200 m. The organic carbon content is commonly more than 0.4%, and the organic matter types are type II and type III. Thermal evolution degree is widely distributed from a low mature to over mature stage, and different tectonic units have a greater difference. The contents of quartz plus feldspar are between 12% and 82.5%, with an average of 45.8%. Thecontent distribution of clay mineral is from 12% to 57%,with an average of 38.2%. Carbonate minerals(mainly siderite) content is below 50%. The brittle mineral content of the mudstone is approximately 65%, with a strong compressibility, and the mudstone has the material basis of forming crack and natural fracture. Microscopic pores in micro–nanometer level are well developed in the mudstone, including micro bedding joint, microcrack,interbedded pores of clay mineral, nanoscale intragranular or edge pores in the massive organic matter, bioclastic micropores, and mineral dissolution pores, etc. According to the standards provided by the Ministry of Land and Resources in China, the Kalashayi Formation in Bamai Area is a favorable area for shale gas development. 展开更多
关键词 hydrocarbon generation potential Reservoir characteristics Shale gas MUDSTonE CARBonIFEROUS Tarim Basin
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准噶尔盆地东道海子凹陷二叠系平地泉组烃源岩特征及热演化史模拟
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作者 杨海波 冯德浩 +5 位作者 杨小艺 郭文建 韩杨 苏加佳 杨皩 刘成林 《岩性油气藏》 CAS CSCD 北大核心 2024年第5期156-166,共11页
基于钻井、录井、测井及烃源岩分析测试等资料,对准噶尔盆地东道海子凹陷二叠系平地泉组烃源岩的生烃潜力和热演化史进行了系统研究。研究结果表明:(1)准噶尔盆地东道海子凹陷二叠系平地泉组烃源岩主要为深灰色、灰黑色泥岩,颜色深且厚... 基于钻井、录井、测井及烃源岩分析测试等资料,对准噶尔盆地东道海子凹陷二叠系平地泉组烃源岩的生烃潜力和热演化史进行了系统研究。研究结果表明:(1)准噶尔盆地东道海子凹陷二叠系平地泉组烃源岩主要为深灰色、灰黑色泥岩,颜色深且厚度普遍较大,自东北部斜坡区向凹陷中部厚度逐渐增大,并向西部莫索湾凸起逐渐减小,最大泥岩厚度可达536 m。(2)研究区平地泉组烃源岩有机质丰度综合评价为中等—极好,纵向上以平一段有机质丰度最高,平面上以凹陷东北部滴南7井区和滴南19井区最高;平地泉组有机质类型主要为Ⅱ_(2)—Ⅲ型,少部分为Ⅱ_(1)型,纵向上以平二段有机质类型最好,平面上凹陷区烃源岩有机质类型主要为Ⅱ_(1)—Ⅱ_(2)型。(3)热演化史模拟结果显示,凹陷区和斜坡区烃源岩分别在晚三叠世和晚侏罗世达到生烃高峰,现今分别处于高成熟阶段和成熟阶段。(4)研究区发育“下生上储”和“自生自储”2类油气藏,其中平地泉组烃源岩与上乌尔禾组储集层形成“下生上储”油气藏,平二段和平一段的优质烃源岩与湖盆边缘的小型扇三角洲沉积在平地泉组内部形成“自生自储”油气藏,二者油气勘探潜力均较大。 展开更多
关键词 烃源岩 高有机质丰度 生烃潜力 热演化史模拟 下生上储 自生自储 平地泉组 二叠系 东道海子凹陷 准噶尔盆地
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杭锦旗地区二叠系储层油气成藏期次及流体势特征
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作者 李晓光 倪智勇 +4 位作者 宋到福 张旋 韩子敬 张威 安川 《吉林大学学报(地球科学版)》 CAS CSCD 北大核心 2024年第4期1110-1123,共14页
杭锦旗地区是鄂尔多斯盆地北部重要的含油气区,油气成藏期次及流体势研究有利于探究油气充注的世代以及流体势的分布特征,并进一步判定成藏期油气的运移方向。本文以什股壕区块和十里加汗区块5口井的二叠系下石盒子组盒一段储层砂岩为... 杭锦旗地区是鄂尔多斯盆地北部重要的含油气区,油气成藏期次及流体势研究有利于探究油气充注的世代以及流体势的分布特征,并进一步判定成藏期油气的运移方向。本文以什股壕区块和十里加汗区块5口井的二叠系下石盒子组盒一段储层砂岩为研究对象,基于流体包裹体分析厘定油气成藏期次,并结合流体势理论计算研究区关键成藏期的流体势并揭示油气的运移方向。研究结果显示:什股壕区块盒一段储层油气的成藏时间为132~102 Ma;十里加汗区块盒一段储层油气的成藏时间为132~101 Ma。杭锦旗北部的什股壕盒一段储层油气的流体势为18 128~22 872 J/kg;杭锦旗南部的十里加汗区块盒一段储层油气的流体势为22 975~27 153 J/kg。本文认为研究区二叠系盒一段储层油气成藏时间在早白垩世,十里加汗区块整体的流体势要高于什股壕区块,油气具备由南部向北部运移的趋势。 展开更多
关键词 流体包裹体 成藏期 流体势 油气运移 储层 杭锦旗地区 鄂尔多斯盆地
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珠江口盆地惠州凹陷惠东新区恩平组烃源岩生烃特征及成藏贡献 被引量:1
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作者 刘培 彭光荣 +5 位作者 熊万林 杨兴业 王宇辰 高翔 杜晓东 韩博 《中国海上油气》 CAS CSCD 北大核心 2024年第1期49-60,共12页
珠江口盆地惠州凹陷惠东新区恩平组厚度达3000 m,沉积特征整体表现为陆相浅水广盆环境,恩平组烃源岩生烃特征和成烃规模一直是困扰研究区勘探的基础问题之一。为厘清上述两个关键问题,以构造学、沉积学以及有机地球化学相结合的研究思... 珠江口盆地惠州凹陷惠东新区恩平组厚度达3000 m,沉积特征整体表现为陆相浅水广盆环境,恩平组烃源岩生烃特征和成烃规模一直是困扰研究区勘探的基础问题之一。为厘清上述两个关键问题,以构造学、沉积学以及有机地球化学相结合的研究思路为指导,在化验分析数据基础之上,重新认识本地区恩平组烃源岩特征、生烃潜力及主要成藏贡献区。研究表明:惠东地区恩平组主体发育三角洲—浅湖相沉积,烃源岩包括煤、碳质泥岩和暗色泥岩;暗色泥岩有机质丰度中等—好,有机质类型为II型,具有早期生油,晚期持续生气的特征;盆地模拟计算原油地质资源量近3×108t,天然气资源量近500×108m3,资源潜力较大;油气源对比表明恩平组烃源岩来源的油气藏主要发育在惠东地区,惠东地区下一步最有利勘探方向为邻近烃源岩的深层恩平组圈闭以及“源-断-脊-圈”匹配较好的浅层珠江、珠海组圈闭。 展开更多
关键词 恩平组烃源岩 生烃特征 资源潜力 成藏贡献 惠东新区 珠江口盆地 惠州凹陷
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Tectonic Evolution and Hydrocarbon Potential in Northern Area of the South Yellow Sea 被引量:6
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作者 姚永坚 陈春峰 +3 位作者 冯志强 张拭颖 郝天珧 万荣胜 《Journal of Earth Science》 SCIE CAS CSCD 2010年第1期71-82,共12页
The northern area of the South Yellow Sea, located in the offshore region of China, resulted from the continental-continental collision orogeny during the Mesozoic and can be divided into four stages in terms of tecto... The northern area of the South Yellow Sea, located in the offshore region of China, resulted from the continental-continental collision orogeny during the Mesozoic and can be divided into four stages in terms of tectonic evolution: (1) pre-orogenic passive continental margin stage (Z-T2); (2) foreland basin stage corresponding with the late phase of the Sulu (苏鲁) orogeny (J3-K); (3) post-orogenic intracontinental rifted basin stage (K2t-E); and (4) regional subsidence and coverage stage (N-Q). Based on detailed investigation and study of the intracontinental rifted basin, hydrocar- bon source rocks of Late Cretaceous Taizhou (泰州) Formation distributed well in the basin, and four reservoir-cap combinations as well as numerous trap structures were found. As a result, the geological conditions would be excellent for reservoir formation in the basin, and the oil resource amount is estimated at about 20×10^8 t, which makes the basin a major target for hydrocarbon exploration in the South Yellow Sea. 展开更多
关键词 northern area of the South Yellow Sea tectonic evolution stage OROGENY source- reservoir-cap combination hydrocarbon exploration potential.
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四川盆地区域不整合特征及其对油气成藏的控制作用 被引量:5
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作者 杨威 魏国齐 +7 位作者 武赛军 谢武仁 金惠 曾富英 郝翠果 白壮壮 苏亦晴 黎荣 《石油勘探与开发》 SCIE EI CAS CSCD 北大核心 2023年第3期504-515,共12页
基于露头、地震和钻井等资料,对四川盆地主要区域不整合特征及其对油气成藏的作用进行系统研究。结果表明:(1)四川盆地主要发育6个区域地层不整合,由下至上分别是前震旦系与震旦系之间、震旦系与寒武系之间、前二叠系与二叠系之间、中... 基于露头、地震和钻井等资料,对四川盆地主要区域不整合特征及其对油气成藏的作用进行系统研究。结果表明:(1)四川盆地主要发育6个区域地层不整合,由下至上分别是前震旦系与震旦系之间、震旦系与寒武系之间、前二叠系与二叠系之间、中上二叠统之间、中上三叠统之间以及三叠系与侏罗系之间的不整合,已发现的21个常规大气田(包括致密气)中有16个的形成与区域性不整合有关。(2)区域性地层不整合对四川盆地大气田成藏有重要作用:一是通过风化壳岩溶作用改善不整合面之下储集体的孔渗条件,形成规模岩溶储集层;二是不整合面附近有利于形成良好源储盖组合,为大气田形成提供基础;三是产生地层尖灭和高低不平的古地貌,形成大面积地层圈闭和岩性圈闭群;四是为油气侧向运移提供优势通道;五是有利于油气规模聚集。(3)与区域性不整合相关的领域是四川盆地大气田勘探的重点,前震旦系具备形成大气田的烃源岩、储集层及其良好的配置条件,具有较大勘探潜力,有望成为重要战略接替领域。 展开更多
关键词 不整合 大气田 四川盆地 岩溶储集层 油气成藏 控制作用 勘探潜力
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基于动静态资料的多期叠置储层水驱效果评价
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作者 刘永福 李宁 +3 位作者 李洪 周静萍 黄时祯 鲁明宇 《油气井测试》 2023年第6期72-77,共6页
多期沉积储层会形成曲流河、辫状河、三角洲等不同砂体构型模式,不同砂体叠置关系及内部构型特征使水淹规律、水驱开发效果多解性强。精细立体开展水驱效果评价成为制约老油田剩余油有效挖潜的主要因素。在充分利用井间示踪剂资料、油... 多期沉积储层会形成曲流河、辫状河、三角洲等不同砂体构型模式,不同砂体叠置关系及内部构型特征使水淹规律、水驱开发效果多解性强。精细立体开展水驱效果评价成为制约老油田剩余油有效挖潜的主要因素。在充分利用井间示踪剂资料、油水井生产数据分析注采对应关系的基础上,结合区域井间砂体连通关系明确水驱优势方向,分析水驱连通层位,从见效时间、平面、纵向三个维度深入剖析水驱规律,基于多资料开展水平井砂体构型刻画,明确剩余油富集层位,采取挖潜措施,使停产老井X10-H2井日产液9 t,日产油2.32 t。研究证明动静结合多维度综合评价薄互储层水驱效果措施有效率提升了10%。该方法为老油田“压舱石工程”提供了可靠的技术支撑和示范模板。 展开更多
关键词 多期叠置储层 井间示踪剂 水驱效果评价 注采分析 挖潜措施 砂体构型 剩余油挖潜 地质综合研究
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论基岩油气藏的勘探前景 被引量:75
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作者 马龙 刘全新 +3 位作者 张景廉 卫平生 陈启林 张虎权 《天然气工业》 EI CAS CSCD 北大核心 2006年第1期8-11,共4页
为了满足经济增长的需要,实现油气勘探新的突破,文章讨论了地幔柱与油气成矿作用关系,发现全球(如墨西哥湾、古巴、委内瑞拉、利比亚、西伯利亚和中国渤海湾、四川盆地、塔里木盆地)大量喷溢的玄武岩与油气关系密切;分析了越南大陆架白... 为了满足经济增长的需要,实现油气勘探新的突破,文章讨论了地幔柱与油气成矿作用关系,发现全球(如墨西哥湾、古巴、委内瑞拉、利比亚、西伯利亚和中国渤海湾、四川盆地、塔里木盆地)大量喷溢的玄武岩与油气关系密切;分析了越南大陆架白虎油田(储集于花岗岩及风化壳)、中国松辽盆地徐家围子兴城气田(储集于火山岩)的无机成因情况;同时对中国基岩油气藏的勘探靶区作了简要讨论,认为花岗岩及其风化壳类型的基岩油气藏将是未来勘探的重点,并讨论了基岩油气藏勘探的技术难点及解决方案;文章最后认为油气无机成因创新模式的提出将引发油气勘探的重大突破。 展开更多
关键词 基岩 油气藏 地幔柱 无机成因 勘探方针 白虎油田 松辽盆地
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陆相断陷盆地相-势耦合控藏作用及其基本模式 被引量:68
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作者 庞雄奇 李丕龙 +4 位作者 张善文 陈冬霞 宋国奇 王永诗 张俊 《石油与天然气地质》 EI CAS CSCD 北大核心 2007年第5期641-652,663,共13页
陆相断陷盆地油气运移、富集具有"断坡控砂、复式输导、相势控藏"的基本特征。文中以渤海湾盆地东营凹陷为例,详细阐述了"相""势"控藏特征和"优相-低势耦合控藏"的基本模式。研究表明,"相... 陆相断陷盆地油气运移、富集具有"断坡控砂、复式输导、相势控藏"的基本特征。文中以渤海湾盆地东营凹陷为例,详细阐述了"相""势"控藏特征和"优相-低势耦合控藏"的基本模式。研究表明,"相"控油气作用可分4个层次,即构造相控油气作用、沉积相控油气作用、岩相控油气作用和岩石物理相控油气作用,它们反映了从宏观到微观的油气分布规律和富集机制。"相"控油气作用的基本模式为"高孔-优相控藏"。"势"控油气作用可分为4种类型,即位能控油气作用、压能控油气作用、界面能控油气作用和动能控油气作用。不同类型势能控制着不同类型油气藏的形成和富集。"势"控油气作用的基本模式为"低势控藏"。优相-低势耦合作用控制了东营凹陷90%以上的油气藏分布,决定了不同类型的油气藏在不同埋深条件下的分布及势能差异,解释了主要目的层有效储层临界孔隙度随埋深增大而变小的规律性,阐明了各类圈闭内部势能较外部势能低50%以上才能开始聚集油气的机制。应用"近源-优相-低势"控藏模式可以对陆相断陷盆地潜在隐蔽油气藏进行分布预测。 展开更多
关键词 流体势 相势控藏 隐蔽油气藏 陆相断陷盆地 济阳坳陷
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膏盐岩层系在海相油气成藏中的潜在作用 被引量:29
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作者 刘文汇 赵恒 +7 位作者 刘全有 周冰 张殿伟 王杰 卢龙飞 罗厚勇 孟庆强 吴小奇 《石油学报》 EI CAS CSCD 北大核心 2016年第12期1451-1462,共12页
膏盐岩层系作为理想的盖层被广泛关注,随着勘探和研究的不断深入,逐步发现膏盐岩层系在油气运移、储存、圈闭等过程中都发挥着重要作用。近年来,中国海相油气勘探在鄂尔多斯盆地东部、塔里木盆地中部、四川盆地西部等地区的含膏盐岩层... 膏盐岩层系作为理想的盖层被广泛关注,随着勘探和研究的不断深入,逐步发现膏盐岩层系在油气运移、储存、圈闭等过程中都发挥着重要作用。近年来,中国海相油气勘探在鄂尔多斯盆地东部、塔里木盆地中部、四川盆地西部等地区的含膏盐岩层系中不断取得突破,从而引发了高演化、低丰度膏盐岩层系成为油气来源这一问题的思考。在概要梳理膏盐岩层系在储-盖方面研究进展的同时,主要从烃源岩发育环境及成烃机理方面对膏盐岩层系烃源岩的发育和生烃潜力进行探究,认为膏盐岩层系包括中国高演化低有机碳含量的膏盐岩层系可以作为良好的烃源岩,这突破了低有机碳含量膏盐岩层系无法作为有效烃源的传统观点。高演化低有机碳含量膏盐岩层系中被低估的生烃物质、优质的生烃物质在地质历史中大量生烃转化和以有机酸盐形式存在的生烃物质是认识其生烃机理的关键。 展开更多
关键词 膏盐岩层系 生烃潜力 成烃碳 生烃机理 烃源岩 储层 盖层
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花岗岩和火山岩油气藏的形成及其勘探潜力 被引量:50
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作者 潘建国 郝芳 +2 位作者 张虎权 卫平生 张景廉 《天然气地球科学》 EI CAS CSCD 2007年第3期380-385,共6页
随着花岗岩油气藏和火山岩油气藏不断被发现,其油气来源和成藏模式也备受关注,近代研究表明,花岗岩和火山岩中有大量的烃可成为油气藏的物质基础。通过固体力学、流体力学的研究否定了油气倒灌成藏的模式,认为油和气只能是向上垂直运移... 随着花岗岩油气藏和火山岩油气藏不断被发现,其油气来源和成藏模式也备受关注,近代研究表明,花岗岩和火山岩中有大量的烃可成为油气藏的物质基础。通过固体力学、流体力学的研究否定了油气倒灌成藏的模式,认为油和气只能是向上垂直运移或侧向运移。通过研究花岗岩和火山岩油气藏的形成模式,指出大火成岩省、地幔柱与油气的关系表明盆地中地壳的低速—高导层可能是油气的主要来源,而花岗岩、火山岩的风化壳是油气成藏的最佳储集层,断裂则是其最主要的运移通道,花岗岩和火山岩油气藏将是未来勘探的重要目标。 展开更多
关键词 花岗岩 火山岩 油气藏 油气倒灌 地幔柱 中地壳 勘探潜力
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