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A Quantitative Evaluation of Shale Gas Content in Different Occurrence States of the Longmaxi Formation: A New Insight from Well JY-A in the Fuling Shale Gas Field,Sichuan Basin 预览
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作者 TANG Ling SONG Yan +8 位作者 LI Qianwen PANG Xiongqi JIANG Zhenxue LI Zhuo TANG Xianglu YU Hailong SUN Yue FAN Shichao ZHU Lin 《地质学报:英文版》 SCIE CAS CSCD 2019年第2期400-419,共20页
Comprehensive quantitative evaluation of shale gas content and the controlling factors in different occurrence states is of great significance for accurately assessing gas-bearing capacity and providing effective well... Comprehensive quantitative evaluation of shale gas content and the controlling factors in different occurrence states is of great significance for accurately assessing gas-bearing capacity and providing effective well-production strategies. A total of 122 core samples from well JY-A in the Fuling shale gas field were studied to reveal the characteristics of S1 l shale,15 of which were selected to further predict the shale gas content in different occurrence states, which are dependent on geological factors in the thermal evolution process. Geological parameters were researched by a number of laboratory programs, and the factors influential in controlling shale gas content were extracted by both PCA and GRA methods and prediction models were confirmed by the BE method using SPSS software. Results reveal that the adsorbed gas content is mainly controlled by TOC, Ro, SSA, PD and pyrite content, and the free gas content is mainly controlled by S2, quartz content, gas saturation and formation pressure for S1 l in well JY-A. Three methods, including the on-site gas desorption method, the empirical formula method, and the multiple regression analysis method were used in combination to evaluate the shale gas capacity of well JY-A, all of which show that the overall shale gas content of well JY-A is in the range of 2.0–5.0 m3/t and that the free gas ratio is about 50%, lower than that of well JY-1. Cause analysis further confirms the tectonics and preservation conditions of S1 l in the geological processes, especially the influence of eastern boundary faults on well JY-A, as the fundamental reasons for the differences in shale gas enrichment in the Jiaoshiba area. 展开更多
关键词 SHALE GAS CONTENT ON-SITE GAS desorption multiple regression analysis controlling factors Longmaxi SHALES Fuling SHALE GAS field Jiaoshiba area
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“Exploring petroleum inside source kitchen”: Connotation and prospects of source rock oil and gas 预览
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作者 YANG Zhi ZOU Caineng 《石油勘探与开发:英文版》 2019年第1期181-193,共13页
Based on the transitional background of the global energy structure, exploration and development of unconventional oil and gas, and investigation of key basins, the unconventional oil and gas resources are divided int... Based on the transitional background of the global energy structure, exploration and development of unconventional oil and gas, and investigation of key basins, the unconventional oil and gas resources are divided into three types: source rock oil and gas, tight oil and gas, and retention and accumulated oil and gas. Source rock oil and gas resources are the global strategic supplies of oil and gas, the key resource components in the second 150-year life cycle of the future petroleum industry, and the primary targets for “exploring petroleum inside source kitchen”. The geological connotation of source rock oil and gas was proposed, and the models of source rock oil and gas generation, expulsion and accumulation were built, and five source rock oil and gas generation sections were identified, which may determine the actual resource potential under available technical conditions. The formation mechanism of the “sweet sections” was investigated, that is, shale oil is mainly accumulated in the shale section that is close to the oil generation section and has higher porosity and permeability, while the “sweet sections” of coal-bed methane(CBM) and shale gas have self-contained source and reservoir and they are absorbed in coal seams or retained in the organic-rich black shale section, so evaluation and selection of good 'sweet areas(sections)' is the key to “exploring petroleum inside source kitchen”. Source rock oil and gas resources have a great potential and will experience a substantial growth for over ten world-class large “coexistence basins” of conventional-unconventional oil and gas in the future following North America, and also will be the primary contributor to oil stable development and the growth point of natural gas production in China, with expected contribution of 15% and 30% to oil and gas, respectively, in 2030. Challenges in source rock oil and gas development should be paid more attention to, theoretical innovation is strongly recommended, and a development pilot zone can be est 展开更多
关键词 SOURCE rock OIL and GAS SHALE GAS SHALE OIL coal-bed methane SWEET section SWEET area SOURCE control theory man-made OIL and GAS reservoir UNCONVENTIONAL OIL and GAS revolution large“coexistence basins”of conventional-unconventional OIL and GAS
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Unconventional Natural Gas Accumulations in Stacked Deposits:A Discussion of Upper Paleozoic Coal-Bearing Strata in the East Margin of the Ordos Basin,China 预览
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作者 LI Yong YANG Jianghao +3 位作者 PAN Zhejun MENG Shangzhi WANG Kai NIU Xinlei 《地质学报:英文版》 SCIE CAS CSCD 2019年第1期111-129,共19页
The Upper Paleozoic(Carboniferous to Permian)succession in the east margin of the Ordos Basin in the North China Craton has a potential to contain significant hydrocarbon resources,though attention have been mainly at... The Upper Paleozoic(Carboniferous to Permian)succession in the east margin of the Ordos Basin in the North China Craton has a potential to contain significant hydrocarbon resources,though attention have been mainly attracted for its successful development of coalbed methane(CBM).To improve the previous resource estimates and evaluate the hydrocarbon play possibilities,this study incorporated new discoveries of hydrocarbon units and their stratigraphic relation with source rocks,hydrocarbon migration and trapping configurations.Continuous hydrocarbon accumulation units were identified within the Upper Paleozoic,including the Taiyuan,Shanxi and Xiashihezi formations with great tight gas potential,and the Taiyuan and Shanxi formations also containing shale gas and CBM.Different strata combinations are identified with coal deposition and favour for continuous gas accumulations,including the tidal flat,deltaic and fluvial systems distributed in most of the study areas.Methane was not only generated from the thick coal seams in the Taiyuan and Shanxi formations,but also from shale and dark mudstones.The coal,shale and tight sandstones are proved of remarkable gas content and hydrocarbon indications,and the gas saturation of tight sandstones decreases upward.The stacked deposit combinations vary isochronally in different areas,while the coal seams were developed stably showing good gas sources.Two key stages control the hydrocarbon enrichment,the continuous subsidence from coal forming to Late Triassic and the anomalous paleo-geothermal event happened in Early Cretaceous,as indicated by the fluid inclusions evidence.Extensive areas show good hydrocarbon development potential presently,and more works should be focused on the evaluation and selection of good reservoir combinations. 展开更多
关键词 coal measure GAS transitional SHALE GAS TIGHT sand GAS three gases eastern ORDOS Basin
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Technical and Economic Aspects and Experience from 6 Years of Operating the Technology Using the Waste Heat from the Exhaust Gases of Heat Sources and 3 Years of Operating a Heating Plant in an Autonomous, Island Regime 预览
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作者 Imrich Discantiny 《地质资源与工程:英文版》 2019年第2期39-44,共6页
This article is focused on technical and economic evaluation of more than 6-years experiences of operating the Waste Heat Recovery technology—the manner and system of flue gas processing generated in the combustion p... This article is focused on technical and economic evaluation of more than 6-years experiences of operating the Waste Heat Recovery technology—the manner and system of flue gas processing generated in the combustion process in heat & power plants, cogeneration units, etc., which burn the gaseous fuel, primarily natural gas, or methane, biogas, geothermal gas, or other gaseous mixtures containing hydrogen. The solution proposes a more effective and non-traditional use of gaseous fuel for heating, the flue gases of which are processed in order to extract additional utilisable heat, with potential elimination of CO2 from them. Deploying of the heating plant in an island regime (OFF-GRID) enables definition of the benefits brought by the 3 years of operational experience and presents visions for the future offering the possibility to utilise the support energy services at the municipal as well as regional level. 展开更多
关键词 NATURAL GAS (NG) liquefied NATURAL GAS (LNG) liquefied propane GAS (LPG) combined HEAT & power (CHP) renewable energy sources (RES) waste HEAT recovery (WHR) international GAS union (IGU)
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Determination of the maximum allowable gas pressure for an underground gas storage salt cavern--A case study of Jintan,China 预览
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作者 Tongtao Wang Jianjun Li +3 位作者 Gang Jing Qingqing Zhang Chunhe Yang J.J.K.Daemen 《岩石力学与岩土工程学报:英文版》 CSCD 2019年第2期251-262,共12页
Increasing the allowable gas pressure of underground gas storage(UGS)is one of the most effective methods to increase its working gas capacity.In this context,hydraulic fracturing tests are implemented on the target f... Increasing the allowable gas pressure of underground gas storage(UGS)is one of the most effective methods to increase its working gas capacity.In this context,hydraulic fracturing tests are implemented on the target formation for the UGS construction of Jintan salt caverns,China,in order to obtain the minimum principal in situ stress and the fracture breakdown pressure.Based on the test results,the maximum allowable gas pressure of the Jintan UGS salt cavern is calibrated.To determine the maximum allowable gas pressure,KING-1 and KING-2 caverns are used as examples.A three-dimensional(3D)geomechanical model is established based on the sonar data of the two caverns with respect to the features of the target formation.New criteria for evaluating gas penetration failure and gas seepage are proposed.Results show that the maximum allowable gas pressure of the Jintan UGS salt cavern can be increased from 17 MPa to 18 MPa(i.e.a gradient of about 18 k Pa/m at the casing shoe depth).Based on numerical results,a field test with increasing maximum gas pressure to 18 MPa has been carried out in KING-1 cavern.Microseismic monitoring has been conducted during the test to evaluate the safety of the rock mass around the cavern.Field monitoring data show that KING-1 cavern is safe globally when the maximum gas pressure is increased from 17 MPa to 18 MPa.This shows that the geomechanical model and criteria proposed in this context for evaluating the maximum allowable gas pressure are reliable. 展开更多
关键词 Underground GAS storage(UGS)salt CAVERN In SITU stress testing MAXIMUM GAS pressure GAS PENETRATION failure Microseismic monitoring
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Breakdown characteristics of CF3I/N2/CO2 mixture in power frequency and lightning impulse voltages
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作者 林启明 赵谡 +1 位作者 肖登明 周柏杰 《等离子体科学与技术:英文版》 SCIE EI CAS CSCD 2019年第1期36-43,共8页
Trifluoroiodomethane(CF3I) and its mixtures are believed to be prospective alternatives to sulfur hexafluoride(SF6), which has been included as a greenhouse gas. In this paper, the breakdown properties of a CF3I/N2/CO... Trifluoroiodomethane(CF3I) and its mixtures are believed to be prospective alternatives to sulfur hexafluoride(SF6), which has been included as a greenhouse gas. In this paper, the breakdown properties of a CF3I/N2/CO2 mixture with the volume fraction of CF3I fixed at 10% are investigated under power frequency and lightning impulse voltages. The experimental result shows that N2 possesses higher power frequency and negative lightning impulse breakdown voltages than CO2, but the power frequency and more negative lightning impulse breakdown voltages of the CF3I/N2/CO2 mixture do not increase with the content of N2. For the purpose of explaining this abnormal phenomenon, the ionization energies and excitation energies of CF3I,N2and CO2 are calculated. The computation results indicate that the ionization energy of CF3I is lower than the first excitation energy of N2, but higher than the lowest excitation energy of CO2,which means that CF3I molecules are easily ionized by metastable N2 molecules. The first excitation energy of N2 is too high, which hinders its application as the buffer gas of CF3I. 展开更多
关键词 GAS DISCHARGE CF3I GAS MIXTURES Penning EFFECT BUFFER GAS
天然气加气站隐患分析及管理要素研究 预览
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作者 陈虹燕 徐昕 王智立 《化工管理》 2019年第10期141-143,共3页
由于天然气具有易燃易爆的特性,在储运、调压、过滤、加注等过程中危险性很大,一旦发生事故将造成巨大损失,因此天然气加气站的安全管理工作尤为重要。文章就天然气安全管理的要素进行分类研究,并在此基础上为天然气加气站提供了科学、... 由于天然气具有易燃易爆的特性,在储运、调压、过滤、加注等过程中危险性很大,一旦发生事故将造成巨大损失,因此天然气加气站的安全管理工作尤为重要。文章就天然气安全管理的要素进行分类研究,并在此基础上为天然气加气站提供了科学、合理的安全管理意见。 展开更多
关键词 天然气 加气站 安全管理 管理要素
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A Volumetric Model for Evaluating Tight Sandstone Gas Reserves in the Permian Sulige Gas Field,Ordos Basin,Central China 预览
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作者 CUI Mingming FAN Aiping +3 位作者 WANG Zongxiu GAO Wanli LI Jinbu LI Yijun 《地质学报:英文版》 SCIE CAS CSCD 2019年第2期386-399,共14页
To accurately measure and evaluate reserves is critical for ensuring successful production of unconventional oil and gas. This work proposes a volumetric model to evaluate the tight sandstone gas reserves of the Permi... To accurately measure and evaluate reserves is critical for ensuring successful production of unconventional oil and gas. This work proposes a volumetric model to evaluate the tight sandstone gas reserves of the Permian Sulige gas field in the Ordos Basin. The reserves can be determined by four major parameters of reservoir cutoffs, net pay, gas-bearing area and compression factor Z, which are controlled by reservoir characteristics and sedimentation. Well logging, seismic analysis, core analysis and gas testing, as well as thin section identification and SEM analysis were used to analyze the pore evolution and pore-throat structure. The porosity and permeability cutoffs are determined by distribution function curve,empirical statistics and intersection plot. Net pay and gas-bearing area are determined based on the cutoffs, gas testing and sand body distribution, and the compression factor Z is obtained by gas component. The results demonstrate that the reservoir in the Sulige gas field is characterized by ultralow porosity and permeability, and the cutoffs of porosity and permeability are 5% and 0.15×10–3 μm2, respectively. The net pay and gas-bearing area are mainly affected by the sedimentary facies, sand body types and distribution. The gas component is dominated by methane which accounts for more than 90%, and the compression factor Z of H8(P2h8) and S1(P1s1) are 0.98 and 0.985, respectively. The distributary channels stacked and overlapped, forming a wide and thick sand body with good developed intergranular pores and intercrystalline pores. The upper part of channel sand with good porosity and permeability can be sweet spot for gas exploration. The complete set of calculation systems proposed for tight gas reserve calculation has proved to be effective based on application and feedback. This model provides a new concept and consideration for reserve prediction and calculation in other areas. 展开更多
关键词 tight sandstone reservoir volumetric GAS reserve PERMIAN SULIGE GAS field ORDOS Basin
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极薄煤层掘进工作面瓦斯富积区瓦斯治理技术探讨 预览
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作者 张清 《煤矿现代化》 2019年第2期81-82,85共3页
韦家沟煤矿目前已进入-320m深部开采水平,掘进工作面半煤巷施工过程中时遇瓦斯超限情况发生,特别是-320m水平北一采区南翼,半煤岩巷放炮瓦斯涌出量大,严重威胁矿井安全生产,经浅眼松动爆破技术及改变掏槽眼布置的应用,对减少瓦斯瞬间涌... 韦家沟煤矿目前已进入-320m深部开采水平,掘进工作面半煤巷施工过程中时遇瓦斯超限情况发生,特别是-320m水平北一采区南翼,半煤岩巷放炮瓦斯涌出量大,严重威胁矿井安全生产,经浅眼松动爆破技术及改变掏槽眼布置的应用,对减少瓦斯瞬间涌出量、控制瓦斯超限情况起到了很好的效果。 展开更多
关键词 瓦斯 松动爆破 瓦斯治理 超限 效果
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Study on the Critical Production Calculation Method of the Water-Flooding Reservoir with Gas Cap 预览
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作者 Cunliang Chen Ming Yang +2 位作者 Xue Liu Fei Shi Meijia Liu 《长江油气(英文版)》 2019年第1期31-42,共12页
The aim of this paper is to solve the problems that the existing method of critical production of gas cap reservoir is only suitable for single-phase flow, and the method of critical production of gas cap reservoir un... The aim of this paper is to solve the problems that the existing method of critical production of gas cap reservoir is only suitable for single-phase flow, and the method of critical production of gas cap reservoir under water-flooding is still blank. In this paper, the relationships between dynamic and static equilibrium, plane radial flow theory, oil-water infiltration method and three-dimensional seepage field decomposition theory, were applied to study a calculation method for critical production of directional wells and horizontal wells. Furthermore, the effects of different factors on critical output were studied, such as horizontal permeability, ratio of horizontal permeability to vertical permeability, length of horizontal section, effective thickness, viscosity of crude oil and water content etc. Results show that the critical production increases with the increment of the horizontal permeability, the ratio of the vertical permeability to the horizontal permeability, the reservoir thickness and the horizontal well length;when the viscosity of crude oil is small, the critical production decreases first and then increases with the increase of water content;when the viscosity of crude oil is high, the critical production increases continuously with the increase of water content. This study could provide theoretical and technical guidance for changing of the working system of oil wells. It can avoid gas channeling and improve the development effect. 展开更多
关键词 Water-Flooding GAS Cap OILFIELD Horizontal Well CRITICAL PRODUCTION GAS PEAK CONING Water Cut
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“十三五”全国油气资源勘查开采规划执行情况中期评估与展望 预览
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作者 郭威 潘继平 《天然气工业》 EI CAS CSCD 北大核心 2019年第4期111-117,共7页
目前"十三五"进程过半,开展油气资源勘探开发规划中期评估,及时发现趋势性、风险性问题,提出加强和改善意见建议,有助于增强国内油气资源的供给能力。为此,基于我国《石油发展"十三五"规划》《天然气发展"十三... 目前"十三五"进程过半,开展油气资源勘探开发规划中期评估,及时发现趋势性、风险性问题,提出加强和改善意见建议,有助于增强国内油气资源的供给能力。为此,基于我国《石油发展"十三五"规划》《天然气发展"十三五"规划》等专项规划,结合国内外经济形势,评估了上述规划实施以来的油气储量与产量目标完成情况、重点任务实施进展情况,探讨了目前面临的主要问题,并提出了增强规划实施的意见和建议。评估结果表明:①截至2018年底,我国石油、天然气、煤层气和页岩气新增探明地质储量基本达到规划预期,相继发现鄂尔多斯盆地南梁、环江等多个亿吨级油田,鄂尔多斯盆地苏里格气田和四川盆地安岳气田等多个千亿立方米级大气田;②石油产量连续3年下降,天然气产量稳步增加,呈现出"油降气增"的态势,油气可持续发展形势较为严峻。结论认为:①规划执行情况总体良好,"十三五"后期需要切实采取有效措施,全力推进油气储量、产量持续增长,保障国家能源供应安全;②深层、深水盆地油气将成为未来增储上产的重点区域,是我国油气资源勘探开发的重要战略接替区;③非常规油气增储上产比重将逐步增大,致密油气、页岩气、煤层气和天然气水合物等非常规油气资源成为增储的重要组成部分;④我国将进入天然气储量、产量快速增长阶段。 展开更多
关键词 中国 石油 天然气 勘探开发规划 “十三五” 中期评估 储量 产量 非常规油气
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An experimental study of the synergistic effects of BMIM-BF4,BMIM-DCA and TEACI aqueous solutions on methane hydrate formation
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作者 Ali Rasoolzadeh Jafar Javanmardi Amir H. Mohammadi 《石油科学:英文版》 SCIE CAS CSCD 2019年第2期409-416,共8页
In this work, the effects of three ionic liquids(ILs), namely, 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium dicyanamide and tetraethyl-ammonium chloride, on methane hydrate formation and ... In this work, the effects of three ionic liquids(ILs), namely, 1-butyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium dicyanamide and tetraethyl-ammonium chloride, on methane hydrate formation and dissociation kinetic parameters were studied. The kinetic parameters including the initial rate of hydrate formation, hydrate stability at atmospheric pressure and hydrate storage capacity were evaluated. The experimental measurements were performed in an initial pressure range of 3.5-7.1 MPa. It was found that both of ILs with imidazolium-based cation increase the initial methane hydrate formation rate while the IL with ammonium-based cation leads to a decrease in the initial methane hydrate formation rate. It was also interpreted from the results that all of the three studied ILs decrease methane hydrate stability at atmospheric pressure and increase methane hydrate storage capacity. Finally, both of ILs with imidazolium-based cations were found to have higher impacts on decreasing hydrate stability at atmospheric pressure and increasing the methane hydrate storage capacity than the applied IL with ammonium-based cation. 展开更多
关键词 Storage capacity GAS HYDRATE Initial rate IONIC liquids Natural GAS
埃索美拉唑、莫沙必利及镁加铝三联疗法对反流性食管炎患者的疗效及GAS、MOT水平的影响 预览
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作者 杨勤 《中国医学创新》 CAS 2019年第10期123-126,共4页
目的:探讨埃索美拉唑、莫沙必利以及镁加铝三联疗法对反流性食管炎患者的疗效以及对血清胃泌素(GAS)、血浆胃动素(MOT)水平的影响。方法:选取2015年7月-2017年7月本院收治的96例反流性食管炎患者作为研究对象,随机分为对照组和观察组,每... 目的:探讨埃索美拉唑、莫沙必利以及镁加铝三联疗法对反流性食管炎患者的疗效以及对血清胃泌素(GAS)、血浆胃动素(MOT)水平的影响。方法:选取2015年7月-2017年7月本院收治的96例反流性食管炎患者作为研究对象,随机分为对照组和观察组,每组48例。对照组进行埃索美拉唑与莫沙必利联合治疗,观察组则进行埃索美拉唑、莫沙必利以及镁加铝三联疗法治疗,比较两组患者的治疗效果。结果:观察组总有效率为100%明显高于对照组的85.42%,两组比较差异有统计学意义(P<0.05)。两组患者均有头晕、食欲减退、腹泻、乏力等不良反应,但观察组不良反应的总发生率为6.25%明显低于对照组的22.92%,两组比较差异有统计学意义(P<0.05)。观察组治疗后的GAS、MOT水平均显著高于对照组,两组比较差异均有统计学意义(P<0.05)。结论:埃索美拉唑、莫沙必利和镁加铝三联治疗反流性食管炎患者的效果更好,可以显著改善患者的临床症状,提高GAS、MOT水平,降低不良反应发生率,安全性好,可在临床上推广应用。 展开更多
关键词 埃索拉美唑 莫沙必利 镁加铝 反流性食管炎 GAS MOT
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探讨瓦斯防治技术与管理措施 预览
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作者 李银生 《能源与节能》 2019年第1期98-99,183共3页
瓦斯是影响煤矿企业安全生产的一个重要因素,瓦斯事故频发影响煤炭行业的整体发展。简单介绍了引发瓦斯事故的原因,提出了保持矿井良好通风,合理分配井下风量,能有效提高对瓦斯事故的防范能力。同时,提高安全防范意识,采取严格的管理措... 瓦斯是影响煤矿企业安全生产的一个重要因素,瓦斯事故频发影响煤炭行业的整体发展。简单介绍了引发瓦斯事故的原因,提出了保持矿井良好通风,合理分配井下风量,能有效提高对瓦斯事故的防范能力。同时,提高安全防范意识,采取严格的管理措施,引进先进的防治技术和相关设备,有利于消除瓦斯安全隐患,保证煤井生产安全。 展开更多
关键词 瓦斯 防治技术 管理措施 瓦斯涌出量
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Formation conditions and accumulation characteristics of Bozhong 19-6 large condensate gas field in offshore Bohai Bay Basin 预览
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作者 XU Changgui YU Haibo +1 位作者 WANG Jun LIU Xiaojian 《石油勘探与开发:英文版》 2019年第1期27-40,共14页
Based on the study of natural gas resource, low buried hill trap formation mechanism, high quality reservoir control factors and natural gas preservation conditions, the formation conditions and reservoir accumulation... Based on the study of natural gas resource, low buried hill trap formation mechanism, high quality reservoir control factors and natural gas preservation conditions, the formation conditions and reservoir accumulation characteristics of Bozhong 19-6 large condensate gas field were summarized. Large gas generation potential of multiple sets of thick humic-sapropelic source rocks in high maturity stage in Bozhong depression was the basis of large gas field formation. The multi-stage tectonic evolution since Indosinian period formed large-scale buried hill traps. The Tanlu fault activity formed multi-type reservoirs, and buried hill metamorphic rock of Archean and sand-conglomerate of Kongdian Formation were high-quality reservoirs. Thick overpressure lacustrine mudstone and weak neotectonic movement provided good preservation conditions. Bozhong 19-6 gas reservoir was a condensate gas reservoir with very high condensate oil content, and the gas origin was humic-sapropelic and kerogen-cracking gas, and the gas field had large gas thickness, high gas column characteristics and the accumulation process was first oil and then gas. The buried hill reservoir was a massive reservoir and the Kongdian reservoir was a stratified reservoir. The gas field had multi-channel hydrocarbon intense charge from overpressure source rocks, atmospheric-weak overpressure reservoir favorable for accumulation, thick overpressure mudstone caprock favorable for preservation, and natural gas ultra-late rapid accumulation model. 展开更多
关键词 OFFSHORE Bohai Bay Basin Bozhong 19-6 GAS field CONDENSATE GAS low buried HILL METAMORPHIC rock reservoir accumulation characteristics ARCHEAN
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Achievements and future work of oil and gas production engineering of CNPC 预览
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作者 LEI Qun WENG Dingwei +4 位作者 LUO Jianhui ZHANG Jianjun LI Yiliang WANG Xin GUAN Baoshan 《石油勘探与开发:英文版》 2019年第1期145-152,共8页
This paper summarizes the latest achievements and technological progress in oil and gas production engineering of China National Petroleum Corporation(CNPC) and discusses the main four challenges faced: developing low... This paper summarizes the latest achievements and technological progress in oil and gas production engineering of China National Petroleum Corporation(CNPC) and discusses the main four challenges faced: developing low quality resource at low oil price;keeping stable production of mature oilfields when well oil production drops year by year;low systematic efficiency, high cost, prominent environmental protection issue and short of technological strategy for high water cut ratio and high oil recovery ratio oilfields;and lacking of high level horizontal well drilling and completion technology to develop unconventional and deep reservoirs. Three technological development directions to address these challenges are put forward: developing fracture controlling stimulation and well factory to produce low quality resource economically, developing re-fracturing technology for old wells in mature oilfields, promoting the fourth generation separate layer water injection technology to stabilize the production of mature oilfields;innovating new technologies of water flooding with nano-material, injecting and producing through one well. 展开更多
关键词 China OIL and GAS PRODUCTION OIL and GAS PRODUCTION engineering TECHNOLOGICAL achievement TECHNOLOGICAL challenge FUTURE direction advanced technology
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煤与瓦斯共采及瓦斯综合利用分析 预览
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作者 李春刚 《煤矿现代化》 2019年第1期8-10,共3页
黄岩汇煤矿通过尾巷、高抽巷瓦斯治理工作的研究分析,确定利用高抽巷综合治理瓦斯方式,该方式即有效治理瓦斯,保障矿井安全生产,又通过瓦斯发电机、瓦斯锅炉等设备综合利用瓦斯。该研究对矿井瓦斯治理和综合利用有一定的参考意义。
关键词 瓦斯 顶板高抽巷 抽采 瓦斯综合利用
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Nanopore structure comparison between shale oil and shale gas: examples from the Bakken and Longmaxi Formations
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作者 Kouqi Liu Liang Wang +3 位作者 Mehdi Ostadhassan Jie Zou Bailey Bubach Reza Rezaee 《石油科学:英文版》 SCIE CAS CSCD 2019年第1期77-93,共17页
In order to analyze and compare the differences in pore structures between shale gas and shale oil formations, a few samples from the Longmaxi and Bakken Formations were collected and studied using X-ray diffraction, ... In order to analyze and compare the differences in pore structures between shale gas and shale oil formations, a few samples from the Longmaxi and Bakken Formations were collected and studied using X-ray diffraction, LECO TOC measurement, gas adsorption and field-emission scanning electron microscope. The results show that samples from the Bakken Formation have a higher TOC than those from the Longmaxi Formation. The Longmaxi Formation has higher micropore volume and larger micropore surface area and exhibited a smaller average distribution of microsize pores compared to the Bakken Formation. Both formations have similar meso-macropore volume. The Longmaxi Formation has a much larger meso-macropore surface area, which is corresponding to a smaller average meso-macropore size. CO2 adsorption data processing shows that the pore size of the majority of the micropores in the samples from the Longmaxi Formation is less than 1 nm, while the pore size of the most of the micropores in the samples from the Bakken Formation is larger than 1 nm. Both formations have the same number of pore clusters in the 2-20 nm range, but the Bakken Formation has two additional pore size groups with mean pore size diameters larger than 20 nm. Multifractal analysis of pore size distribution curves that was derived from gas adsorption indicates that the samples from the Longmaxi Formation have more significant micropore heterogeneity and less meso-macropore heterogeneity. Abundant micropores as well as mesomacropores exist in the organic matter in the Longmaxi Formation, while the organic matter of the Bakken Formation hosts mainly micropores. 展开更多
关键词 SHALE GAS SHALE oil - PORE structure GAS adsorption PORE family MULTIFRACTAL analysis
唐山矿西南区9煤层瓦斯地质控因研究
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作者 常永强 杨洪雨 《煤炭技术》 CAS 2019年第1期102-104,共3页
为了查明9煤层瓦斯涌出量偏高异常原因,对9煤层瓦斯涌出量预测并进行综合危险区划。结果表明,9煤层孔隙度、最大甲烷吸附量明显高于其他煤层,储层特征形成了瓦斯异常的基础;在研究区西部、中部及东部瓦斯涌出量随深度均呈增大趋势,9煤... 为了查明9煤层瓦斯涌出量偏高异常原因,对9煤层瓦斯涌出量预测并进行综合危险区划。结果表明,9煤层孔隙度、最大甲烷吸附量明显高于其他煤层,储层特征形成了瓦斯异常的基础;在研究区西部、中部及东部瓦斯涌出量随深度均呈增大趋势,9煤层瓦斯重点防治区域主要分布于研究区中部及两侧深部。 展开更多
关键词 瓦斯 地质因素 储层特征 瓦斯涌出量
油田伴生气在天然气外输管道中的应用 预览
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作者 杨国胜 《化工管理》 2019年第10期223-224,共2页
对于输送含H2S等酸性气体的天然气外输管道,若有水存在,会造成管道内壁腐蚀,同时有可能形成天然气水合物,造成管道堵塞,影响管道安全运行。因此,管道投运前,必须进行干燥。文章结合伊朗北阿项目的实际情况,介绍了采取油田伴生气进行管... 对于输送含H2S等酸性气体的天然气外输管道,若有水存在,会造成管道内壁腐蚀,同时有可能形成天然气水合物,造成管道堵塞,影响管道安全运行。因此,管道投运前,必须进行干燥。文章结合伊朗北阿项目的实际情况,介绍了采取油田伴生气进行管道干燥的应用。同时,通过梳理工艺流程,外输管道可以作为油田电站燃料气的应急'储罐',避免电站停机断电,影响油田平稳生产。 展开更多
关键词 天然气 外输管道 管道干燥 燃料气
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